[KSCI] Korea Science Citation Index Service

Ultrasonic Examination of Thick Austenitic Stainless Steel Welds and Factors Influence the Sensitivity

Palaniappan, M. (Quality Assurance Division, Indira Gandhi Centre for Atomic Research(IGCAR))
Subbaratnam, R. (Quality Assurance Division, Indira Gandhi Centre for Atomic Research(IGCAR))

Publication Information

Journal of the Korean Society for Nondestructive Testing / v.23, no.4, 2003 , pp. 372-379 More about this Journal

Abstract

The problems encountered by ultrasonic testing of austenitic stainless steel weld joints are discussed in the paper. Due to low thermal conductivity and the occurrence of single phase between the melting point and the room temperature, coarse and oriented grains are formed in such weld metals more in thick sections. This leads to higher scattering at the grain boundaries and low signal to noise ratio, and extensive beam skewing. Experimental results to understand these problem are explained.

Keywords

austenitic stainless steel; weld metal; repair welding; ultrasonic testing; beam skewing; scattering;

Citations & Related Records

Reference

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3	J. R. Thomilson, A. R. Wagg, and M. J. Whittle, 'Ultrasonic Inspection of Austenitic Welds', British Journal of NDT, pp. 119-127, (May 1980)
4	J. A. Ogilvy, 'The influence of austenitic weld geometry and manufacture on Ultrasonic Inspection of welded joints', British Journal of NDT, pp. 147-156, (May 1987)