A Modal Correlation Coefficient for Detection of Kinks in Mode Shapes

[+] Author and Article Information
M. M. Samman

Stress Engineering Services, Inc., 13800 Westfair East Drive, Houston, TX 77041-1101

J. Vib. Acoust 118(2), 271-272 (Apr 01, 1996) (2 pages) doi:10.1115/1.2889658 History: Received October 01, 1994; Revised April 01, 1995; Online February 26, 2008


A measure of correlation between mode shapes is introduced. This measure is a modification of the standard Modal Assurance Criterion (MAC). The new form, called the Modal Correlation Coefficient (MCC), is more sensitive to the existence of kinks in mode shapes. Its advantages are realized in diagnostic and structural health monitoring applications.

Copyright © 1996 by The American Society of Mechanical Engineers
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