期刊
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 126, 期 5, 页码 EL117-EL122出版社
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.3231451
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This letter reports on the application of the non-collinear mixing technique to the ultrasonic measurement of material nonlinearity to assess plasticity and fatigue damage. Non-collinear mixing is potentially more attractive for assessing material state than other nonlinear ultrasonic techniques because system nonlinearities can be both independently measured and largely eliminated. Here, measurements made on a sample after plastic deformation and on a sample subjected to low-cycle fatigue show that the non-collinear technique is indeed capable of measuring changes in both, and is therefore a viable inspection technique for these types of material degradation. (C) 2009 Acoustical Society of America
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