Palit Sagar, S and Das, S 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.
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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.
|Uncontrolled Keywords:||Non-linear ultrasonic; Dislocations; Fatigue; Total harmonic distortion; Harmonics|
|Divisions:||Material Science and Technology|
|Deposited By:||INVALID USER|
|Deposited On:||28 Oct 2009 15:19|
|Last Modified:||06 Feb 2012 17:32|
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