Development of High Frequency Vibration Measurement and HelthMonitoring System Using Contactless Laser Excitation

• Project/Area Number: 22246027
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Dynamics/Control
• Research Institution: Hokkaido University
• Principal Investigator: KAJIWARA Itsuro 北海道大学, 大学院・工学研究院, 教授 (60224416)
• Co-Investigator(Kenkyū-buntansha): NARITA Yoshihiro 北海道大学, 大学院・工学研究院, 教授 (00137407) ; KOBAYASHI Yukinori 北海道大学, 大学院・工学研究院, 教授 (10186778) ; HARADA Hiroyuki 北海道大学, 大学院・工学研究院, 准教授 (90301936) ; EMARU Takanori 北海道大学, 大学院・工学研究院, 准教授 (30440952) ; HOSHINO Yohei 北海道大学, 大学院・工学研究院, 助教 (90374579) ; HONDA Shinya 北海道大学, 大学院・工学研究院, 助教 (90548190)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥42,380,000 (Direct Cost: ¥32,600,000、Indirect Cost: ¥9,780,000); Fiscal Year 2012: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000); Fiscal Year 2011: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000); Fiscal Year 2010: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
• Keywords: 振動解析 / 試験 / レーザーアブレーション / 非接触レーザー加振 / インパルス応答 / 打撃試験 / 周波数応答関数 / パルスレーザー / 振動試験

Research Abstract

This study developed a vibration testing and health monitoring system based on an impulse response excited by a laser ablation. High power Nd: YAG pulse laser was used for producing an ideal impulse force on structural surface. It was possible to measure high frequency vibration responses in this system. A health monitoring system was constructed by this vibration testing system and a damage detecting algorithm.

Research Products

• [Journal Article] Acoustic testing in a very small space based on a point sound source generated by laser-induced breakdown (2013)
  • Author(s): Hosoya, N.
  • Journal Title: Journal of Sound and Vibration Volume: 332
  • Peer Reviewed
• [Journal Article] Vibration testing based on impulse response excited by pulsed-laser ablation: measurement of frequency response function with detection-free input (2012)
  • Author(s): Hosoya, N., Kajiwara, I. and Hosokawa, T
  • Journal Title: Journal of Sound and Vibration Volume: Vol.331 Issue: 6 Pages: 1355-1365
  • DOI: 10.1016/j.jsv.2011.10.034
  • Peer Reviewed
• [Journal Article] Acoustic Vibration Testing in a Micro—Space Based on a Point Source Generated by Laser—Induced Breakdown (2012)
  • Author(s): 細矢直基,永田将希,梶原逸朗
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 78 Issue: 787 Pages: 770-782
  • DOI: 10.1299/kikaic.78.770
  • NAID: 130002051345
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Non-Contact Vibration Tests with Detection-Free Input Based on Pulsed-Laser Ablation for Underwater Structures (2012)
  • Author(s): 細矢直基,矢作修一,梶原逸朗
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 78 Issue: 791 Pages: 2426-2437
  • DOI: 10.1299/kikaic.78.2426
  • NAID: 130002051494
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Self-Sensing and Model-Free Active Vibration Control Based on DVFB (Demonstration of Control Method by Simulation) (2012)
  • Author(s): 矢作修一
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 78 Issue: 793 Pages: 3104-3117
  • DOI: 10.1299/kikaic.78.3104
  • NAID: 130002051552
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Excitation System for Magnetic Resonance Elastography Using Micro MRI (2012)
  • Author(s): Tadano, S.
