Paper Title:
Calibration of an Impact Device and Its Application to the Normalized Spectral Analysis of Impact-Echo Tests
  Abstract

The objective of this paper is to introduce an impact device made by embedding a piezoelectric sensor into a steel sphere and to develop a calibration method for measuring the impact force. The force-time function of impact can be used to normalize the spectrum obtained from an impact-echo test. Furthermore, an approach was proposed to make the normalized spectrum dimensionless. A new technique based on the dimensionless normalized spectrum is developed to quantitatively evaluate the difference in acoustic impedance at the interface between two dissimilar materials. The impact-echo test results show that the dimensionless normalized spectrum is capable of identifying the degree of the difference in acoustic impedance at the interface between two dissimilar materials.

  Info
Periodical
Key Engineering Materials (Volumes 321-323)
Edited by
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages
381-385
DOI
10.4028/www.scientific.net/KEM.321-323.381
Citation
Y. C. Lin, C. K. Yang, C. C. Cheng, "Calibration of an Impact Device and Its Application to the Normalized Spectral Analysis of Impact-Echo Tests", Key Engineering Materials, Vols. 321-323, pp. 381-385, 2006
Online since
October 2006
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Price
$32.00
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