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. © 2009 Acoustical Society of America.
|Translated title of the contribution||The use of non-collinear mixing for nonlinear ultrasonic detection|
|Pages (from-to)||EL117 - EL122|
|Number of pages||5|
|Journal||Journal of the Acoustical Society of America|
|Publication status||Published - 17 Nov 2009|