  • Journal Title: Journal of Biomechanical Science and Engineering Volume: 7 Issue: 4 Pages: 463-474
  • DOI: 10.1299/jbse.7.463
  • NAID: 130003366807
  • ISSN: 1880-9863
  • Peer Reviewed
• [Journal Article] Vibration Testing Based on Impulse Response Excited by Laser Ablation (Input Sensorless FRF Measurements) (2011)
  • Author(s): 細矢直基,梶原逸朗,細川恭彦
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 77 Issue: 773 Pages: 102-113
  • DOI: 10.1299/kikaic.77.102
  • NAID: 130000873721
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Health Monitoring Based on High Frequency Vibration Measurement with Laser (2011)
  • Author(s): 宮本大資,梶原逸朗,細矢直基,西留千晶
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 77 Issue: 777 Pages: 1760-1771
  • DOI: 10.1299/kikaic.77.1760
  • NAID: 130000873617
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Vibration testing based on impulse response excited by laser ablation (2011)
  • Author(s): Kajiwara, I., and Hosoya, N
  • Journal Title: Journal of Sound and Vibration Volume: Vol.330, Issue 21 Issue: 21 Pages: 5045-5057
  • DOI: 10.1016/j.jsv.2010.09.036
  • Peer Reviewed
• [Journal Article] Vibration Test for Membrane Structures Using Non-Contact Laser Excitation System in Vacuum Environment (2011)
  • Author(s): 梶原逸朗,小原賢也
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 77 Issue: 779 Pages: 2662-2672
  • DOI: 10.1299/kikaic.77.2662
  • NAID: 130001055308
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Loose Bolt Detection by High Frequency Vibration Measurement with Non-Contact Laser Excitation (2011)
  • Author(s): Kajiwara, I., Miyamoto, D., Hosoya, N. and Nishidome, C
  • Journal Title: Journal of System Design and Dynamics Volume: 5 Issue: 8 Pages: 1559-1571
  • DOI: 10.1299/jsdd.5.1559
  • NAID: 130002100294
  • ISSN: 1881-3046
  • Peer Reviewed
• [Journal Article] Vibration Measurement for Rotating Disk Using Contactless Laser Excitation (2011)
  • Author(s): 宮本大資,梶原逸朗,細矢直基
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 77 Issue: 784 Pages: 4402-4412
  • DOI: 10.1299/kikaic.77.4402
  • NAID: 130002051245
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Vibration Control Evaluation of Micro Smart Structures with Non-Contact Laser Excitation (2011)
  • Author(s): 中村哲司,朱艶,梶原逸朗,細矢直基
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C Volume: 77 Issue: 784 Pages: 4413-4424
  • DOI: 10.1299/kikaic.77.4413
  • NAID: 130002051246
  • ISSN: 0387-5024, 1884-8354
  • Peer Reviewed
• [Journal Article] Multidisciplinary Design Optimization for Vibration Control of Smart Laminated Composite Structures (2011)
  • Author(s): Shinya Honda, Itsuro Kajiwara, and Yoshihiro Narita
  • Journal Title: Journal of Intelligent Material Systems and Structures Volume: Vol.22 Issue: 13 Pages: 1419-1430
  • DOI: 10.1177/1045389x11414081
  • Peer Reviewed
• [Journal Article] レーザーアブレーションを用いたインパルス加振に基づく振動実験解析法(FRF計測における力計測のセンサレス化) (2011)
  • Author(s): 細矢直基
  • Journal Title: 日本機械学会論文集(C編) Volume: 77 Pages: 102-113
  • Peer Reviewed
• [Journal Article] HDDヘッドアクチュエータのスマート構造化による振動制御 (2011)
  • Author(s): 中村哲司
  • Journal Title: 日本機械学会論文集(C編) Volume: 77 Pages: 847-857
  • Peer Reviewed
• [Journal Article] Remote Motion Control of Micro Vehicles by Two-Way Laser Communication Technology (2010)
  • Author(s): Kajiwara, I., Harada, H., and Nakano, K
  • Journal Title: Journal of System Design and Dynamics Volume: 4 Issue: 6 Pages: 941-952
  • DOI: 10.1299/jsdd.4.941
  • NAID: 130000431780
  • ISSN: 1881-3046
  • Peer Reviewed
• [Journal Article] Remote Motion Control of Micro Vehicles by Two-Way Laser Communication Technology (2010)
  • Author(s): Kajiwara, I.
  • Journal Title: Journal of System Design and Dynamics Volume: 4 Pages: 941-952
  • NAID: 130000431780
  • Peer Reviewed
• [Journal Article] Acoustic testing in a very small space based on a point sound source generated by laser-induced breakdown
  • Author(s): Hosoya, N., Nagata, M. and Kajiwara, I
  • Journal Title: Journal of Sound and Vibration Volume: (in press)
  • Peer Reviewed
• [Presentation] Bolted joint loosening detection by using laser excitation (2013)
  • Author(s): Huda, F., Kajiwara, I., Hosoya, N. andKawamura, S
  • Organizer: Proceedings of SPIE Smart Structures/NDE 2013
  • Place of Presentation: Convention Center, San Diego, CA, USA
  • Year and Date: 2013-03-14
• [Presentation] Bolted joint loosening detection by using laser excitation (2013)
  • Author(s): Kajiwara, I.
