Development of femtosecond laser peening technique for improving mechanical properties

• Project/Area Number: 16H04247
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Osaka University
• Principal Investigator: Sano Tomokazu 大阪大学, 工学研究科, 教授 (30314371)
• Co-Investigator(Kenkyū-buntansha): 松田 朋己 大阪大学, 工学研究科, 助教 (30756333) ; 廣瀬 明夫 大阪大学, 工学研究科, 教授 (70144433)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2017: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
• Keywords: フェムト秒レーザピーニング / 機械特性向上 / フェムト秒レーザ駆動衝撃波 / フェムト秒レーザ / レーザピーニング / アルミニウム合金 / ドライレーザピーニング / フェムト秒レーザー駆動衝撃波

Outline of Final Research Achievements

Wide range of applications are expected due to the development of the femtosecond laser peening without a sacrificial overlay under atmospheric conditions. This technique can be applied to the places or parts where use of water is prohibited. This technique realizes dislocation strengthening more than precipitation strengthening, that leads application to weld joints of precipitation-strengthened aluminum alloys. Micro/nano parts in electronic devices or MEMS/NEMS can also be strengthened using this technique.

Academic Significance and Societal Importance of the Research Achievements

フェムト秒レーザピーニングによって疲労特性や硬さといった機械特性が向上すること、特異な微細組織が形成されること、さらに圧縮初期過程ではこれまで予想されなかったような超高速でかつ巨大に変形することの相関関係が明らかになった。さらに、フェムト秒レーザピーニングの最適条件も明らかになり、溶接部のような強度の弱い部位の強化にも成功した。従って、このフェムト秒レーザピーニングは、新しい「生産加工技術」になり得る可能性が示された。

Research Products

• [Int'l Joint Research] University of Nevada, Reno/University of Cincinnati(米国)
• [Int'l Joint Research] University of Ljubljana(スロベニア)
• [Int'l Joint Research] Czech Academy of Sciences(チェコ)
• [Int'l Joint Research] University of Nevada, Reno/University of Cincinnati(米国)
• [Int'l Joint Research] University of Ljubljana(スロベニア)
• [Int'l Joint Research] Czech Academy of Sciences(チェコ)
• [Int'l Joint Research] HiLASE(チェコ)
• [Int'l Joint Research] University of Nevada, Reno(米国)
• [Int'l Joint Research] University of Ljubljana(スロベニア)
• [Int'l Joint Research] University of Nevada, Reno(米国)
• [Int'l Joint Research] University of Ljubljana(スロベニア)
• [Journal Article] Improving Fatigue Performance of Laser-Welded 2024-T3 Aluminum Alloy Using Dry Laser Peening (2019)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Yosuke Kawahito, Seiji Katayama, Kazuto Arakawa, Kiyotaka Masaki, Ayumi Shiro, Takahisa Shobu, Yuji Sano
  • Journal Title: Metals Volume: 9 Issue: 11 Pages: 1192-1194
  • DOI: 10.3390/met9111192
  • Peer Reviewed / Open Access
• [Journal Article] Grain refining in weld metal using short-pulsed laser ablation during CW laser welding of 2024-T3 aluminum alloy (2019)
  • Author(s): Masaki Kasuga, Tomokazu Sano, Akio Hirose
  • Journal Title: International Journal of Extreme Manufacturing Volume: 1 Issue: 4 Pages: 045003-045003
  • DOI: 10.1088/2631-7990/ab563a
  • Peer Reviewed / Open Access
• [Journal Article] Femtosecond Laser Peening of Friction Stir Welded 7075-T73 Aluminum Alloys (2018)
  • Author(s): Kawashima Terumasa、Sano Tomokazu、Hirose Akio、Tsutsumi Seiichiro、Masaki Kiyotaka、Arakawa Kazuto、Hori Hisashi
  • Journal Title: Journal of Materials Processing Technology Volume: 262 Pages: 111-122
  • DOI: 10.1016/j.jmatprotec.2018.06.022
  • NAID: 130006259269
  • Peer Reviewed
• [Journal Article] Improvement of corrosion resistance of AA2024-T3 using femtosecond laser peening without protective and confining medium (2018)
