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DOI:

2011. . No. 1(51) - Mar 2011, pp. 84-86

Acoustic Characteristics of Metal in the Joint Zone of Rail Electric Contact Welding

A. A. Akhmetova, A. Kh. Vopilkin, A. K. Gurvich

Metal research results and amplitude envelopes of back echo signals in the joint zone of rail electric contact welding are presented. The nature of abnormal amplitude peak of back echo signal in the cross-section of welded rails butt ends joining is disclosed. The question is considered of reasonability of taking into consideration a shape of back echo signals envelops at quality estimation of rails welded joints.
 
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