• 781 Citations
  • 16 h-Index
1993 …2019
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Research Output 1993 2019

2019

High surface quality micro machining of monocrystalline diamond by picosecond pulsed laser

Okamoto, Y., Okada, A., Kajitani, A. & Shinonaga, T., Jan 1 2019, In : CIRP Annals.

Research output: Contribution to journalArticle

Pulsed lasers
Surface properties
Diamonds
Machining
Surface roughness

Influence of numerical aperture on molten area formation in fusion micro-welding of glass by picosecond pulsed laser

Ouyang, Z., Okamoto, Y., Ogino, Y., Sakagawa, T. & Okada, A., Apr 1 2019, In : Applied Sciences (Switzerland). 9, 7, 1412.

Research output: Contribution to journalArticle

Open Access
numerical aperture
Pulsed lasers
welding
Molten materials
pulsed lasers
2018
1 Citation (Scopus)

Control of Kerf Width in Multi-wire EDM Slicing of Semiconductors with Circular Section

Okamoto, Y., Ikeda, T., Kurihara, H., Okada, A. & Kido, M., Jan 1 2018, In : Procedia CIRP. 68, p. 100-103 4 p.

Research output: Contribution to journalConference article

Wire
Semiconductor materials
Processing
Electrodes
Ingots
Conductive films
Pulsed lasers
Nanowires
Silver
Polarization
2 Citations (Scopus)

High surface quality welding of aluminum using adjustable ring-mode fiber laser

Maina, M. R., Okamoto, Y., Okada, A., Närhi, M., Kangastupa, J. & Vihinen, J., Aug 1 2018, In : Journal of Materials Processing Technology. 258, p. 180-188 9 p.

Research output: Contribution to journalArticle

Fiber lasers
Laser modes
Aluminum
Surface properties
Welding
1 Citation (Scopus)

Influence of Jet Flushing on Corner Shape Accuracy in Wire EDM

Ebisu, T., Kawata, A., Okamoto, Y., Okada, A. & Kurihara, H., Jan 1 2018, In : Procedia CIRP. 68, p. 104-108 5 p.

Research output: Contribution to journalConference article

Electric discharge machining
Wire
Debris
Hydrodynamics
Flow fields
1 Citation (Scopus)

Influence of Material Property on Thickness of Modified Layer Generated by Large-area Electron Beam

Shinonaga, T., Kimura, Y., Sakai, T. & Okada, A., Jan 1 2018, In : Procedia CIRP. 68, p. 178-183 6 p.

Research output: Contribution to journalConference article

Electron beams
Materials properties
Metals
Heat conduction
Irradiation

Influence of surface state in micro-welding of copper by Nd:YAG laser

Maina, M. R., Okamoto, Y., Inoue, R., Nakashiba, S. I., Okada, A. & Sakagawa, T., Nov 23 2018, In : Applied Sciences (Switzerland). 8, 12, 2364.

Research output: Contribution to journalArticle

Surface states
welding
YAG lasers
Copper
Welding

Magnetic fixtures for enhancement of smoothing effect by electron beam melting

Shinonaga, T., Okada, A., Liu, H. & Kimura, M., Apr 1 2018, In : Journal of Materials Processing Technology. 254, p. 229-237 9 p.

Research output: Contribution to journalArticle

Electron beam melting
Electron beams
Irradiation
Deburring
Evaporation
2017

Cutting performance of boron-doped diamond coated tools in drilling of CFRP

Soldatov, A., Okada, A., Uemura, K. & Ogawa, H., Nov 13 2017.

Research output: Contribution to conferencePaper

Carbon fiber reinforced plastics
Boron
Diamonds
Drilling
Coatings
1 Citation (Scopus)
Conductive films
Pulsed Laser
Nanowires
Silver
Pulsed lasers
Electron beams
Irradiation
Metals

Fundamental study on addition of osteoconductivity to titanium alloy surface by EDM

Shinonaga, T., Iida, Y., Toshimitsu, R. & Okada, A., Nov 1 2017, In : International Journal of Automation Technology. 11, 6, p. 869-877 9 p., ijate001100060869.

