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Title: Simulation of ultrasonic surface waves with multi-Gaussian and point source beam models

In the past decade, multi-Gaussian beam models have been developed to solve many complicated bulk wave propagation problems. However, to date those models have not been extended to simulate the generation of Rayleigh waves. Here we will combine Gaussian beams with an explicit high frequency expression for the Rayleigh wave Green function to produce a three-dimensional multi-Gaussian beam model for the fields radiated from an angle beam transducer mounted on a solid wedge. Simulation results obtained with this model are compared to those of a point source model. It is shown that the multi-Gaussian surface wave beam model agrees well with the point source model while being computationally much more efficient.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Center for NDE, Iowa State University, Ames, IA, 50011, USA and Dept. of Mechanical Eng., Beijing Institute of Technology, Beijing, 100081 (China)
  2. Center for NDE, Iowa State University, Ames, IA, 50011 (United States)
  3. Dept. of Mechanical Eng., Lakehead University, Thunder Bay, ON (Canada)
Publication Date:
OSTI Identifier:
22263811
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1581; Journal Issue: 1; Conference: 40. annual review of progress in quantitative nondestructive evaluation, Baltimore, MD (United States), 21-26 Jul 2013, 10. international conference on Barkhausen noise and micromagnetic testing, Baltimore, MD (United States), 21-26 Jul 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAMS; GREEN FUNCTION; POINT SOURCES; RAYLEIGH WAVES; SIMULATION; SOLIDS; TRANSDUCERS; WAVE PROPAGATION