Title :
Nondestructive control of the electron beam (EB) welding process by means of acoustic emission (AE)
Author :
Crostack, Horst-Artur ; Reuss, Gerd ; Bach, Friedrich-Wilhelm ; Honekamp, Egbert
Author_Institution :
Dortmund Univ., Germany
fDate :
31 Aug-4 Sep 1998
Abstract :
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
Keywords :
acoustic emission; acoustic radiators; electron beam welding; process control; acoustic emission; acoustic emission source localisation method; cross correlation; defects detection; defects localisation; electron beam welding process; nondestructive control; trigger levels; Acoustic emission; Acoustic propagation; Acoustic signal detection; Acoustic testing; Acoustic transducers; Electron beams; Signal analysis; Thermal spraying; Time measurement; Welding;
Conference_Titel :
Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE
Conference_Location :
Aachen
Print_ISBN :
0-7803-4503-7
DOI :
10.1109/IECON.1998.724093