Research output: Contribution to journalArticle

Electric discharge machining
Titanium alloys
Bone
Machining
Titanium
4 Citations (Scopus)

Improvement of curved hole EDM drilling performance using suspended ball electrode by workpiece vibration

Okada, A., Yamaguchi, A. & Ota, K., 2017, In : CIRP Annals - Manufacturing Technology. 66, 1, p. 189-192 4 p.

Research output: Contribution to journalArticle

Vibrations (mechanical)
Drilling
Electrodes
Zinc alloys
Metal foil
1 Citation (Scopus)

Influence of nozzle jet flushing on wire breakage in 1st-cut wire edm from start hole

Kawata, A., Okada, A., Okamoto, Y. & Kurihara, H., 2017, Recent Development in Machining, Materials and Mechanical Technologies II - IC3MT 2016. Trans Tech Publications Ltd, Vol. 749 KEM. p. 130-135 6 p. (Key Engineering Materials; vol. 749 KEM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nozzles
Wire
Debris
Electric discharge machining
Flow fields
Pulsed lasers
Carbon steel
Plasmas
Lasers
Processing
Open Access
Electric discharge machining
Wire
Semiconductor materials
1 Citation (Scopus)

Multi-wire EDM slicing of semiconductors with group power supplying method

Okamoto, Y., Ikeda, T., Kurihara, H., Okada, A. & Kido, M., Jan 1 2017, Proceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017. euspen, p. 183-184 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

slicing
supplying
wire
Wire
Semiconductor materials
1 Citation (Scopus)

Study on clarification of large-Area eb irradiation phenomenon by electron track analysis

Kimura, Y., Shinonaga, T. & Okada, A., 2017, Recent Development in Machining, Materials and Mechanical Technologies II - IC3MT 2016. Trans Tech Publications Ltd, Vol. 749 KEM. p. 118-123 6 p. (Key Engineering Materials; vol. 749 KEM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electron beams
Irradiation
Electrons
Analytical models
Metals
Ultrafast lasers
Nanostructures
Titanium
Titanium alloys
Biomaterials
2016
1 Citation (Scopus)

Characteristics of spatter in micro-drilling of metal sheet by pulsed Nd: YAG laser

Okamoto, Y., Yamamoto, H. & Okada, A., Nov 1 2016, In : International Journal of Automation Technology. 10, 6, p. 874-881 8 p.

Research output: Contribution to journalArticle

Sheet metal
Flow of gases
Drilling
Lasers
High speed cameras
3 Citations (Scopus)

Effect of focusing condition on molten area characteristics in micro-welding of borosilicate glass by picosecond pulsed laser

Nordin, I. H. W., Okamoto, Y., Okada, A., Takekuni, T. & Sakagawa, T., May 1 2016, In : Applied Physics A: Materials Science and Processing. 122, 5, 492.

Research output: Contribution to journalArticle

Borosilicate glass
Aberrations
Pulsed lasers
Molten materials
Welding
2 Citations (Scopus)

Effect of wavelength and pulse duration on laser micro-welding of monocrystalline silicon and glass

Nordin, I. H. W., Okamoto, Y., Okada, A., Jiang, H. & Sakagawa, T., Apr 1 2016, In : Applied Physics A: Materials Science and Processing. 122, 4, 400.

Research output: Contribution to journalArticle

Monocrystalline silicon
Laser pulses
Pulsed lasers
Welding
Glass
2 Citations (Scopus)

Evaluation of molten area in micro-welding of monocrystalline silicon and glass

Nordin, I. H. W., Okamoto, Y., Miyamoto, I. & Okada, A., Mar 3 2016, In : Unknown Journal. 114, 1, 012039.

