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Transmissibility-based damage detection using angular velocity versus acceleration
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DOI：10.1007/s13349-018-0297-0.png)
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摘要
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This work presents a new damage-detection approach for structural systems that uses the transmissibility and coherence functions of the output angular velocity between two points on the structure, at locations where damage may occur, to generate a damage index as a metric of the changes in the dynamic integrity of the structure. The efficacy of the proposed damage index as compared to that based on the traditional transmissibility of acceleration was tested on straight beams. The experimental and numerical results showed that the new damage index outperformed that based on acceleration by multiple levels in terms of detecting and localizing damage. The experimental results also showed that the proposed damage index using gyroscopes was much less sensitive to the environmental acoustic noises under consideration (65-85 dB) when compared with the damage index based on the acceleration.
Keyword:
Damage index
Vibration
Gyroscope
Accelerometer
Acoustic noise
Coherence
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4.3
论文数:
912
被引数:
2.9K
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