Observation of wedge waves and their mode transformation by laser ultrasonic technique |
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| Authors: | Jing Jia Zhonghua Shen Lijuan Wang Ling Yuan Faculty of Science Nanjing University of Science Technology Nanjing China |
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| Institution: | Jing Jia,Zhonghua Shen,Lijuan Wang,and Ling Yuan Faculty of Science,Nanjing University of Science and Technology,Nanjing 210094,China |
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| Abstract: | Wedge waves (WWs) in wedges, including their dispersion characteristics and mode transformation, are investigated using the laser ultrasound technique. Pulsed laser excitation and optical deflection beam method for detection are used to record WWs. Numerous WWs are detected by scanning the excitation laser along the wedge tip. Dispersions of WWs are obtained by using the two-dimensional (2D) Fourier transformation method, and different WW orders are revealed on the wedges. Mode transformation is determined ... |
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