  • Author(s): Trdan Uros、Sano Tomokazu、Klobcar Damjan、Sano Yuji、Grum Janez、Sturm Roman
  • Journal Title: Corrosion Science Volume: 143 Pages: 46-55
  • DOI: 10.1016/j.corsci.2018.08.030
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dynamic Thermo-Elasto-Plasticity FE Analysis on Nano- and Femto-second Laser Shock Peenings for a Ferrite Material (2017)
  • Author(s): Seiichiro Tsutsumi, Kazushi Ueda, Reccardo Fincato, and Tomokazu Sano
  • Journal Title: QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY Volume: 35 Issue: 2 Pages: 151s-154s
  • DOI: 10.2207/qjjws.35.151s
  • NAID: 130006329354
  • ISSN: 0288-4771, 2434-8252
  • Peer Reviewed
• [Journal Article] FEMTOSECOND LASER PEENING OF 2024 ALUMINUM ALLOY WITHOUT A SACRIFICIAL OVERLAY UNDER ATMOSPHERIC CONDITIONS (2017)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Ryota Kashiwabara, Tomoki Matsuda, Yutaro Isshiki, Akio Hirose, Seiichiro Tsutsumi, Kazuto Arakawa, Tadafumi Hashimoto, Kiyotaka Masaki, and Yuji Sano
  • Journal Title: Journal of Laser Applications Volume: 29 Issue: 1 Pages: 1-7
  • DOI: 10.2351/1.4967013
  • NAID: 120006352342
  • Peer Reviewed / Open Access
• [Presentation] Dry Laser Peening for Improving Fatigue Properties of Laser Welded 2024-T3 Aluminum Alloy using Femtosecond Laser Pulses (2019)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Yosuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, Yuji Sano
  • Organizer: The 7th Laser Ignition and Giant-microphotonics Conference (LIC2019), Yokohama, Japan
  • Int'l Joint Research / Invited
• [Presentation] Dry Laser Peening for Improving Fatigue Properties of Laser Welded 2024-T3 Aluminum Alloy using Femtosecond Laser Pulses (2019)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Yosuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, Yuji Sano
  • Organizer: The 8th International Congress on Laser Advanced Materials Processing (LAMP2019), Hiroshima, Japan
  • Int'l Joint Research
• [Presentation] Femtosecond laser-driven shock compression of solids and its engineering applications (2019)
  • Author(s): Tomokazu Sano
  • Organizer: International Symposium Fundamentals of Laser Assisted Micro- and Nanotechnologies (FLAMN2019), St. Petersburg, Russia
  • Int'l Joint Research / Invited
• [Presentation] Dry laser peening for improving fatigue properties of weld joints of 2024 aluminum alloys (2019)
  • Author(s): Tomokazu Sano
  • Organizer: The 72nd IIW Annual Assembly and International Conference, Bratislava, Slovakia
  • Int'l Joint Research
• [Presentation] レーザーピーニングのインフラへの適用検討４（水を使用しない新しいレーザーピーニング技術による構造材料の疲労寿命延長） (2019)
  • Author(s): 佐野智一, 佐野雄二, 崎野良比呂, 政木清孝
  • Organizer: 日本機械学会 2019年度年次大会, 秋田大学 手形キャンパス
• [Presentation] Dry laser peening for improving fatigure properties of aluminum alloys (2019)
  • Author(s): Tomokazu Sano
  • Organizer: 2nd European Workshop on Laser Peening and Related Phenomena (LSP Days 2019), Hamburg, Germany
  • Int'l Joint Research / Invited
• [Presentation] Grain refining using pulsed laser ablation during CW laser welding of 2024-T3 aluminum alloy (2019)
  • Author(s): Masaki Kasuga, Tomokazu Sano, Akio Hirose
  • Organizer: 2nd European Workshop on Laser Peening and Related Phenomena (LSP Days 2019), Hamburg, Germany
  • Int'l Joint Research
• [Presentation] Femtosecond laser peening of pure iron (2019)
  • Author(s): Itsuki Nishibata, Tomokazu Sano, Tomoki Matsuda, Akio Hirose
