Mizuki Uematsu, Kazuya Kato, Kota Watanabe, Tomoya Watanobe, Wataru Natsu: Cutting Tool Monitoring Technology Using Wireless Acoustic Emission Sensor, International Journal of Automation Technology, 18(6), https://doi.org/10.20965/ijat.2024.p0812, 2024.
Ye Chen, Dahai Mi, Wataru Natsu: A Method to Enhance the Depth?to?Diameter Ratio of Micro?Holes Drilled with EDM Using the Pressure Difference Created at the Hole Entrance, International Journal of Precision Engineering and Manufacturing, https://doi.org/10.1007/s12541-024-01152-y, 2024.
Qingrong Zhang, Hongping Luo, Wataru Natsu: Parameter Identification of Equivalent Circuit for Pulsed Electrochemical Machining Based on Experimentally Obtained Current Waveforms, International Journal of Precision Engineering and Manufacturing, https://doi.org/10.1007/s12541-024-01112-6, 2024.
Qingrong Zhang, Wataru Natsu, Hongping Luo: Realization of high-precision electrochemical machining by active use of hydrogen bubbles generated in non-machining area, Precision Engineering, 91, pp.59-76, https:// doi.org/10.1016/j.precisioneng.2024.09.007, 2024.
Jiankang Wang, Wataru Natsu: Stray-corrosion-free ECM with electrolyte absorbed in a porous solid ball for dimple texturing on finished workpiece surfaces, Journal of Manufacturing Processes, 85, pp.713–723, doi: 10.1016/j.jmapro.2022.11.0772023, 2023.
Wen Liu，Congming Gao，Ye Chen，Wataru Natsu，Zuyuan Yu: Deep and Small Hole Drilling by Micro EDM Based on Internal Flushing Mixed Powder, Electromachining & Mould, 6, pp.12-20, 2022.
Teng Ma, Junfeng Yang, Zuyuan Yu, Guodong Li, Wataru Natsu: Influence of the punch with concave cutting-edge on the blanking force in micro punching process, Procedia CIRP, 113, pp.166-171, doi: 10.1016/j.procir.2022.09.126, 2022.
Shuhei Kodama, Reo Yabuuchi, Godai Miyaji, Wataru Natsu: Fabrication of nanostructure and deposition of metal particles by femtosecond laser ablation in electrolyte, Procedia CIRP, 113, pp.439-444, doi: 10.1016/j.procir.2022.09.197, 2022.
Dahai Mi, Huachen Xing, Wataru Natsu: Simulation investigation of influence of particle focusing on the machined surface of ECM process, Procedia CIRP, 113, pp.541-545, doi: 10.1016/j.procir.2022.09.186, 2022.
Wataru Natsua, Yosuke Hanamura: Influence of electrolyte flow on transfer characteristics of electrochemical machining for micro-hole, Procedia CIRP, 113, pp.453-458, doi: 10.1016/j.procir.2022.09.199, 2022.
Jiankang Wang, WataruNatsu: Mechanism and characteristics of electrochemical machining using electrolyte absorbed in solid porous ball, Precision Engineering, 77, pp.307-319, doi: 10.1016/j.precisioneng.2022.06.012, 2022.
Guodong Li, Wataru Natsu, Junfeng Yang, Zuyuan Yu: Bubble flushing effect in micro EDM drilling and its relation with debris, Journal of Materials Processing Technology, 305, 117590, doi: 10.1016/j.jmatprotec.2022.117590, 2022.
Wataru Natsu, Hikaru Takahashi: Research on Shaping of Tungsten Carbide Rod by Electrolyte Jet Machining, International Journal of Electrical Machining, 27, pp.8-15, 2022.
Teng Ma, Junfeng Yang, Zuyuan Yu, Guodong Li, Wataru Natsu: Influence of Concave Cutting-edge Punch on Blanking Force of Micro Punching Process, Electromachining & Mould, 3, pp.20-25, 2022.
Yukitoshi Ogasawara, Wataru Natsu: A Cost-Effective Approach to the Risk Reduction of Cable Fault Triggered by Laying Repeaters of Fiber-Optic Submarine Cable Systems in Deep-Sea, Journal of Marine Science and Engineering, 9(9), doi: 10.3390/jmse9090939, 2021.
Saori Hizume, Wataru Natsu: Mechanism clarification and realization of scanning electrochemical machining of titanium alloys, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 15(5), doi: 10.1299/jamdsm.2021jamdsm0055, 2021.
Guodong Li, Wataru Natsu, Zuyuan Yu: Elucidation of the mechanism of the deteriorating interelectrode environment in micro EDM drilling, International Journal of Machine Tools and Manufacture, 167, 103747, doi: 10.1016/j.ijmachtools.2021.103747, 2021.
Atsushi Sato, Wataru Natsu: Attempt of three-dimensional shape generation with electrolyte suction tool, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 15(3), doi: 10.1299/jamdsm.2021jamdsm0024, 2021.
Shuhei Kodama, Wataru Natsu: Effects of Electrolyte on Laser-Induced Periodic Surface Structures with Picosecond Laser Pulses,Nanomaterial, 11, 327, doi: 10.3390/nano11020327,2021
Guodong Li, Wataru Natsu, Zuyuan Yu: Elucidation of gap area phenomenon in micro EDM drilling through direct observation,Procedia CIRP, 95, pp.210-214, 2020
Masako Sakamoto, Wataru Natsu: Study on Machining Instability Phenomenon in Electrochemical Machining of Large Aspect-ratioHoles, Procedia CIRP, 95, pp.777-781, 2020
Shuhei Kodama, Wataru Natsu: Fabrication of multiscale structure by hybrid process with short-pulsed laser and electrochemical machining, Procedia CIRP, 95, pp.875-878, 2020
Saori Hizume, Wataru Nstsu: Problems and Solutions in Scanning Electrochemical Machining of Titanium Alloys, Procedia CIRP, 95,pp.712-716, 2020
Atsushi Sato, Wataru Natsu: Theoretical Verification of Film Forming in Local Electroplating Process with Electrolyte Suction Tool,International Journal of Automation Technology,14, 6, pp.1051-1061, 2020
Wataru Natsu,Junfeng He, Yu Iwanaga: Experimental Study on Electrochemical Machining with Electrolyte Confined by Absorption Material, Procedia CIRP, 87, pp.263-267, 2020.
Yukitoshi Ogasawara, Wataru Natsu: Proposal for reducing failure rate of fibre-optic submarine cables in deep-sea based on fault analysis and experiments, Journal of Advanced Marine Science and Technology Society, 25(2), pp.1-12, 2020.
Congyang Zhang, Rimao Zou, Zuyuan Yu, Wataru Natsu: Micro EDM aided by ultrasonic vibration in nitrogen plasma jet and mist, The International Journal of Advanced Manufacturing Technology, 106, pp.5269-5276, 2020.
Guodong Li, Wataru Natsu: Realization of micro EDM drilling with high machining speed and accuracy by using mist deionized water jet, Precision Engineering, 61, pp.136-146, 2020.
Y. Chen, Z. Yu, G. Li, S. Lei, W. Natsu: Material removal mode in 3D micro USM, MM Science Journal, Special Issue on HSM2019, pp.3053-3059, 2019.
Guodong Li, Wataru Natsu, Zuyuan Yu: Study on quantitative estimation of bubble behavior in micro hole drilling with EDM, International Journal of Machine Tools and Manufacture, 146, 2019.
Hongping Luo, Dahai Mi, Wataru Natsu: Characteristics of ECM polishing influenced by workpiece corner feature and electrolyte flow, Precision Engineering, 56, pp.330-342, 2019.