Research output: Contribution to journalArticle

Monocrystalline silicon
Molten materials
Welding
Glass
Pulsed lasers
1 Citation (Scopus)

Formation of Periodic Nanostructures with Femtosecond Laser for Creation of New Functional Biomaterials

Shinonaga, T., Kinoshita, S., Okamoto, Y., Tsukamoto, M. & Okada, A., 2016, Procedia CIRP. Elsevier, Vol. 42. p. 57-61 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ultrashort pulses
Biomaterials
Nanostructures
Titanium
Lasers
4 Citations (Scopus)

High-speed Observation of Thin Wire Movement in Fine Wire EDM

Kamei, T., Okada, A. & Okamoto, Y., 2016, Procedia CIRP. Elsevier, Vol. 42. p. 596-600 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wire
Electrodes
High speed cameras
Tungsten
Machining
16 Citations (Scopus)

Improvement in Surface Characteristics by EDM with Chromium Powder Mixed Fluid

Toshimitsu, R., Okada, A., Kitada, R. & Okamoto, Y., 2016, Procedia CIRP. Elsevier, Vol. 42. p. 231-235 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chromium
Powders
Fluids
Powder metals
Corrosion resistance
7 Citations (Scopus)

Influence of electrical discharge machining parameters on cutting parameters of carbon fiber-reinforced plastic

Habib, S. & Okada, A., Jan 2 2016, In : Machining Science and Technology. 20, 1, p. 99-114 16 p.

Research output: Contribution to journalArticle

Electric discharge machining
Carbon fiber reinforced plastics
Composite materials
Machining
Steel

Influence of Pulse duration on Processing Characteristics of Transparent Conductive Film Containing Silver Nanowires by ns Pulsed Fiber Laser

Oshita, M., Nishi, N., Okamoto, Y., Okada, A., Shinonaga, T. & Sakagawa, T., 2016, Procedia CIRP. Elsevier, Vol. 42. p. 62-66 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Conductive films
Fiber lasers
Pulsed lasers
Nanowires
Surface properties
2 Citations (Scopus)

Study on high efferent micro-deburring by large- Area EB irradiation

Shinonaga, T., Kimura, Y., Okada, A. & Miyoshi, T., 2016, Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016. euspen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Deburring
Electron beams
Irradiation
electron beams
irradiation
16 Citations (Scopus)

Study on the movement of wire electrode during fine wire electrical discharge machining process

Habib, S. & Okada, A., Jan 1 2016, In : Journal of Materials Processing Technology. 227, p. 147-152 6 p.

Research output: Contribution to journalArticle

Electric discharge machining
Machining
Electrode
Wire
Electrodes
Welding
Stainless steel
Lasers
Scanning
Continuous wave lasers
2015

Effect of laser beam intensity distribution in removal processing of ZnO film by nano-second pulsed laser with square section fiber

Nishi, N., Okamoto, Y., Yokoyama, T., Okada, A., Nakashiba, S. I. & Sakagawa, T., Nov 1 2015, In : Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 81, 11, p. 1033-1038 6 p.

Research output: Contribution to journalArticle

Zinc oxide
Pulsed lasers
Oxide films
Laser beams
Lenses
3 Citations (Scopus)

Effect of surrounding gas condition on surface integrity in micro-drilling of SiC by ns pulsed laser

Okamoto, Y., Asako, K., Nishi, N., Sakagawa, T. & Okada, A., Mar 5 2015, (Accepted/In press) In : Applied Physics B: Lasers and Optics.

Research output: Contribution to journalArticle

drilling
integrity
pulsed lasers
gases
silicon carbides
1 Citation (Scopus)

Effects of focusing condition on micro-welding characteristics of borosilicate glass by picosecond pulsed laser

Takekuni, T., Okamoto, Y., Fujiwara, T., Okada, A. & Miyamoto, I., 2015, Key Engineering Materials. Trans Tech Publications Ltd, Vol. 656-657. p. 461-467 7 p. (Key Engineering Materials; vol. 656-657).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Borosilicate glass
Pulsed lasers
Welding
Molten materials
Glass
10 Citations (Scopus)
Electric discharge machining
Wire
Conductive materials
High speed cameras
Video cameras