  • Organizer: SPIE Smart Structures/NDE 2013
  • Place of Presentation: Town & Country Resort and Convention Center (USA)
• [Presentation] Vibration Control Evaluation of Smart Microstructures with Non-Contact Laser Excitation (2012)
  • Author(s): Kajiwara, I., Nakamura, S., Zhu, Y. and Hosoya, N
  • Organizer: Proceedings on The 11th International Conference on Motion and Vibration Control
  • Place of Presentation: Hilton Ft. Lauderdale Marina Hotel, Fort Lauderdale, FL, USA
  • Year and Date: 2012-10-18
• [Presentation] Multidisciplinary Design Optimization for Smart Micro-Composite and Experimental Validation by Using Laser Excitation Technique (2012)
  • Author(s): Honda, S., Watanabe, K, Narita, Y. and Kajiwara, I
  • Organizer: Proceedings on The 11th International Conference on Motion and Vibration Control
  • Place of Presentation: Hilton Ft. Lauderdale Marina Hotel, Fort auderdale, FL, USA
  • Year and Date: 2012-10-17
• [Presentation] Acoustic testing in a micro-space based on a point source generated by laser-induced breakdown (2012)
  • Author(s): Hosoya, N., Nagata, M. and Kajiwara, I
  • Organizer: Proceedings on ISMA2012 International Conference on Noise and Vibration Engineering
  • Place of Presentation: The Catholic University of Leuven, Leuven, Belgium
  • Year and Date: 2012-09-17
• [Presentation] Acoustic testing in a micro-space based on a point source generated by laser-induced breakdown (2012)
  • Author(s): Hosoya, N.
  • Organizer: ISMA2012 International Conference on Noise and Vibration Engineering
  • Place of Presentation: KU Leuven (Belgium)
• [Presentation] Multidisciplinary Design Optimization for Smart Micro-Composite and Experimental Validation by Using Laser Excitation Technique (2012)
  • Author(s): Honda, S.
  • Organizer: The 11th International Conference on Motion and Vibration Control
  • Place of Presentation: Hilton Ft. Lauderdale Marina (USA)
• [Presentation] Vibration Control Evaluation of Smart Microstructures with Non-Contact Laser Excitation (2012)
  • Author(s): Kajiwara, I.
  • Organizer: The 11th International Conference on Motion and Vibration Control
  • Place of Presentation: Hilton Ft. Lauderdale Marina (USA)
• [Presentation] 非接触レーザー加振技術によるボルト緩み検知に関する研究 (2012)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会 2012年度年次大会
  • Place of Presentation: 金沢大学(石川県)
• [Presentation] 非接触レーザー加振技術を用いたモーメント加振法による周波数応答関数の推定 (2012)
  • Author(s): 細矢直基
  • Organizer: 日本機械学会 2012年度年次大会
  • Place of Presentation: 金沢大学(石川県)
• [Presentation] レーザーアブレーションにより生成されるパルス音源を用いた音響加振法 (2012)
  • Author(s): 細矢直基
  • Organizer: 日本機械学会 2012年度年次大会
  • Place of Presentation: 金沢大学(石川県)
• [Presentation] マイクロスマート複合材の統合最適化とレーザー加振技術による振動制御性能評 (2012)
  • Author(s): 本田真也
  • Organizer: 日本機械学会 Dynamics and Design Conference 2012
  • Place of Presentation: 慶応義塾大学(神奈川県)
• [Presentation] マイクロスマート構造のパッシブ／アクティブ併用振動制御(非接触レーザー加振システムによる制振特性評価) (2012)
  • Author(s): 梶原逸朗
  • Organizer: 第55回自動制御連合講演会
  • Place of Presentation: 京都大学(京都府)
• [Presentation] レーザーブレイクダウンによる非接触加振法を用いた膜構造の振動モード実験 (2012)
  • Author(s): 梶原逸朗
  • Organizer: 第11回評価・診断に関するシンポジウム
  • Place of Presentation: 川崎市産業振興会館(神奈川県)
• [Presentation] 非接触レーザー加振による膜構造の振動モード特性評価 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会 第10回評価・診断に関するシンポジウム
  • Place of Presentation: 大阪市立大学(大阪市)
  • Year and Date: 2011-12-14
• [Presentation] Laser Excitation Vibration Test for Membrane Structures in Vacuum Environment (2011)
  • Author(s): Kajiwara, I. and Obara, K
  • Organizer: The Sixth Japan-Taiwan Workshop on Mechanical and Aerospace Engineering
  • Place of Presentation: Hokkaido University, Hokkaido, Japan
  • Year and Date: 2011-12-07
• [Presentation] Laser Excitation Vibration Test for Membrane structures in Vacuum Environment (2011)
  • Author(s): Kajiwara, I.
