2012 Fiscal Year Final Research Report
Non-Contact Vibration Testing Based on Impulse Response Excited by Laser Ablation
| Project/Area Number |
22686025
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Dynamics/Control
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
HOSOYA Naoki 芝浦工業大学, 工学部, 准教授 (40344957)
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| Project Period (FY) |
2010 – 2012
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| Keywords | レーザーアブレーション / プラズマ / 非接触 / 高周波数帯域 / 超小型機器 / 振動試験 |
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| Research Abstract |
I proposed a non-contact vibration testing system based on an impulse response excited by a laser ablation. A high-power Nd: YAG pulse laser is used in this system for producing an ideal impulse force on a structural surface. Therefore, it is possible to measure high frequency frequency response functions (FRF) in this system. I investigated three methods as follows: a method that makes it possible to analyze FRF by only measuring the output (acceleration response) in a laser excitation experiment, a method of acoustic vibration testing using a pulse sound source generated by laser ablation, and a method of a non-contact experimental vibration analysis for underwater structures by pulsed-laser ablation.
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