Characterization of nonlinear ultrasonic effects using the dynamic wavelet fingerprint technique

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• 作者：Hongtao Lv ^{lvhongtao2015@emails.bjut.edu.cn} ; Jingpin Jiao ; ^{jiaojp@bjut.edu.cn} ; Xiangji Meng ^{mxjmoon@emails.bjut.edu.cn} ; Cunfu He ^{hecunfu@bjut.edu.cn} ; Bin Wu ^{wb@bjut.edu.cn}
• 关键词：Dynamic wavelet fingerprint ; Nonlinear ultrasound ; Micro crack ; Harmonic ; Wave-mixing ; Nonlinear fingerprint coefficient
• 刊名：Journal of Sound and Vibration
• 出版年：2017
• 出版时间：17 February 2017
• 年：2017
• 卷：389
• 期：Complete
• 页码：364-379
• 全文大小：3816 K
• 卷排序：389

文摘

A dynamic wavelet fingerprint technique was proposed to extract nonlinear feature. The effects of parameters on the nonlinear feature extraction were investigated. The nonlinear feature was used to quantitative evaluate of micro-cracks. The proposed method was sensitive to micro-cracks.