  • Organizer: The Sixth Japan-Taiwan Workshop on Mechanical and Aerospace Engineering
  • Place of Presentation: Hokkaido University (Japan)
  • Year and Date: 2011-12-07
• [Presentation] Vibration Testing Method of Smart-Composite with Laser Excitation (2011)
  • Author(s): Honda, S.
  • Organizer: 14th Asia-Pacific Vibration Conference
  • Place of Presentation: The Hong Kong Polytechnic University (China)
  • Year and Date: 2011-12-05
• [Presentation] レーザー加振を用いたスマートマイクロ複合材の振動制御性の評価 (2011)
  • Author(s): 本田真也
  • Organizer: 日本複合材料学会 第36回複合材料シンポジウム
  • Place of Presentation: フォレスト仙台(仙台市)
  • Year and Date: 2011-10-20
• [Presentation] Vibration Test for Membrane structures Using Non-Contact Laser Excitation System in Vacuum Environment (2011)
  • Author(s): Kajiwara, I.
  • Organizer: 22nd International Conference on Adaptive structures Technologies
  • Place of Presentation: Corfu Imperial Hotel (Greece)
  • Year and Date: 2011-10-10
• [Presentation] レーザーブレイクダウンによる点音源を用いた微小空間の音響加振法 (2011)
  • Author(s): 永田将希
  • Organizer: 日本機械学会Dynamics and Design Conference 2011
  • Place of Presentation: 高知工科大学(香美市)
  • Year and Date: 2011-09-09
• [Presentation] レーザーアブレーション加振による水中構造物の非接触振動試験 (2011)
  • Author(s): 矢作修一
  • Organizer: 日本機械学会Dynamics and Design Conference 2011
  • Place of Presentation: 高知工科大学(香美市)
  • Year and Date: 2011-09-08
• [Presentation] レーザー加振技術を用いた回転円板の実稼働時振動計測 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会Dynamics and Design Conference 2011
  • Place of Presentation: 高知工科大学(香美市)
  • Year and Date: 2011-09-07
• [Presentation] 超小型スマート構造の振動制御と非接触レーザー加振による制振特性評価 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会Dynamics and Design Conference 2011
  • Place of Presentation: 高知工科大学(香美市)
  • Year and Date: 2011-09-05
• [Presentation] 非接触レーザー加振システムによる膜構造の振動計測 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会Dynamics and Design Conference 2011
  • Place of Presentation: 高知工科大学(香美市)
  • Year and Date: 2011-09-05
• [Presentation] 非接触レーザー加振/計測技術による超小型スマート構造の制振特性評価 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会 第12回運動と振動の制御シンポジウム
  • Place of Presentation: メルパルク長野(長野市)
  • Year and Date: 2011-06-29
• [Presentation] レーザー加振技術による小型スマート構造の制振特性評価 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会IIP2011情報・知能・精密機器部門講演会
  • Place of Presentation: 東京電機大学,東京
  • Year and Date: 2011-03-22
• [Presentation] 打撃試験を用いた高周波帯域の特性変動検知に基づくボルト緩み診断 (2011)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会関東支部第17期総会講演会
  • Place of Presentation: 慶應義塾大学,神奈川
  • Year and Date: 2011-03-18
• [Presentation] Structural health monitoring by high frequency vibration measurement with non-contact laser excitation (2011)
  • Author(s): Kajiwara, I., Miyamoto, D., Hosoya, N., and Nishidome, C
  • Organizer: Proceedings of SPIE Smart Structures/NDE 2011
  • Place of Presentation: Convention Center, San Diego, CA, USA
  • Year and Date: 2011-03-09
• [Presentation] Structural Health Monitoring by High Frequency Vibration Measurement with Non-contact Laser Excitation (2011)
  • Author(s): Kajiwara, I.