Guixian Liu, Yongjun Zhang, Wataru Natsu: Influence of electrolyte flow mode on characteristics of electrochemical machining with electrolyte suction tool, International Journal of Machine Tools and Manufacture, 142, pp.66-75, 2019.
Guodong Li, Wataru Natsu, Zuyuan Yu: Investigation of Depth-dependent Characteristics in Micro EDM Drilling Based on Direct Inter-electrode Area Observation, International Journal of Electrical Machining, 24, pp.33-38, 2019.
Kazuyoshi Ota, Wataru Natsu, Masayuki Okabe: Study on Genetation Machsnism and Mathematical Model of Force Signal in Developed Measurement System for Molding Release Resistance, 日本設計工学会誌, 54, 7, pp.433-444, 2019.
Kohei Otake, Yuki Ishii, Wataru Natsu: Experimental investigation on machining characteristics of difficult-to-machine materials with Electrochemical Mechanical Polishing, International Journal of Electrical Machining, 23, pp.32-37, 2018.
Saori Hizume, Wataru Nstsu: Influence of Machining Conditions on ECM Characteristics of Titanium Alloy in Shape Generation by Scanning Tool Electrode, Procedia CIRP, 68, pp.746-750, 2018.
Dahai Mi, Hongping Luo, Wataru Natsu: Investigation of Influence Factors of Surface Roughness at Corner Area in ECM process, Procedia CIRP, 68, pp.709-712, 2018.
Wataru Natsu, Hiroki Maeda: Realization of High-speed Micro EDM for High-aspect-ratio Micro Hole with Mist Nozzle, Procedia CIRP, 68, pp.575-577, 2018.
Guodong Li, Wataru Natsu, Zuyuan Yu: Study on Debris Behavior and its Influence on EDM Characteristics in Deep Micro-hole Machining, Procedia CIRP, 68, pp.578-581, 2018.
Hongping Luo, Guixian Liu, Yongjun Zhang, Chuanyun Zhang, Wataru Natsu: Flow Field Design and Experiments on Pulse ECM of Large-lead Ball Nut Raceway during Tool Cutting-out Stage, Procedia CIRP, 68, pp.690-693, 2018.
Hiroshi Nagoya, Wataru Natsu: Study on ECM Characteristics in Hole Machining with Electrolyte Suction Tool, International Journal of Electrical Machining, 22, pp.20-25, 2017.
Kouki Yamaguchi, Wataru Natsu: Investigation of Influence of Low-level Voltage on Machining Characteristics in Pulse Wire ECM, International Journal of Electrical Machining , 22, pp.14-19, 2017.
Dahai Mi, Wataru Natsu: Design of ECM Tool Electrode with Controlled Conductive Area Ratio for Holes with Complex Internal Features, Precision Engineering, 47, pp.54-61, 2017.
Wataru Natsu, Daiki Kurahata: Observation of Workpiece Surface in ECM Process of WC Alloy Micro-pin with Bipolar Pulses, International Journal of Electrical Machining, 21, pp.31-38, 2016.
Guodong Li, Zuyuan Yu, Jiawen Song, Can Li, Jianzhong Li, Wataru Natsu: Material Removal Modes of Quartz Crystals by Micro USM, Procedia CIRP, 42, pp.842-846, 2016.
Yulei Fu, Takumu Miyamoto, Wataru Natsu, Wansheng Zhao, Zuyuan Yu: Study on Influence of Electrode Material on Hole Drilling in Micro-EDM, Procedia CIRP, 42, pp.516-520, 2016.
Dahai Mi, Wataru Natsu: Simulation of Micro ECM for Complex-shaped Holes, Procedia CIRP, 42, pp.345-349, 2016.
Hidehiro Nomura, Dahai Mi, Wataru Natsu: Fabrication and Experimental Verification of Electrochemical Machining Tool for Complex-shaped Hole, Procedia CIRP, 42, pp.117-120, 2016.
Ken Maeda, Wataru Natsu: Study on Effect of ECM Conditions on Wettability of Machined Surface, Procedia CIRP, 42, pp.107-111, 2016.
Naoaki Nagashima, Wataru Natsu: Study on Parameter Determination for ECM Equivalent Circuit and its Verification, Procedia CIRP, 42, pp.340-344, 2016.
Yuki Takashima, Wataru Natsu: Study on Electrochemical Machining of Oil Pocket on Sliding Surface with Electrolyte Suction Tool, Procedia CIRP, 42, pp.112-116, 2016.
Dahai Mi, Wataru Natsu: Proposal of ECM method for holes with complex internal features bycontrolling conductive area ratio along tool electrode, Precision Engineering, 42, pp.179-186, 2015.
Atsushi Sato, Wataru Natsu: Proposal and Verification of Area-limited Electroplating with Suction Tool, International Journal of Electrical Machining, 20, pp.37-43, 2015.
Yande Liang, Liming Shu, Wataru Natsu: Anisotropic Wetting Characteristics versus Roughness on Machined Surfaces of Hydrophilic and Hydrophobic Materials, Applied Surface Science, 331, pp.41-49, 2015.
Yande Liang, Liming Shu, Wataru Natsu, Fuben He: Analysis and Correction Research on Eccentric Error of Micro Electrode Assembly in the Processing of Electrochemical Machining, Electromachining & Mould, 4, pp.24-27, 2014.
Jiawen Song, Tao Wang, Zuyuan Yu, Jianzhong Li, Wataru Natsu: Discussion on Criterion for Brittle-plastic Mode in Micro USM, Electromachining & Mould, 2, pp.51-54, 2014.
Katsuaki Endo, Wataru Natsu: Proposal and Verification of Electrolyte Suction Tool with Function of Gap-width Detection, International Journal of Electrical Machining, 19, pp.34-39, 2014.
Yasushi Takeo, Wataru Natsu: Study on Influence of skill level on tool wear during feed mode change in lathe work, Advanced Materials Research, 774-776, pp.1085-1089, 2013.
Xuejie Guo, Zuyuan Yu, Zhongwei Lv, Jianzhong Li, Wataru Natsu: Optimization of Planetary Movement Parameters for Microhole Drilling by Micro-Electrical Discharge Machining, Journal of Micro- and Nano-Manufacturing (Transactions of the ASME), 1, 031007-1, 2013.
Tomohiko Ichikawa, Wataru Natsu: Investigation of Machining Characteristics of Micro-EDM with Ultrasonically Vibrated Machining Fluid under Ultra-small Discharge Energy, International Journal of Electrical Machining, 18, pp.1-7, 2013.
Wataru Natsu, Daiki Kurahata: Influence of ECM Pulse Conditions on WC Alloy Micro-pin Fabrication, Procedia CIRP, 6, pp.402–407, 2013.
Tomohiko Ichikawa, Wataru Natsu: Realization of Micro-EDM under Ultra-Small Discharge Energy by Applying Ultrasonic Vibration to Machining Fluid, Procedia CIRP, 6, pp.327-332, 2013.
W. Pei, Z. Yu, J. Li, C. Ma, W. Xu, X. Wang, W. Natsu: Influence of Abrasive Particle Movement in Micro USM, Procedia CIRP, 6, pp.552-556, 2013.
Shinji Harada, Wataru Natsu: Influence of Machining Process on Gap-Width Detection in Pulse ECM, Applied Mechanics and Materials, 220-223, pp.2000-2003, 2012.
Benjamin Akimoto, Wataru Natsu: Study on Parameter Determination for ECM Equivalent Circuit, Applied Mechanics and Materials, 220-223, pp.1990-1994, 2012.
Sosuke Kurogi, Wataru Natsu, Zuyuan Yu: Investigation of Machining Characteristics of Ultrasonic Vibration Assisted ECM, Applied Mechanics and Materials, 217-219, pp.2555-2559, 2012.
