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- KAJIWARA Itsuro
- Hokkaido University
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- HOSOYA Naoki
- Shibaura Institute of Technology
Bibliographic Information
- Other Title
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- 203 レーザー加振技術を用いた高周波振動計測に基づくヘルスモニタリング(セッション5 スマート構造システム(1))
Abstract
This paper proposes a vibration testing and health monitoring system based on an impulse response excited by a laser ablation. In conventional vibration testing using an impulse hammer, the excitation force hardly includes high frequency element over tens of kilohertz. High power YAG pulse laser is used in this system for producing an ideal impulse force on structural surface. It is possible to measure high frequency FRF (Frequency Response Function) in this system. And water droplet overlay on the metal is used to adjust the force magnitude in laser excitation. A health monitoring system is constructed by this vibration testing system and damage detecting filter. A microscopic damage of structures can be extracted by detecting fluctuations of high frequency vibration response with this health monitoring system. The vibration testing system is validated by comparing an aluminum block's FRFs that are obtained by laser excitation, impulse hammer and FEM.
Journal
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- The Proceedings of the Symposium on Evaluation and Diagnosis
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The Proceedings of the Symposium on Evaluation and Diagnosis 2009.8 (0), 90-95, 2009
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680867207552
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- NII Article ID
- 110008009912
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- ISSN
- 24243027
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed