Time reversal invariance for a nonlinear scatterer exhibiting contact acoustic nonlinearity
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DOI: 10.1016/j.jsv.2017.12.019
Abstract: Abstract The time reversal invariance of an ultrasonic plane wave interacting with a contact interface characterized by a unilateral contact law is investigated analytically and numerically. It is shown analytically that despite the contact nonlinearity,… read more here.
Keywords: contact acoustic; nonlinearity; time; time reversal ... See more keywords
Experimental Verification of Contact Acoustic Nonlinearity at Rough Contact Interfaces
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DOI: 10.3390/ma14112988
Abstract: When a longitudinal wave passes through a contact interface, second harmonic components are generated due to contact acoustic nonlinearity (CAN). The magnitude of the generated second harmonic is related to the contact state of the… read more here.
Keywords: contact acoustic; contact interfaces; acoustic nonlinearity; interface ... See more keywords