Katsuaki Endo, Wataru Natsu: Influence of Low-Level Voltage in Pulse ECM on Electrode Wear and Machining accuracy, Applied Mechanics and Materials, 217-219, pp.2388-2392, 2012.
Tomohiko Ichikawa, Wataru Natsu: Study on Machining Characteristics of Ultrasonic Vibration Assisted Micro-EDM, Applied Mechanics and Materials, 217-219, pp.2163-2166, 2012.
Wataru Natsu, Atsushi Terada: Approach to Detect and Control Gap-width with Peak Current in Pulse ECM, Advanced Materials Research, 482-484, pp.1973-1978, 2012.
Tatsuki Igarashi, Yukihiro Ito, Wataru Natsu and Toshihiko Kuwabara: Simulation of Ring Blank Drawing by Finite Element Method, Advanced Materials Research, 479-481, pp.102-110, 2012.
Sha Li, Wataru Natsu, Takeshi Masaki, Zuyuan Yu: Investigation on the Influence of Machining Fluid on Processing Characteristics in Micro-EDM, Advanced Materials Research, 479-481, pp.407-413, 2012.
Chao Qu,Wataru Natsu, Masanori Kunieda: Clarification of EDM Phenomena by Spectroscopic Analysis, Journal of Advanced Mechanical Design, Systems and Manufacturing, 6, 6, pp908-915, 2012.
Naoki Shibuya, Yukihiro Ito, Wataru Natsu: Electrochemical Machining of Tungsten Carbide Alloy Micro-pin with NaNO3 Solution, International Journal of Precision Engineering and Manufacturing, 13, 11, pp.2075-2078, 2012.
Wataru Natsu, Hisashi Nakayama, Zuyuan Yu: Improvement of ECM Characteristics by Applying Ultrasonic Vibration, International Journal of Precision Engineering and Manufacturing, 13, 7, pp.1131-1136, 2012.
Naoki Shibuya, Wataru Natsu: Fabrication of Tungsten Carbide Alloy Micro-pin with Environment-Responsive ECM Using Ultra-low Concentration Electrolyte, International Journal of Electrical Machining, 17, pp.32-37, 2012.
Yuna Yahagi, Wataru Natsu, Tomohiro Koyano, Masanori Kunieda: Reduction of Tool Wear in Non-contact Electrostatic Induction Feeding EDM, International Journal of Electrical Machining, 17, pp.21-25, 2012.
Masanori Kunieda, Yuki Kaneko, Wataru Natsu: Reverse simulation of sinking EDM applicable to large curvatures, Precision Engineering, 36, 2, pp.238-243, 2012.
Ye Yang, Wataru Natsu, Wansheng Zhao: Realization of Eco-friendly Electrochemical Micro-machining by Using Mineral Water as the Electrolyte, Precision Engineering, 35, 2, pp.204-213, 2011.
Wataru Natsu, Takeshi Miyata: Fabrication of Small Polishing Tool by Using Electrophoresis Phenomenon, Advanced Materials Research, 126-128, pp.481-486, 2010.
Shingo Tsubota, Wataru Natsu: Research on Axisymmetric Free-form Creation with Rotating Polishing Tool, Advanced Materials Research, 126-128, pp.499-504, 2010.
Wataru Natsu, Takashi Kunimi: Analysis of ECM Phenomena with Equivalent Circuit for Electrolysis, International Journal of Electrical Machining, 15,? pp.45-50, 2010.
Yukihiro Ito, Wataru Natsu, and Masanori Kunieda: Effect of Anisotropy on Shape Measurement Accuracy of Silicon Wafer Using Three-Point-Support Inverting Method, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 4, 5, pp.1066-1075, 2010.
Wataru Natsu, Satoshi Ooshiro, Masanori Kunieda: Research on Generation of Three-Dimensional Surface with Micro Electrolyte Jet Machining, CIRP Journal of Manufacturing Science and Technology, 1, pp.27-34, 2008.
Akira Kojima, Wataru Natsu, and Masanori Kunieda: Spectroscopic Measurement of Arc Plasma Diameter in EDM, Annals of the CIRP, 57, 1, pp.203-207, 2008.
Wataru Natsu, Mayumi Shimoyamada, Masanori Kunieda: Study on Expansion Process of EDM Arc Plasma, JSME International Journal Series C, 49, 2, pp.600-605, 2006.
Tomone Ikeda, Wataru Natsu, Masanori Kunieda: Electrolyte Jet Machining Using Multiple Nozzles, International Journal of Electrical Machining, 11, pp.25-32, 2006.
Wataru Natsu, Yukihiro Ito, Masanori Kunieda, Kaoru Naoi, Nobuaki Iguchi: Effects of Support Method and Mechanical Property of 300mm Silicon Wafer on Sori Measurement, Precision Engineering, 29, 1, pp.19-26, 2005.
Wataru Natsu, Satoyuki Ojima, Teruki Kobayashi, Masanori Knieda: Temperature Distribution Measurement in EDM Arc Plasma Using Spectroscopy, JSME International Journal Series C, 47, 1, pp.384-390, 2004.
Wataru Natsu, Masanori Kunieda, Nobuhiko Nishiwaki: Study on Influence of Inter-electrode Atmosphere on Carbon Adhesion and Removal Amount, International Journal of Electrical Machining, 9, pp.40-47, 2004.
Heng Xia, Masanori Kunieda and Nobuhiko Nishiwaki: Simulation of Electrode Surface Temperature in Die-Sinking EDM Process, International Journal of Electrical Machining, 4, pp.13-18, 1999.
Heng Xia, Masanori Kunieda and Nobuhiko Nishiwaki: Removal Amount Difference between Anode and Cathode in EDM Process, International Journal of Electrical Machining, 1, pp.45-52, 1996.
Heng Xia, Masanori Kunieda, Nobuhiko Nishiwaki, and Noam Lior: Measurement of Energy Distribution into Electrodes in EDM Processes, Advancement of Intelligent Production JSPE Publication Series, 1, pp.601-606, 1994.
Masanori Kunieda, Heng Xia, Nobuhiko Nishiwaki: Observation of Arc Column Movement during Monopulse Discharge in EDM, Annals of the CIRP, 41, 1, pp227-230, 1992.
International Conference Papers with Peer Review
Takahiro Inadama, Wataru Natsu: Study on Shape Generation for Titanium Alloys by Overlapping Grooves in Scanning ECM with Electrolyte Suction Tool, Proceedings of The 26th International Symposium on Advances in Abrasive Technology, 2024.
Qingrong Zhang, Wataru Natsu: Reduction of stray corrosion in electrochemical machining by utilizing hydrogen bubbles generated with bipolar pulses and auxiliary electrode, Proceedings of The 25th International Symposium on Advances in Abrasive Technology, 2023.
Ye Chen, Wataru Natsu, Zuyuan Yu: Observation of effect of bubbles accumulation on discharge environment through electrical discharge drilling of micro-hole in fine glass tube, Proceedings of The 25th International Symposium on Advances in Abrasive Technology, 2023.
Kazuna Otani, Masako Sakamoto, Shuhei Kodama, Wataru Natsu: Effect of tip shape of pipe electrode on accuracy in electrochemical machining of deep cooling holes, Proceedings of 19th International Conference on Precision Engineering, C108, 2022.
Reo Yabuuchi, Shuhei Kodama, Godai Miyaji, Wataru Natsu: Local copper precipitation with ultrashort-pulsed laser ablation in copper sulfate solution, Proceedings of 19th International Conference on Precision Engineering, C109, 2022.
Takahiro Inadama, Shuhei Kodama, Wataru Natsu: Study on machining characteristics of titanium alloys in scanning ECM with electrolyte suction tool, Proceedings of 19th International Conference on Precision Engineering, C120, 2022.
