Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Ultrasonic Inspection of Inhomogeneous Welds Simulated by Gaussian Beam Superposition
 Chimenti, D.E.; Thompson, D.O.: Review of Progress in Quantitative Nondestructive Evaluation. 18A New York, London: Plenum Press, 1999 ISBN: 0306461390 pp.11071113 
 Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE) <25, 1998, Snowbird/Utah> 

 English 
 Conference Paper 
 Fraunhofer IZFP () 
 Gaussian wave packet 
Abstract
The presented Gaussian beam superposition technique allows for transducer field calculation in inhomogeneous anisotropic media. Due to the complex cuspidal shapes of the quasishear vertical (qSV) wavefronts in the austentic weld material, only qP and SHwave propagation has been addressed here. The approach uses a paraxial approximation, thus deviations from the exactly calculated field patterns only exist in the regions off the vicinity of the central ray [1,9]. The high computational efficiency of the method using a tenterm Gaussian beam solution is obvious: the calculation time for the results shown in Figs. 2 and 3 is about 20 seconds on a 233 MHz Pentium PC.