  • Organizer: 2nd European Workshop on Laser Peening and Related Phenomena (LSP Days 2019), Hamburg, Germany
  • Int'l Joint Research
• [Presentation] Improving Fatigue Properties of Friction Stir-Welded/Laser-Welded 2024 Aluminum Alloys Using Dry Laser Peening (2019)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose
  • Organizer: 14th International Aluminium Conference (INALCO), Ito International Research Center, The University of Tokyo, Tokyo, Japan
  • Int'l Joint Research
• [Presentation] Ultrafast Sstructural Behavior in Shock-compressed Iron Probed Using XFEL (2018)
  • Author(s): Tomokazu Sano
  • Organizer: Materials Science & Technology 2018 (MS&T18)
  • Int'l Joint Research
• [Presentation] Dry laser peening for improving fatigue properties of aluminum alloys using femtosecond laser pulses (2018)
  • Author(s): Tomokazu Sano
  • Organizer: Photonics Asia 2018
  • Int'l Joint Research
• [Presentation] フェムト秒レーザアブレーション中の鉄の格子ひずみのXFELによるその場計測 (2018)
  • Author(s): 佐野智一
  • Organizer: 第2回レーザー学会「ユビキタス・パワーレーザー」専門委員会・第2回科学技術交流財団「マイクロ固体フォトニクス」研究会
  • Invited
• [Presentation] A Consideration of the Mechanism of Femtosecond Laser Peening through XRD Study of Single Crystal Aluminum (2018)
  • Author(s): Tomokazu Sano, Terumasa Kawashima, Akio Hirose, Ayumi Shiro, Takahisa Shobu, Yuji Sano
  • Organizer: 7th International Conference on Laser Peening and Related Phenomena
  • Int'l Joint Research
• [Presentation] Dry Laser Peening: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions (2018)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, Yuji Sano
  • Organizer: 7th International Conference on Laser Peening and Related Phenomena
  • Int'l Joint Research
• [Presentation] Investigation of Material Properties of Femtosecond Laser-Peened 2024 Aluminum Alloy without Coating and Plasma Confinement Medium (2018)
  • Author(s): Masaki Kasuga, Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, Yuji Sano
  • Organizer: 7th International Conference on Laser Peening and Related Phenomena
  • Int'l Joint Research
• [Presentation] A New Laser Peening Technique for Improving Fatigue Properties of Metals: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions (2018)
  • Author(s): T. Sano
  • Organizer: 12th International Fatigue Congress (FATIGUE 2018)
  • Int'l Joint Research
• [Presentation] ドライレーザピーニングによるアルミニウム溶接継手の疲労特性向上：放射光X線による非破壊ひずみ計測とXFELによる動的ひずみ計測 (2018)
  • Author(s): 佐野智一
  • Organizer: 社団法人日本材料学会 第335回疲労強度部門委員会・第189回X線材料強度部門委員会「合同部門委員会」
  • Invited
• [Presentation] 新しいレーザピーニング技術 ～犠牲層を用いない大気中で施工可能なドライレーザピーニング～ (2018)
  • Author(s): 佐野智一
  • Organizer: 第89回レーザ加工学会講演
  • Invited
• [Presentation] フェムト秒レーザピーニング処理を施した2024アルミニウム合金の材料特性 (2018)
  • Author(s): 春日仁希, 佐野智一, 詠村嵩之, 廣瀬明夫, 堤成一郎, 政木清孝
  • Organizer: 第89回レーザ加工学会講演会
• [Presentation] Improvement of fatigue properties of friction stir welded 2024 aluminum alloy using femtosecond laser peening (2017)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, Ayumi Shiro, Takahisa Shobu, Hisashi Hori
  • Organizer: 3rd INTERNATIONAL CONFERENCE ON FRICTION BASED PROCESSES (ICFP2017)
  • Int'l Joint Research
• [Presentation] Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions for Improving Fatigue Properties of Laser-welded and FSWed 2024 Aluminum Alloys (2017)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Hisashi Hori, Kiyotaka Masaki, Ayumi Shiro, Takahisa Shobu