Kazuyoshi Oota, Kyohei Nakamura, Koharu Horikawa and Wataru Natsu: Study on the Influence of Ventilation Position and Cutting Conditions on Breathable Molds, Proceedings of the World Congress on Micro and Nano Manufacturing, pp.71-74, 2022.
Koharu Horikawa, Shuhei Kodama, Wataru Natsu, Kazuyoshi Oota: Effect of permeable mold and recovery of air-permeability of porous insert by electrochemical machining, Proceedings of 18th International Symposium on Electrochemical Machining Technology 2022 (INSECT 2022), pp.23-29, 2022.
Shuhei Kodama, Reo Yabuuchi, Wataru Natsu: Cu microprecipitation with electrolysis assisted short-pulsed laser irradiation in CuSO4 solution, Proceedings of 18th International Symposium on Electrochemical Machining Technology 2022 (INSECT 2022), pp.187-192, 2022.
Jiankang Wang, Wataru Natsu: Simulation and verification of electrochemical machining with electrolyte collected and confined by a porous solid ball, Proceedings of 18th International Symposium on Electrochemical Machining Technology 2022 (INSECT 2022), pp.193-198, 2022.
Tamon Obe, Wataru Natsu, Takahisa Masuzawa: Limitation of current area of ECM with electrolyte confined by absorption material, Proceedings of 18th International Symposium on Electrochemical Machining Technology 2022 (INSECT 2022), pp.145-150, 2022.
Tamon Obe, Wataru Natsu: Research on characteristics of ECM with electrolyte confined by absorption material, Proceedings of 17th International Symposium on Electrochemical Machining Technology (INSECT 2021), pp.67-72, 2021.
Shuhei Kodama, Wataru Natsu: Influence of frequency and pulse duration on fabrication of periodic nanostructure by ultrashort-pulsed laser, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.551-554, 2021.
Guodong Li, Wataru Natsu and Zuyuan Yu: The bubble movement process in micro EDM drilling from generation to escape, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21),pp.498-502, 2021.
Koharu Horikawa, Kazuyoshi Ota, Shuhei Kodama and Wataru Natsu: Investigation of surface characteristics of porous materials processed with electrochemical machining, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.519-524, 2021.
Tamon Obe, Shuhei Kodama, Wataru Natsu: Characteristic investigation of electrochemical machining using quasi-solid electrolyte, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.528-528, 2021.
Akihisa Uchida, Shuhei Kodama and Wataru Natsu: Study on improvement of transfer accuracy in ECM of fine taper hole, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.529-532, 2021.
Fuma Yada, Masako Sakamoto, Shuhei Kodama and Wataru Natsu: Simulation of edge-sagging phenomenon in electrochemical machining of cooling holes, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.533-536, 2021.
Jiankang Wang and Wataru Natsu: Pattern machining by using the electrochemical machining through electrolyte absorbed with porous material, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.313-317, 2021.
Teppei Takata, Wataru Natsu and Guixian Liu: Observation of gap phenomenon in electrochemical machining by using electrolyte suction tool with auxiliary anode, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.318-320, 2021.
Kazuyoshi Oota, Wataru Natsu and Kyohei Nakamura: Verification of demolding assist effect with compressed air due to difference in ventilation direction of breathable mold, Proceedings of the 10th International Conference on Leading Edge Manufacturing in the 21st Century (LEM21), pp.137-139, 2021.
Shuhei Kodama, Wataru Natsu: Effects of electrolytes on fine structures fabricated by hybrid process with shortpulsed laser and electrochemical machining, Proceedings of 21st International Conference and Exhibition, pp.135-136, 2021.
Jiankang Wang, Wataru Natsu: Investigating characteristics of electrochemical machining through electrolyte absorbed with porous solid material, Proceedings of 21st International Conference and Exhibition, pp.169-172, 2021.
Takafumi Tabata, Shuhei Kodama, Wataru Natsu, Guanxian Liu: Characteristics of electrochemical machining by using electrolyte suction tool with auxiliary anode, Proceedings of 21st International Conference and Exhibition, pp.179-182, 2021.
Takafumi Tabata, Wataru Natsu, Guanxian Liu: Research on machining characteristics and tool wear in ECM with electrolyte suction tool with auxiliary anode, Proceedings of 3rd World Congress on Micro and Nano Manufacturing, pp.302-306, 2019.
Kazuyoshi Oota, Wataru Natsu, Masayuki Okabe, Yuya Aihoshi, Misato Nagasawa: Correlation between demolding force and physical property of molded resin in injection molding, Proceedings of the 8th International Conference on Manufacturing, Machine Design and Tribology, 2019.
Haruki Nakamura, Kazuyoshi Oota, Wataru Natsu: Temperature distribution of mold and molded product and its influence on demolding force in injection molding process, Proceedings of the 8th International Conference on Manufacturing, Machine Design and Tribology, 2019.
Saori Hizume, Wataru Nstsu: Research on influence of current density distribution in scanning electrochemical of titanium alloy, Proceedings of 17th International Conference on Precision Engineering, 2018.
Yosuke Hanamura, Wataru Natsu: Research on transfer characteristics of electrochemical machining for micro-hole with complicated shape, Proceedings of 17th International Conference on Precision Engineering, 2018.
Atushi Sato, Wataru Natsu: Attempt of Three-dimensional Shape Generation with Electrolyte Suction Tool, Proceedings of 17th International Conference on Precision Engineering, 2018.
Sowa Sakozono, Wataru Natsu: Influence of Machining Conditions on electrolytic corrosion in micro ECM with misted deionized water, Proceedings of 17th International Conference on Precision Engineering, 2018.
Guodong Li, Wataru Natsu, Zuyuan Yu: Clarification on the behavior of bubble in micro EDM drilling, Proceedings of 17th International Conference on Precision Engineering, 2018.
Guixian Liu, Wataru Nstsu: Influence of suction pressure and flow direction on ECM Characteristics with suction tool, Proceedings of 17th International Conference on Precision Engineering, 2018.
Wataru Natsu, Guixian Liu, Saori Hizume: Realization of Current Area Restriction in ECM Process by Electrolyte Suction Tool with Auxiliary Electrode, Proceedings of International Symposium on Advances in Abrasive Technology 2018, 2018.
Ken Maeda, Wataru Natsu: Proposal of formation of tapered micro-hole by utilizing electrolyte flow in ECM process, Proceedings of euspen's 18th International Conference, pp.421-422, 2018.
Wataru Natsu, Ryota Nakamura, Hiroki Maeda: Research on machining characteristics of micro hole drilling with mist nozzle in EDM process, The 20th International Symposium on Advances, 2017.
Makoto Ogino, Wataru Natsu: Influence of tool material and electrolyte on characteristics of Wire ECM with raised low-level voltage, Proceedings of euspen's 17th International Conference, 2017.
Guodong Li, Wataru Natsu, Zuyuan Yu: Observation of phenomenon in gap area during hole drilling with micro EDM, Proceedings of euspen's 17th International Conference, 2017.
Kazuyoshi Oota, Masayuki Okabe, Wataru Natsu: Development of the Monitoring System for the Demolding Phenomenon in Injection Mold, Proceedings of 2nd International Conference on Machining, Materials and Mechanical Technologies, 2016.
Wataru Natsu, Tomonori Ota: Research on shape generation of tungsten carbide alloy by electrolyte jet with bipolar pulse, Proceedings of the 16th euspen International Conference, pp.465-466, 2016.
Wataru Natsu, Kazuki Takiguchi, Tomohiko Ichikawa, Zuyuan Yu: Micro-Probe Fabrication Utilizing Abnormal Wear on Tool End-Surface in Micro-EDM, Proceedings of The 8th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), 2015.
