کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1759079 | 1019263 | 2012 | 8 صفحه PDF | دانلود رایگان |
The effects of localized nonlinearities on the reciprocity principle in the context of ultrasounds and nonlinear elasticity are discussed in this paper. Experiments will be presented to prove that a localized crack in a concrete beam causes a break of reciprocity in the ultrasonic response to a mechanical excitation. The link between non-reciprocity and asymmetry in the nonlinear response will be demonstrated and discussed as a tool for NonDestructive Evaluation.
► We study reciprocity of ultrasonic signals in (non)linear elastic materials.
► We show that reciprocity principle breaks with localized nonlinearities.
► Non reciprocity linearly depends on the relative position scatterer/transducers.
► Break of reciprocity con be exploited in crack detection and location.
Journal: Ultrasonics - Volume 52, Issue 6, August 2012, Pages 712–719