Sagar, S P and Das, SK and Parida , N and Bhattacharya, D K (2006) Non-linear ultrasonic technique to assess fatigue damage in structural steel. Scripta Materialia, 55 (2). pp. 199-202. ISSN 1359-6462

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Abstract

A non-linear ultrasonic technique has been used to assess the fatigue damage in low carbon structural steel. The percentage of total harmonic distortion, which is the ratio of the amplitude of 2nd harmonic and the fundamental, has been introduced as the measurement parameter in this paper. It has also been observed that before crack initiation the 2nd harmonic amplitude is comparable to the fundamental. The results have been analysed in light of the dislocation theory for harmonic generation during material degradation.

Item Type:	Article
Uncontrolled Keywords:	non-linear ultrasonic; dislocations; fatigue; total harmonic distortion; harmonics
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Mrs Chandana Patra
Date Deposited:	02 Jan 2012 12:00
Last Modified:	05 Apr 2016 09:41
URI:	http://cgcri.csircentral.net/id/eprint/57

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