Kouki Yamaguchi, Wataru Natsu: Study on ECM Characteristics by using Pulse with Raised Low level Voltage, Proceedings of The 8th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), 2015.
Jiawen Song, Tao Wang, Zuyuan Yu, Jianzhong Li, Wataru Natsu: Study of Criterion of Material Removal Mode in Micro USM, Proceeding of the 9th International Conference on MicroManufacturing, 2014.
Yukihiro Ito, Wataru Natsu, Masanori Kunieda: Investigation of Shape Measurement Method for Large-diameter Silicon Wafer with Additional Support, Proceedings of the 14th euspen International Conference, pp.173-176, 2014.
Masashi Machida, Wataru Natsu: Flow Analysis of working Fluid in Micro Electrical DischargeDrilling Process, Proceedings of the 14th euspen International Conference, pp.107-111, 2014.
Koki Yamaguchi, Wataru Natsu: Proposal of Pulse Power Supply with Raised Low-level Voltage for Accuracy Improvement in Wire ECM, Proceedings of the 14th euspen International Conference, pp.103-106, 2014.
Wataru Natsu, Takumu Miyamoto, Sha Li: Clarification and Solution of Depth-dependent Tool Wear and Removal Rate in Micro Electrical Discharge Drilling, Proceedings of the 13th euspen International Conference, pp.149-153, 2013.
Katsuaki Endo, Wataru Natsu: Proposal of Electrolyte Suction Tool Electrode for Machining Area Confinement and Gap-width Detection, Proceedings of the 13th euspen International Conference, pp.167-171, 2013.
Xuejie Guo, Zuyuan Yu, Zhongwei Lv, Jianzhong Li, Wataru Natsu: Optimization of Planetary Movement Parameters for Micro Hole Drilling by Micro EDM, Proceedings of International Conference on Micro Manufacturing 2013 (ICOMM 2013), pp.97-101, 2013.
Z. Yu, M. Guo, J. Li, L. Wang and W. Natsu: Effect of Different Microstructure of Materials on Micro-EDM, Proceedings of International Conference on Micro Manufacturing 2012 (ICOMM 2012), pp 134-138, 2012.
Chun-chiao Chuang, Yasuhiko Kawabe, Wataru Natsu: Research on Quality Assessment Criterion of Supplier for Automobile Parts Sourcing, Proceedings of the 11th International Conference on Industrial Management (ICIM2012), pp.90-95, 2012.
Yasuhiko Kawabe, Andy Palmer, Wataru Natsu: Research on Organization and Management for Optimized Parts Supply from the Early Phase of Development, Proceedings of the 11th International Conference on Industrial Management (ICIM2012), pp.67-72, 2012.
Maki Mazuyama, Yasuhiko Kawabe, Wataru Natsu, Andy Palmer: Sourcing Cost Reduction for Automobile-Parts by Opitimizing Suppliers' Combination, Proceedings of the 11th International Conference on Industrial Management (ICIM2012), pp.44-48, 2012.
Tomohiko Ichikawa, Wataru Natsu: Improvement of Micro-EDM Characteristics by Applying Ultrasonic Vibration to Machining Fluid, Proceedings of the 12th euspen International Conference, pp.124-127, 2012.
Sinji Harada, Wataru Natsu: Study on Sensitivity of Gap-width Detection with Peak Current in Pulse ECM, Proceedings of the 12th euspen International Conference, pp.120-123, 2012.
Wataru Natsu, Atsushi Terada: Approach to Detect and Control Gap-width with Peak Current in Pulse ECM, Proceedings of the 3rd International Conference on Manufacturing Science and Engineering, pp.1973-1978, 2012.
Tatsuki Igarashi, Yukihiro Ito, Wataru Natsu and Toshihiko Kuwabara: Simulation of Ring Blank Drawing by Finite Element Method, Proceedings of the 3rd International Conference on Manufacturing Science and Engineering, pp.102-110, 2012.
Yuna Yahagi, Wataru Natsu, Tomohiro Koyano, Masanori Kunieda: Reduction of Tool Wear in Non-contact Electrostatic Induction Feeding EDM, Proceedings of The 6th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), 2011.
Chao Qu, Wataru Natsu, Masanori Kunieda : Clarification of EDM Phenomena by Spectroscopic Analysis, Proceedings of The 6th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), 2011.
Naoki Shibuya, Wataru Natsu: Micro Pin Fabrication by ECM with Ultra-low Concentration Electrolyte, Proceedings of the 11th euspen International Conference, pp.297-300, 2011.
Yukihiro Ito, Wataru Natsu, Masanori Kunieda: Simultaneous Measurement of Warp and Thickness of Large-Diameter Silicon Wafer Using Three-Point-Support Inverting Method, Proceedings of the 11th euspen International Conference, pp.166-170, 2011.
Jianzhong Li, Feng Shen, Wataru Natsu, Zuyuan Yu: Micro Hole Drilling in TA0-1 by Micro EDM, Proceedings of the 5th International Conference on MicroManufacturing, pp.119-122, 2010.
Ye Yang, Wataru Natsu, Wansheng Zhao: Fundamental Research on Electrochemical Micro-machining by Using Water as the Electrolyte, Proceedings of the 16th International Symposium on Electromachining, pp.307-311, 2010.
Atsushi Terada, Wataru Natsu: Development of Gap-width Controlling System for Micro-ECM, Proceedings of the 16th International Symposium on Electromachining, pp.357-360, 2010.
Yukihiro Ito, Wataru Natsu, Masanori Kunieda: Effect of Anisotropy on Shape Measurement Accuracy of Silicon Wafer Using Three-Point-Support Inverting Method, Proceedings of the 5th International Conference on Leading Edge Manufacturing in the 21st Century, pp.781-786, 2009.
Wataru Natsu, Takashi Kunimi, Atsushi Terada: Understanding ECM Phenomenon by Using Equivalent Circuit for Electrolytic Reaction, Proceedings of the euspen 9th International Conference, pp.491-494, 2009.
Takashi Sasaki, Yukihiro Ito, Wataru Natsu: Study on Error Factors for Shape Measurement of Large-size Silicon Wafer with Vertical Measuring Device, Proceedings of the euspen 9th International Conference, pp.299-302, 2009.
Wataru Natsu, Mafumi Teranishi: Research on Surface Generation with Rotating Polishing Tool, Proceedings of the 8th International Conference on Frontiers of Design and Manufacturing, pp.2572-2577, 2008.
Wataru Natsu, Hirofumi Suzuki: Study on Support Method for Shape Measurement of Photomask Glass Substrates, Proceedings of the 8th International Conference on Frontiers of Design and Manufacturing, pp.2578-2583, 2008.
Nobuhiko Nishiwaki, Sankei Hori, Wataru Natsu: Detection of Electric Discharge Machining State By Using Ultrasonic Technique, Proceedings of the 17th World Conference on Non-destructive Testing, pp.10-16, 2008.
Satoshi Ooshiro, Masanori Kunieda, Wataru Natsu: Study on Micro Electrolyte Jet Machining, Proceedings of the 15th International Symposium on Electromachining, pp.387-392, 2007.
Akira Kojima, Wataru Natsu, Masanori Kunieda: Observation of Arc Plasma Expansion and Delayed Growth of Discharge Crater in EDM, Proceedings of the 15th International Symposium on Electromachining, pp.1-4, 2007.
Wataru Natsu, Tomone Ikeda, Masanori Kunieda:? Study on Characteristics of High Speed Electrolyte Jet Machining, Proceedings of the 7th International Conference on Frontiers of Design and Manufacturing, pp.333-338, 2006.