Film formation mechanism in alumina coating by large-area electron beam irradiation

Takata, M., Shinonaga, T., Okamoto, Y., Okada, A., Inoue, M. & Sano, S., Oct 18 2015, Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electron beams
Alumina
Irradiation
Coatings
Jigs

Fundamental study on curved hole drilling method by EDM with suspended ball electrode

Yamaguchi, A., Okada, A., Miyake, T. & Ikeshima, T., Oct 18 2015, Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Drilling
Machining
Electrodes
Metals
Electric potential

Fundamental study on metal film coating by large-area EB irradiation

Takata, M., Shinonaga, T., Okada, A., Inoue, M. & Sano, S., 2015, Proceedings - ASPE 2015 Annual Meeting. American Society for Precision Engineering, ASPE, p. 595-598 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Irradiation
Coatings
Metals

High-quality and reliable removal method of ZnO by ns pulsed fiber laser with square core optical fiber

Nishi, N., Okamoto, Y., Okada, A., Nakashiba, S. I. & Sakagawa, T., Oct 18 2015, Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fiber lasers
Pulsed lasers
Optical fibers
Masks
Zinc oxide

Investigation of laser micro-drilling method for multi-layered artificial skin

Asako, K., Okamoto, Y., Okada, A., Minagi, S., Maeda, N., Pan, Q., Jin, K. & Nishigawa, G., Oct 18 2015, Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pulse repetition rate
Drilling
Skin
Air permeability
Lasers

Investigation of machining controllabillity in multi-wire EDM slicing with group power supplying method

Suzuki, A., Okamoto, Y., Okada, A., Kurihara, H. & Kido, M., Oct 18 2015, Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Machining
Wire
Monocrystalline silicon
Electrodes
Electric potential

Laser Micro-drilling of Multi-layered Artificial Skin

Okamoto, Y., Asako, K., Okada, A., Minagi, S., Wada, N., Pan, Q., Jin, K. & Nishigawa, G., 2015, In : Proceedings of Lasers in Manufacturing Laser in Manufactring 2015.

Research output: Contribution to journalArticle

Smart laser micro-welding of difficult-to-weld materials for electronic industry

Okamoto, Y., Nishi, N., Nakashiba, S., Sakagawa, T. & Okada, A., 2015, Laser-Based Micro- and Nanoprocessing IX. SPIE, Vol. 9351. 935103

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electronics industry
Welding
welding
aluminum alloys
YAG lasers

Study on applicability of large-area EB irradiation to micro-deburring

Miyoshi, T., Okada, A. & Okamoto, Y., 2015, Key Engineering Materials. Trans Tech Publications Ltd, Vol. 656-657. p. 369-374 6 p. (Key Engineering Materials; vol. 656-657).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Deburring
Electron beams
Irradiation
Metals
Steel

Study on deburring and shape control of stainless steel knife edge by ion beam machining

Tamaoki, T., Okada, A., Uemura, K., Uno, Y. & Takagl, T., May 1 2015, In : Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 81, 5, p. 446-451 6 p.

Research output: Contribution to journalArticle

Deburring
Ion beams
Machining
Stainless steel
Leather

Study on surface characteristics of EDMed surface with nickel powder mixed fluid

Iwasaki, S., Kitada, R., Okada, A. & Okamoto, Y., 2015, Key Engineering Materials. Trans Tech Publications Ltd, Vol. 656-657. p. 375-380 6 p. (Key Engineering Materials; vol. 656-657).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nickel
Powders
Fluids
Metals
Molds
9 Citations (Scopus)

Wire breakage and deflection caused by nozzle jet flushing in wire EDM

Okada, A., Konishi, T., Okamoto, Y. & Kurihara, H., 2015, In : CIRP Annals - Manufacturing Technology. 64, 1, p. 233-236 4 p.

Research output: Contribution to journalArticle

Nozzles
Wire
Debris
Stress concentration
Flow fields