評価・診断に関するシンポジウム講演論文集
Online ISSN : 2424-3027
会議情報
201 時間周波数解析に基づくモード形状変化の連続モニタリング
増田 新曽根 彰森田 紳也
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会議録・要旨集 フリー

p. 66-70

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This paper concerns a continuous structural health monitoring method to detect and track evolution of damages, which may cause changes in structural dynamics. A short-time Fourier transform-based simple scheme is developed to extract the time-varying mode shapes and the mode curvatures from ambient vibration data measured at multiple points. Numerical experiments show that the proposed monitoring method is capable to identify the changes in mode curvatures, which can indicate the location of the damages as well as time when they occur.

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© 2002 一般社団法人 日本機械学会
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