Wataru Natsu, Nobuaki Iguchi: Development of Lapping Tool and Method for Large Slender Ceramaic Part, Proceedings of the 7th International Conference on Frontiers of Design and Manufacturing, pp.251-254, 2006.
Wataru Natsu, Mayumi Shimoyamada, Masanori Kunieda: Observation of Temporal Change of Arc Plasma in EDM, Proceedings of the Third International Conference on LEM21, pp.773-778, 2005.
Yukihiro Ito, Watru Natsu, Masanori Kunieda, Noriyuki Maruya and Nobuaki Iguchi: Accuracy Estimation of Shape Measurement of Thin-large Panel with Three-point-support Inverting Method, Proceedings of the Third International Conference on LEM21, pp.339-344, 2005.
Wataru Natsu, Tomone Ikeda, Masanori Kunieda: Machining Complicated Patterns with Electrolyte Jet Machining, Proceedings of 5th euspen International Conference, pp.649-653, 2005.
Yukihiro Ito, Watar Natsu, Masanori Kunieda, Noriyuki Maruya, Nobuaki Iguchi: Study on Shape Measurement of Glass Substrates for FPD, Proceedings of 5th euspen International Conference, pp.29-32, 2005.
Wataru Natsu, Masanori Kunieda: Study on Different Local Wear Ratio along Flushing Flow in EDM, Proceedings of the 6th International Conference on Frontiers of Design and Manufacturing, pp.570-572, 2004.
Wataru Natsu, Hiroaki Hashimoto, Masanori Kunieda, Nobuhiko Nishiwaki: Research on Energy Distribution into Two Electrodes in EDM Process, Proceedings of the 6th International Conference on Frontiers of Design and Manufacturing, pp.573-575, 2004.
Wataru Natsu, Satoyuki Ojima, Teruki Kobayashi, Masanori Kunieda: Temperature Distribution Measurement in EDM Arc Plasma Using Spectroscopic Analysis, Proceedings of the Second International Conference on LEM21, pp.949-954, 2003.
Wataru Natsu, Yukihiro Ito, Masanori Kunieda: Study on Support Method in Sori Measurement of 300mm Silicon Wafer, Proceedings of ASPE 2003 Annual Meeting, pp.331-334, 2003.
Shinya Hayakawa, Wataru Natsu, Masanori Kunieda and Nobuhiko Nishiwaki: Analysis of Time Required to deionize an EDM Gap, Proceedings of International Symposium on Molecular and Microscale Heat Transfer in Materials Processing and Other Applications, pp.368-377, 1996.
Wataru Natsu, Masanori Kunieda: Research on Machining Characteristics of Polarity-Changed Pulse in EDM, Proceedings of the 11th International Symposium on Electromachining, pp.181-190, 1995.
International Conference Papers without Peer Review
Ye Chen, Guodong Li, Wataru Natsu: Improvement of Aspect Ratio of Micro-hole Drilled with EDM by Promoting Removal of Bubbles and Debris, Proceedings of 9th Symposium on International Collaboration on Micro and Precision Electrical Machining, 2024.
Qingrong Zhang, Wataru Natsu: High-precision Electrochemical Machining Technology Based on Specially Generated Hydrogen Bubble Film in Non-machining Areas, Proceedings of 9th Symposium on International Collaboration on Micro and Precision Electrical Machining, 2024.
Kaisong Chen, Jiankang Wang, Junfeng He, Wataru Natsu: Proposal for Non-contact Electrochemical Machining Using Porous Ball to Confine Electrolyte, Proceedings of 9th Symposium on International Collaboration on Micro and Precision Electrical Machining, 2024.
Jiankang Wang, Xiaoshun Li, Yexuan Zhang, Wataru Natsu: Research on electrochemical machining in the controllable electrolyte-distribution ECM method based on machine vision, Proceedings of 9th Symposium on International Collaboration on Micro and Precision Electrical Machining, 2024.
Qingrong Zhang, Hongping Luo, Wataru Natsu: Calculating the parameters of the electric double layer in pulsed electrochemical machining by analysis of experimentally-obtained current waveform, International Conference on Precision Engineering and Sustainable Manufacturing (PRESM2024), 2024.
Ye Chen, Zuyuan Yu, Wataru Natsu: Relationship between inter-electrode environment and exhaustion behavior of byproducts in electrical discharge drilling of micro deep-hole, International Conference on Precision Engineering and Sustainable Manufacturing (PRESM2024), 2024.
Jiankang Wang, Wataru Natsu: Design and application of electrochemical machining through electrolyte absorbed with porous solid ball, Proceedings of International Workshop on Non-traditional Machining 2022, pp.37-40, 2022.
Guodong Li, Wataru Natsu, Zuyuan Yu: Insights of tool wear, bubble and debris in micro EDM drilling, Proceedings of International Workshop on Non-traditional Machining 2022, pp.41-50, 2022.
Ye Chen, Guodong Li, Wataru Natsu: Effect of electric field distribution on discharge location in EDM, Proceedings of International Workshop on Non-traditional Machining 2022, pp.51-55, 2022.
Huachen Xing, Wataru Natsu, Dahai Mi: Particle focusing phenomenon of inter electrode by products and its influence on machined anode surface in electrochemical machining, Proceedings of International Workshop on Non-traditional Machining 2022, pp.56-61, 2022.
Teng Ma, Junfeng Yang, Zuyuan Yu, Guodong Li, Wataru Natsu: Influence of the punch with concave cutting-edge on the blanking force in micro punching process, Proceedings of 7th Symposium on International Collaboration on Micro and Precision Electrical Machining, pp.54-57, 2022.
Tamon Obe, Wataru Natsu: Sustainability of Electrochemical Machining with Electrolyte Confined by Absorption Material, Proceedings of 7th Symposium on International Collaboration on Micro and Precision Electrical Machining, pp.78-82, 2022.
Kazuna Otani, Masako Sakamoto, Wataru Natsu, Dahai Mi: Elucidation of Hole Curvature Phenomenon in Electrochemical Machining of Deep Holes, Proceedings of 7th Symposium on International Collaboration on Micro and Precision Electrical Machining, pp.83-86, 2022.
Takahiro Inadama, Shuhei Kodama, Wataru Natsu: Characteristics of ECM of difficult-to-cut materials by using electrolyte suction tool with auxiliary anode, Proceedings of 7th Symposium on International Collaboration on Micro and Precision Electrical Machining, pp.87-91, 2022.
Reo Yabuuchi, Shuhei Kodama, Wataru Natsu: Effect of electrolyte concentration on metal particle deposition by femtosecond laser, Proceedings of 7th Symposium on International Collaboration on Micro and Precision Electrical Machining, pp.92-95, 2022.
Keigo Kato, Kazuyoshi Ota, Wataru Natsu: Electrochemical machining of porous metal material and its application, Proceedings of 6th Symposium for International Cooperation on Micro and Precision Electrical Machining (SICMPEM), pp.51-56, 2021
Jiankang Wang, Wataru Natsu: Exploratory study about limitation of electrolyte contact area by using porous solids in ECM process, Proceedings of 6th Symposium for International Cooperation on Micro and Precision Electrical Machining (SICMPEM), pp.43-46, 2021
Wataru Natsu, Ken Maeda, Yosuke Hanamura: Electrochemical Machining of Micro Holes with Complicated Shape, Proceedings of 6th Symposium for International Cooperation on Micro and Precision Electrical achining (SICMPEM), pp.20-24, 2021
Guodong Li, Wataru Natsu, Zuyuan Yu: Bubble behavior in micro EDM drilling, Proceedings of 6th Symposium for International Cooperation on Micro and Precision Electrical Machining (SICMPEM), pp.1-3, 2021
Wataru Natsu, Saori Hizume: Influence of current density distribution on machining characteristics of titanium alloy in scanning ECM with suction tool, 5th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2019.