  • Organizer: Materials Science & Technology 2017 (MS&T17)
  • Int'l Joint Research
• [Presentation] Improvement of Fatigue Properties of Friction Stir Welded 7075-T73 Aluminum Alloy Using Femtosecond Laser Peening (2017)
  • Author(s): Terumasa Kawashima, Tomokazu Sano, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, Hisashi Hori
  • Organizer: Materials Science & Technology 2017 (MS&T17)
  • Int'l Joint Research
• [Presentation] DRY LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions (2017)
  • Author(s): T. Sano
  • Organizer: OSA Laser Congress 2017
  • Int'l Joint Research / Invited
• [Presentation] A NEW LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions (2017)
  • Author(s): T. Sano
  • Organizer: 13th International Conference on Shot Peening
  • Int'l Joint Research
• [Presentation] アルミニウム合金7075の摩擦攪拌接合継手のフェムト秒レーザピーニング (2017)
  • Author(s): 川嶋光将, 佐野智一, 廣瀬明夫, 堤成一郎, 政木清孝, 堀久司
  • Organizer: （一社）溶接学会平成29年度秋季全国大会
• [Presentation] DRY LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions for Improving Fatigue Properties of Weld Joints (2017)
  • Author(s): T. Sano
  • Organizer: 70th IIW Annual Assembly and International Conference
  • Int'l Joint Research
• [Presentation] 超短パルスレーザー駆動衝撃波が拓く新しい材料科学・工学 ～新物質創成と機械的特性向上～ (2017)
  • Author(s): 佐野智一
  • Organizer: 第９回レーザー学会「マイクロ固体フォトニクス」専門委員会
  • Invited
• [Presentation] Improving Fatigue Properties of Laser Welded 2024 Aluminum Alloy using Femtosecond Laser Peening (2017)
  • Author(s): Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, Yuji Sano
  • Organizer: The 18th International Symposium on Laser Precision Microfabrication (LPM2017)
  • Int'l Joint Research
• [Presentation] フェムト秒レーザピーニングの基礎と応用 (2017)
  • Author(s): 佐野智一
  • Organizer: LMPシンポジウム2017 レーザ加工技術の基礎・応用と最新動向
  • Place of Presentation: 大阪大学銀杏会館
  • Invited
• [Presentation] フェムト秒レーザピーニングによるアルミニウム合金の疲労特性向上 (2017)
  • Author(s): 佐野智一
  • Organizer: 平成28年度第2回残留ひずみ・応力解析研究会 微細構造解析プラットフォーム第2回放射光利用研究セミナー
  • Place of Presentation: 研究社英語センター大会議室
  • Invited
• [Presentation] Improvement of Fatigue Properties of Laser-welded 2024-T3 Aluminum Alloy Using Femtosecond Laser Peening (2016)
  • Author(s): Takayuki Eimura, Tomokazu Sano, Akio Hirose, Seiichirou Tsutsumi, Masami Mizutani, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, and Yuji Sano
  • Organizer: Materials Science & Technology 2016 (MS&T'16)
  • Place of Presentation: Salt Palace Convention Center, Salt Lake City, USA
  • Year and Date: 2016-10-23
  • Int'l Joint Research
• [Presentation] Femtosecond laser peening of friction stir welded 7075-T73 aluminum alloy (2016)
  • Author(s): Terumasa Kawashima, Tomokazu Sano, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, and Hisashi Hori
  • Organizer: The International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW) 2016
  • Place of Presentation: ホテル阪急エキスポパーク
  • Year and Date: 2016-10-17
  • Int'l Joint Research
• [Presentation] Effects of femtosecond laser peening on fatigue properties of laser-welded 2024 aluminum alloy (2016)
  • Author(s): Takayuki Eimura, Tomokazu Sano, Akio Hirose, Seiichirou Tsutsumi, Masami Mizutani, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, and Yuji Sano
  • Organizer: The International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW) 2016
  • Place of Presentation: ホテル阪急エキスポパーク
  • Year and Date: 2016-10-17
  • Int'l Joint Research
• [Presentation] フェムト秒レーザピーニング処理によるA2024共材FSW継手の平面曲げ疲労特性改善 (2016)
