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A new technique for measuring the acoustic nonlinearity of materials using Rayleigh waves

โœ Scribed by Guoshuang Shui; Jin-Yeon Kim; Jianmin Qu; Yue-Sheng Wang; Laurence J. Jacobs

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
416 KB
Volume
41
Category
Article
ISSN
0963-8695

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โœฆ Synopsis

This note presents a procedure to generate nonlinear Rayleigh surface waves without having to drive the transmitting piezoelectric transducer at high voltages; driving at low voltages limits the excitation of the intrinsic nonlinearity of the piezoelectric transducer element, and enables an efficient measurement procedure to isolate inherent material nonlinearity. The capabilities of this proposed technique are demonstrated by measuring the material nonlinearity of aluminum alloy 2024 and 6061 plates with Rayleigh surface waves.

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