Wataru Natsu, Guodong Li: Clarification on the behavior of bubble in micro EDM drilling, 5th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2019.
Wataru Natsu, Kazuyoshi Ota: Correlation between mold release resistance and resin physical properties in injection molding, 5th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2019.
Wataru Natsu: Introduction of ECM Project Supported by Cross-ministerial Strategic Innovation Promotion Program (SIP), International Workshop on Nontraditional Machining, Guangzhou, 2018.
Guodong Li, Wataru Natsu: Clarification of Phenomenon of Micro EDM drilling with High-speed Video Camera, International Workshop on Nontraditional Machining, Guangzhou, 2018.
Atsushi Sato, Wataru Natsu: Attempt of Three-Dimensional Shape Generation with Electrolyte Suction Tool, International Workshop on Nontraditional Machining, Guangzhou, 2018.
Saori Hizume, Wataru Natsu: Influence of Low Current Density on Scanning ECM of Titanium Alloy by Suction Tool, International Workshop on Nontraditional Machining, Guangzhou, 2018.
Yosuke Hanamura, Wataru Natsu: Research on Transfer Characteristics of Electrochemical Machining for Micro-hole with Complicated Shape, International Workshop on Nontraditional Machining, Guangzhou, 2018.
Wataru Natsu, Hiroki Maeda, Ryota Nakamura: Study on EDM characteristics in micro-hole drilling with misted dielectric jet, Proceedings of 4th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2017.
Ken Maeda, Wataru Natsu: Study on influence of electrolyte flow on micro-hole shape in electrochemical machining, Proceedings of 4th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2017.
Hongping Luo, Guixian Liu, Wataru Natsu: Influence of electrode shape on current density distribution in ECM process, Proceedings of 4th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2017.
Guodong LI, Wataru Natsu, Zuyuan Yu: Investigation of reason for depth limit in deep micro-hole drilling with EDM through direct observation of gap phenomenon, Proceedings of 4th Symposium for International Cooperation on Micro and Precision Electrical Machining, 2017.
Naoaki Nagashima, Wataru Natsu: Influence of Machining Conditions on ECM Equivalent Circuit's Parameters, Proceedings of the 17th International Machine Tool Engineer' Conference, 2017.
Wataru Natsu,Yuki Takashima, Saori Hizume,Junya Hamamoto: Electrochemical Machining with Application of Electrolyte Suction Tool, Proceedings of the 17th International Machine Tool Engineer' Conference, 2017.
Koki Yamaguchi, Wataru Natsu: Influence of Pulse Waveform on Machining Characteristics in Wire ECM, Proceedings of the 3rd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Wataru Natsu: Application of Suction Tool in Electrochemical Machining and Electroplating, Proceedings of the 3rd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Guodong Li, Zuyuan Yu, Jiawen Dong, Jianzhong Li, Wataru Natsu: Identification of Material Removal Mode of Silicon and Quartz Crystals by Micro USM, Proceedings of the 3rd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Dahai Mi, Wataru Natsu: Realization of Complex Rotational shaped Holes with ECM, Proceedings of the 2nd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Atsushi Sato, Wataru Natsu: A Novel Approach of Realization Local Electroplating with Suction Tool, Proceedings of the 2nd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Wataru Natsu, Takumu Miyamoto, Zuyuan Yu: Research on Depth-dependent Tool Wear and Removal Rate in Micro Electrical Discharge Drilling, Proceedings of the 2nd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Kazuki Takiguchi, Wataru Natsu: Study on Fabricating Probe Utilizing Micro Hole on End Face of Tool Electrode, Proceedings of the 2nd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Wataru Natsu: Application of Electrolyte Suction Tool in Removal and Addition Processing, Proceedings of the 2nd Symposium for International Cooperation on Micro and Precision Electrical Machining, 2015.
Wataru Natsu, Hiroshi Nagoya, Atsushi Sato: Research on Shape Generation with Environment-responsive ECM by Using Electrolyte Suction Tool, Proceedings of the 16th International Machine Tool Engineers' Conference, p.200, 2014.
Liming Shu, Yande Liang, Wataru Natsu: Experimental study of effect of machining surface roughness on wetting characteristics, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.95-100, 2014.
Dahai Mi, Wataru Natsu: Simulation on Machining Characteristics of Wire ECM Process, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.58-62, 2014.
Koki Yamaguchi, Wataru Natsu: Research on Tool-wear Elimination and Accuracy Improvement with Raised Low-level Voltage in Wire ECM, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.55-57, 2014.
Katsuaki Endo, Wataru Natsu: Proposal and Verification of Electrolyte Suction Tool with Function of Gap-width Detection, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.49-54, 2014.
Masashi Machida, Wataru Natsu: Understanding Behavior of Working Fluid Movement in Micro EDM through flow analysis, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.35-38, 2014.
Hui Wang, Zuyuan Yu, Huilan Yu, Qingwang Ding, Jianzhong Li, Wataru Natsu: Study of the Relationship between the Surface Quality of Hot-embossing Products and Micro-molds, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.101-104, 2014.
Tomohiko Ichikawa, Wataru Natsu, Zuyuan Yu: Study on Factors Affecting Machining Characteristic in Micro-EDM applied with Ultrasonic Vibration to Machining fluid, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.24-28, 2014.
Hui Wang, Zuyuan Yu, Wataru Natsu: Study on tool wear in case of group-hole drilling in Micro-EDM, Proceedings of the 1st Symposium for International Cooperation on Micro and Precision Electrical Machining, pp.11-15, 2014.
Tomonori Ota, Naoki Shibuya, Wataru Natsu: Study on Turning Characteristics of Tungsten Carbide Alloy with Electrolyte Jet, Proceedings of International Symposium on Green Manufacturing and Applications, 2011.
Naoki Shibuya, Yukihiro Ito, Wataru Natsu: Research on ECM Conditions for Micro-pin Fabrication of Tungsten Carbide Alloy, Proceedings of International Symposium on Green Manufacturing and Applications, 2011.
Wataru Natsu, Hisashi Nakayama, Zuyuan Yu: Improvement of ECM Machining Characteristics by Applying Ultrasonic Vibration, Proceedings of International Symposium on Green Manufacturing and Applications, 2011.
Wataru Natsu, Hideo Kameyama: Development of educational contents and international collaboration for standardization education in TUAT MOT school, Proceedings of ICES Workshop and WSC Academic Day 2011, pp.110-124, 2011.
Yasushi Takeo, Wataru Natsu: Development of Evaluation Method for Measurement Skill Training, Proceedings of International Symposium on Standardization Education and Research 2011, pp.130-145, 2011.
Wataru Natsu, Yukihiro Ito: Specification Proposal for Shape Measurement of Large-size Substrates, Proceedings of International Symposium on Standardization Education and Research 2010, pp.32-44, 2010.
Yasuhiko Kawabe, Andy Palmer, Wataru Natsu: Importance of Standardization for Die and Mould Based on Global Vehicle Parts Business Analysis, Proceedings of International Symposium on Standardization Education and Research 2010, pp.104-113, 2010.
Yasushi Takeo, Wataru Natsu: Education and Evaluation of Measurement Skill with Correlation between Proficiency and Viewpoint, Proceedings of International Symposium on Standardization Education and Research 2010, pp.144-155, 2010.
Domestic Conference Papers
Ye Chen, Wataru Natsu: A Method to Enhance Depth-to-Diameter Ratio of Micro-hole Drilled with EDM Using Pressure Difference at Hole Entrance, 2024年度精密工学会秋季大会学術講演会講演論文集, pp.181-182, 2024.
