Development of femtosecond laser peening technique for improving mechanical properties
Project/Area Number |
16H04247
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Production engineering/Processing studies
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Research Institution | Osaka University |
Principal Investigator |
Sano Tomokazu 大阪大学, 工学研究科, 教授 (30314371)
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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)
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Project Period (FY) |
2016-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥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)
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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.
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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。
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Report
(5 results)
Research Products
(62 results)
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[Journal Article] FEMTOSECOND LASER PEENING OF 2024 ALUMINUM ALLOY WITHOUT A SACRIFICIAL OVERLAY UNDER ATMOSPHERIC CONDITIONS2017
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
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Journal Title
Journal of Laser Applications
Volume: 29
Issue: 1
Pages: 1-7
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Presentation] Dry Laser Peening for Improving Fatigue Properties of Laser Welded 2024-T3 Aluminum Alloy using Femtosecond Laser Pulses2019
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
Related Report
Int'l Joint Research / Invited
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[Presentation] Dry Laser Peening for Improving Fatigue Properties of Laser Welded 2024-T3 Aluminum Alloy using Femtosecond Laser Pulses2019
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
Related Report
Int'l Joint Research
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[Presentation] Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions for Improving Fatigue Properties of Laser-welded and FSWed 2024 Aluminum Alloys2017
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)
Related Report
Int'l Joint Research
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[Presentation] Improving Fatigue Properties of Laser Welded 2024 Aluminum Alloy using Femtosecond Laser Peening2017
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)
Related Report
Int'l Joint Research
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[Presentation] Improvement of Fatigue Properties of Laser-welded 2024-T3 Aluminum Alloy Using Femtosecond Laser Peening2016
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
Related Report
Int'l Joint Research
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[Presentation] Effects of femtosecond laser peening on fatigue properties of laser-welded 2024 aluminum alloy2016
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
Related Report
Int'l Joint Research
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[Presentation] Femtosecond laser peening for improvement of fatigue properties of laser welded 2024 aluminum alloy2016
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
Related Report
Int'l Joint Research
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[Presentation] Femtosecond laser peening for improvement of fatigue properties of laser welded 2024 aluminum alloy2016
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
Related Report
Int'l Joint Research
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