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Nondestructive control of the electron beam (EB) welding process by means of acoustic emission (AE)

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4 Author(s)
Crostack, H.-A. ; Dortmund Univ., Germany ; Reuss, G. ; Bach, F.-W. ; Honekamp, E.

Process control by means of acoustic emission is successfully applied during EB-welding. Defects can be detected and localised. Different localisation algorithms are presented. Especially the localisation method independent of sound velocity is discussed thoroughly. AE-source localisation depends on the measured arrival time intervals strongly. Therefore different methods to estimate these differences like cross correlation or the use of trigger levels were investigated

Published in:

Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE  (Volume:4 )

Date of Conference:

31 Aug-4 Sep 1998