Guodong Li, Ye Chen, Wataru Natsu: The influence of planetary movement of tool electrode on bubble flushing effect in micro hole drilling with EDM, 2024年度精密工学会秋季大会学術講演会講演論文集, pp.179-180, 2024.
Lianming Du, Wataru Natsu: Drilling micro-deep-holes with combined EDM and ECM using low concentration electrolyte solution as working fluid, 2024年度精密工学会秋季大会学術講演会講演論文集, pp.174-175, 2024.
Qingrong Zhang, Wataru Natsu: Electrochemical micromachining with pulse width shortened by adjusting the phase difference of pulse driving signals, 2024年度精密工学会秋季大会学術講演会講演論文集, pp.172-173, 2024.
Kaisong Chen, Hongping Luo, Qingrong Zhang, Wataru Natsu: Proposal of Electrochemical Machining with Electrolyte Confines by Porous Ball without Contacting Workpiece, 2024年度精密工学会春季大会学術講演会講演論文集, pp.600-601, 2024.
Jing Li, Wataru Natsu, Guixian Liu: Simulation of the influence of the tool electrode vibrating with dual ultrasonic frequency in ECM, 2024年度精密工学会春季大会学術講演会講演論文集, pp.598-599, 2024.
Qingrong Zhang, Wataru Natsu: Study on machining characteristics of electrochemical machining using bipolar pulses and auxiliary electrode, 2024年度精密工学会春季大会学術講演会講演論文集, pp.596-597, 2024.
Qingrong Zhang, Wataru Natsu: Analysis of hydrogen bubble distribution and its effect on current density in bipolar pulsed ECM using COMSOL Multiphysics, COMSOL Simulations Week 2023 Proceedings, 2023.
Kaisong Chen，Hongping Luo, Qingrong Zhang, Wataru Natsu: Simulation of electrolyte velocity caused by hydrogen generation in ECM with peak-changed voltage pulses, COMSOL Simulations Week 2023 Proceedings, 2023.
Qingrong Zhang, Wataru Natsu: Simulating effect bubbles generated during negative pulse period on machining current density in ECM using bipolar pulses and auxiliary electrode, 電気加工学会全国大会（2023）講演論文集, pp.23-24, 2023.
Ye Chen, Wataru Natsu: Study on debris behavior in inter-electrode area and its influence on electrode feed in micro-hole drilling, 2023年度精密工学会秋季大会学術講演会講演論文集, pp.292-293, 2023.
Zelin Wang, Ye Chen, Masaki Daiku, Wataru Natsu: Development of a New ECM Device Based on Ballpoint Pen Structure Design, 2023年度精密工学会春季大会学術講演会講演論文集, pp.150-151, 2023.
Ye Chen, Wataru Natsu: Investigating Adhesion Phenomenon of Debris during Micro Hole Drilling with EDM, 2023年度精密工学会春季大会学術講演会講演論文集, pp.120-121, 2023.
Ye Chen, Wataru Natsu: Observation of debris in the inter-electrode area during micro EDM drilling, 電気加工学会全国大会（2022）講演論文集, pp.39-40, 2022.
Ye Chen, Wataru Natsu: Consideration of flusing effect caused by bubble movement in micro EDM Drilling through direction observation of inter-electrode area, 2022年度精密工学会秋季大会学術講演会講演論文集, pp.3-4, 2022.
Jiankang Wang, Wataru Natsu: Metal marking by using stray-corrosion-free ECM method with a porous solid ball used as the electrolyte absorption material, 2022年度精密工学会秋季大会学術講演会講演論文集, pp.10-11, 2022.
王建康?夏 恒: Influence factors of the ECM process by using Maifan stone balls to limit the electrolyte distribution areas, 電気加工学会全国大会（2020）講演論文集、pp.53-56, 2020.
王建康?夏 恒: Exploratory study about limitation of electrolyte contact area by using porous solids in ECM process, 2020年度精密工学会秋季大会学術講演会講演論文集、pp.210-211, 2020.
Guodong Li, W. Natsu: Clarification oｆ single discharge process based on the observation by needle electrodes, 2019年度精密工学会秋季大会学術講演会講演論文集, pp.134-135, 2019.
G. Li, W. Natsu, Z. Yu: Influence of debris concentration and bubble escaping speed on discharge characteristic in micro EDM drilling, 電気加工学会全国大会（2018）講演論文集, pp.41-44, 2018.
G. Li, W. Natsu, Z. Yu: Depth dependent characteristics of discharge and their influence on micro deep hole drilling with EDM, 2018年度精密工学会秋季大会学術講演会講演論文集, pp.329-330, 2018.
G. Li, W. Natsu, Z. Yu: Investigation of depth-dependence of bubble behavior in micro deep hole drilling with micro EDM, 2018年度精密工学会春季大会学術講演会講演論文集, pp.887-888, 2018.
Guixian Liu, Saori Hizume, Wataru Natsu: Characteristics Investigation of ECM with Electrolyte Suction Tool with Built-in Auxiliary Anode for Narrowing Current Area, 2018年度精密工学会春季大会学術講演会講演論文集, pp.911-912, 2018.
G. Li, W. Natsu, Z. Yu: Clarification on behavior of bubble and debris in deep hole drilling with micro EDM by high-speed camera, 電気加工学会全国大会（2017）講演論文集, pp.93-96, 2017.
Guixian Liu, Wataru Natsu: Investigation of characteristics of positive bias pulse electrochemical grinding of SiC, 電気加工学会全国大会（2017）講演論文集, pp.33-34, 2017.
G. Li, W. Natsu, Z. Yu: Study on Electrical Discharge Machining for Deep Micro-hole with Atomized Dielectric Jet, 2017年度精密工学会秋季大会学術講演会講演論文集, pp.875-876, 2017.
Luo Hongping, Wataru Natsu: Analysis of current density distribution and its influence on surface roughness at corner area in ECM process, 2017年度精密工学会秋季大会学術講演会講演論文集, pp.111-112, 2017.
Guixian Liu, Wataru Natsu, Daisuke Noda: Study on electrochemical machining characteristics of SiC material, 2017年度精密工学会秋季大会学術講演会講演論文集, pp.107-108, 2017.
G. Li, W. Natsu, Z. Yu: Observation of phenomenon in gap area during the micro hole drilling with micro EDM, 2017年度精密工学会春季大会学術講演会講演論文集, pp.695-696, 2017.
米 大海、夏 恒: Investigation on Pulsed Wire Electrochemical Machining Process Considering Machining Accuracy, 2015年度精密工学会春季大会学術講演会講演論文集, pp.57-58, 2015.
Dahai Mi, Wataru Natsu: Simulation of ECM Process of Holes with Complex Internal Features Using COMSOL Multiphysics, COMSOL Conference Tokyo 2014, 2014.
米 大海、夏 恒: ECM Method for Holes with Complex Internal Features by Using Surface-resistance-adjusted Tool Electrodes, 2014年度精密工学会秋季大会学術講演会講演論文集, pp.247-248, 2014.
Krishna Kumar Saxena, Muhammad Hazak Arshad, Shuhei Kodama, Wataru Natsu, Dominiek Reynaerts: How Can We Control Precision in the ECM Process? 精密工学会誌, 89(6), pp.515-522, doi.org/10.2493/jjspe.89.515, 2023.
Alistair Speidel, Ivan Bisterov, Krishna Kumar Saxena, Mohamed Zubayr, Dominiek Reynaerts, Wataru Natsu, Adam T.Clare: Electrochemical jet manufacturing technology: From fundamentals to application, International Journal of Machine Tools and Manufacture, 180, 103931, doi: 10.1016/j.ijmachtools.2022.103931, 2022.