  • Organizer: Proceedings on SPIE Smart Structures/NDE 2011
  • Place of Presentation: Town and Country Resort and Convention Center San Diego, USA
  • Year and Date: 2011-03-09
• [Presentation] Vibration Testing Method of Smart-Composite with Laser Excitation (2011)
  • Author(s): Honda, S., Narita, Y., Kajiwara, I. and Nakamura, S
  • Organizer: Proceedings of The 14th Asia-Pacific Vibration Conference
  • Place of Presentation: The Hong Kong Polytechnic University, Hong Kong
• [Presentation] 振動制御を目的とした複合材積層板のスマート化に関する最適設計 (2010)
  • Author(s): 本田真也
  • Organizer: 第9回最適化シンポジウム
  • Place of Presentation: 愛知県産業労働センターウインクあいち,愛知
  • Year and Date: 2010-12-10
• [Presentation] レーザー加振実験およびFEMによる膜構造の振動特性評価 (2010)
  • Author(s): 梶原逸朗
  • Organizer: 第53回自動制御連合講演会
  • Place of Presentation: 高知城ホール,高知
  • Year and Date: 2010-11-06
• [Presentation] 積層複合材のスマート化による振動制御を目的とした統合最適化 (2010)
  • Author(s): 本田真也
  • Organizer: 第53回自動制御連合講演会
  • Place of Presentation: 高知城ホール,高知
  • Year and Date: 2010-11-06
• [Presentation] Vibration Measurements For Membrane Structures By Using Laser Excitation System (2010)
  • Author(s): Kajiwara, I.
  • Organizer: Proceedings on SMASIS2010 ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Place of Presentation: Doubletree Hotel Philadelphia Philadelphia, USA
  • Year and Date: 2010-10-01
• [Presentation] Multidisciplinary design optimization of actuator arrangements, lay-up configurations and control systems for smart laminated composite structures (2010)
  • Author(s): Honda, S.
  • Organizer: Proceedings on SMASIS2010 ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Place of Presentation: Doubletree Hotel Philadelphia Philadelphia, USA
  • Year and Date: 2010-09-29
• [Presentation] スマート複合材料の振動制御に関する統合最適化 (2010)
  • Author(s): 本田真也
  • Organizer: 日本機械学会第23回計算力学講演会
  • Place of Presentation: 北見工業大学,北海道
  • Year and Date: 2010-09-25
• [Presentation] Input Sensorless FRF Measurement by Laser Excitation System (2010)
  • Author(s): Kajiwara, I.
  • Organizer: Proceedings on ISMA2010 International Conference on Noise and Vibration Engineering
  • Place of Presentation: Katholieke Universiteit Leuven, Belgium
  • Year and Date: 2010-09-20
• [Presentation] レーザー加振技術を用いた高周波帯域の特性変動検知に基づくヘルスモニタリング (2010)
  • Author(s): 梶原逸朗
  • Organizer: 日本機械学会Dynamics and Design Conference 2010
  • Place of Presentation: 同志社大学,京都
  • Year and Date: 2010-09-17
• [Patent(Industrial Property Rights)] 構造物の振動特性の測定方法および振動特性測定装置 (2012)
  • Inventor(s): 梶原逸朗,細矢直基
  • Industrial Property Rights Holder: 梶原逸朗,細矢直基
  • Industrial Property Number: 2012-520295
  • Filing Date: 2012-11-12
• [Patent(Industrial Property Rights)] Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device (2012)
  • Inventor(s): 梶原逸朗,細矢直基
  • Industrial Property Rights Holder: 梶原逸朗,細矢直基
  • Filing Date: 2012-12-14
  • Overseas
• [Patent(Industrial Property Rights)] Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device (2012)
  • Inventor(s): 梶原逸朗,細矢直基
  • Industrial Property Rights Holder: 梶原逸朗,細矢直基
  • Filing Date: 2012-12-17
  • Overseas
• [Patent(Industrial Property Rights)] Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device (2012)
  • Inventor(s): 梶原逸朗，細矢直基
  • Industrial Property Rights Holder: 梶原逸朗，細矢直基
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-12-14
  • Overseas
• [Patent(Industrial Property Rights)] Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device (2012)
  • Inventor(s): 梶原逸朗，細矢直基
  • Industrial Property Rights Holder: 梶原逸朗，細矢直基
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-12-17
  • Overseas
• [Patent(Industrial Property Rights)] 構造物の振動特性の測定方法および振動特性測定装置 (2012)
  • Inventor(s): 梶原逸朗，細矢直基
  • Industrial Property Rights Holder: 梶原逸朗，細矢直基
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-520295
  • Filing Date: 2012-11-12
• [Patent(Industrial Property Rights)] 構造物の振動特性の測定方法および振動特性測定装置 (2011)
  • Inventor(s): 梶原逸朗, 細矢直基
  • Industrial Property Rights Holder: 北海道大学芝浦工業大学
  • Filing Date: 2011-06-15
  • Overseas
• [Patent(Industrial Property Rights)] 非接触式のレーザ加振による構造物の振動特性の測定方法 (2010)
  • Inventor(s): 梶原逸朗、細矢直基
  • Industrial Property Rights Holder: 北海道大学,芝浦工業大学
  • Industrial Property Number: 2010-136185
  • Filing Date: 2010-06-15