Paper Title:
Evaluation of Linear and Nonlinear Ultrasonic Response of Contacting Surfaces
  Abstract

Linear and nonlinear ultrasonic responses of contacting surfaces were studied based on the contact-pressure dependence of the interfacial stiffnesses. To this purpose, the reflection coefficients of longitudinal and transverse waves were measured for the contacting interface between polished aluminum blocks. The normal and tangential stiffnesses of the interface were then obtained as function of the contact pressure. The reflection coefficients were found to decrease, while the interfacial stiffnesses were found to increase, with the contact pressure. It was also found that the ratio of the tangential to normal stiffness as well as the nonlinearity parameters (ratio of the second harmonic to the squared fundamental amplitudes) could be used as a parameter to characterize the contact condition.

  Info
Periodical
Key Engineering Materials (Volumes 345-346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Pages
1315-1318
DOI
10.4028/www.scientific.net/KEM.345-346.1315
Citation
S. Biwa, S. Hiraiwa, E. Matsumoto, "Evaluation of Linear and Nonlinear Ultrasonic Response of Contacting Surfaces", Key Engineering Materials, Vols. 345-346, pp. 1315-1318, 2007
Online since
August 2007
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Price
$32.00
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