Guided wave-based identification of multiple cracks in beams using a Bayesian approach
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- 作者：Shuai He ; Ching-Tai Ng ; alex.ng@adelaide.edu.au" class="auth_mail" title="E-mail the corresponding author
- 关键词：Multiple cracks ; Damage identification ; Bayesian statistical framework ; Bayesian model class selection ; Guided waves ; Spectral finite element ; Mode conversion
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：84
- 期：part_PA
- 页码：324-345
- 全文大小：3321 K
文摘
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The spectral finite element (SFE) method is proposed to simulate the guided wave propagation in the beam.
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A SFE crack model is proposed to simulate the guided wave mode conversion effect.
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A two-stage Bayesian model updating algorithm is proposed with for the multiple cracks identification.
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The Transitional Markov Chain Monte Carlo method is proposed to improve the efficiency of identification.
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Numerical studies and experimental verification are provided.