  • Author(s): 政木清孝, 佐野智一, 佐野雄二
  • Organizer: 日本機械学会 M&M2016 材料力学カンファレンス
  • Place of Presentation: 神戸大学
  • Year and Date: 2016-10-08
• [Presentation] 摩擦攪拌接合継手への適用を目指したアルミニウム合金7075のフェムト秒レーザピーニング (2016)
  • Author(s): 川嶋光将, 佐野智一, 廣瀬明夫, 堤成一郎, 政木清孝, 堀久司
  • Organizer: 溶接学会平成28年度秋季全国大会
  • Place of Presentation: 伊香保温泉HOTEL天坊
  • Year and Date: 2016-09-14
• [Presentation] フェムト秒レーザピーニングによる2024アルミニウム合金の疲労特性向上 (2016)
  • Author(s): 詠村嵩之, 松田朋己, 佐野智一, 廣瀬明夫, 堤成一郎, 菖蒲敬久, 城鮎美, 荒河一渡, 政木清孝, 佐野雄二
  • Organizer: 溶接学会平成28年度秋季全国大会
  • Place of Presentation: 伊香保温泉HOTEL天坊
  • Year and Date: 2016-09-14
• [Presentation] Femtosecond laser-peening of 7075-T73 aluminum alloy (2016)
  • Author(s): T. Kawashima, T. Sano, S. Tsutsumi, A. Hirose, and K. Masaki
  • Organizer: 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)
  • Place of Presentation: 京都国際会議場
  • Year and Date: 2016-08-01
  • Int'l Joint Research
• [Presentation] Improvement of fatigue properties of 2024-T3 Aluminum alloy using femtosecond laser-peening (2016)
  • Author(s): T. Eimura, T. Sano, A. Hirose, S. Tsutsumi, K. Masaki, K. Arakawa, and Y. Sano
  • Organizer: 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)
  • Place of Presentation: 京都国際会議場
  • Year and Date: 2016-08-01
  • Int'l Joint Research
• [Presentation] フェムト秒レーザピーニング処理した金属極表層の非破壊残留応力、転位密度評価 (2016)
  • Author(s): 菖蒲敬久, 城鮎美, 安田良, 岩田匠平, 詠村嵩之, 川嶋光将, 佐野智一
  • Organizer: 第50回X線材料強度に関するシンポジウム
  • Place of Presentation: 国立オリンピック記念青少年総合センター
  • Year and Date: 2016-07-21
• [Presentation] Femtosecond laser peening for improvement of fatigue properties of laser welded 2024 aluminum alloy (2016)
  • Author(s): T. Sano, T. Eimura, A. Hirose, S. Tsutsumi, M. Mizutani, Y. Kawahito, S. Katayama, K. Arakawa, A. Shiro, T. Shobu, K. Masaki, Y. Sano
  • Organizer: 69th IIW Annual Assembly and International Conference
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2016-07-10
  • Int'l Joint Research
• [Presentation] Femtosecond laser peening for improvement of fatigue properties of laser welded 2024 aluminum alloy (2016)
  • Author(s): T. Sano, T. Eimura, A. Hirose, S. Tsutsumi, M. Mizutani, Y. Kawahito, S. Katayama, K. Arakawa, A. Shiro, T. Shobu, K. Masaki, Y. Sano
  • Organizer: 10th International Conference on Residual Stresses
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2016-07-03
  • Int'l Joint Research
• [Presentation] アルミニウム合金A2024のレーザ溶接部の機械的特性に及ぼすフェムト秒レーザピーニングの影響 (2016)
  • Author(s): 詠村嵩之, 佐野智一, 廣瀬明夫, 川人洋介, 片山聖二, 堤成一郎, 政木清孝, 佐野雄二
  • Organizer: 第85回レーザ加工学会講演会
  • Place of Presentation: 大阪大学銀杏会館
  • Year and Date: 2016-06-09
• [Presentation] 摩擦攪拌接合継手への適用を目指したアルミニウム合金7075のフェムト秒レーザピーニング (2016)
  • Author(s): 川嶋光将, 佐野智一, 廣瀬明夫, 堤成一郎, 政木清孝, 堀久司
  • Organizer: 第85回レーザ加工学会講演会
  • Place of Presentation: 大阪大学銀杏会館
  • Year and Date: 2016-06-09
• [Presentation] 疲労強度向上を目的としたレーザーピーニング技術に関する数値解析的検討 (2016)
  • Author(s): 堤成一郎, 植田一史, 佐野智一, 崎野良比呂
  • Organizer: 第19回応用力学シンポジウム
  • Place of Presentation: 北海道大学
  • Year and Date: 2016-05-21
• [Presentation] Femtosecond laser peening of 2024 aluminum alloy without sacrificial overlay under atmospheric conditions (2016)
  • Author(s): T. Sano, T. Eimura, R. Kashiwabara, T. Matsuda, A. Hirose, S. Tsutsumi, K. Arakawa, K. Masaki, and Y. Sano
  • Organizer: The Second Smart Laser Processing Conference (SLPC) 2016
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2016-05-17
  • Int'l Joint Research