Elastic wave diffraction of a piston source and its effect on attenuation measurements

1988 ◽  
Author(s):  
Xiaoming Tang ◽  
M. Nafi Toksöz ◽  
C. H. Cheng
Keyword(s):  
Elastic Wave ◽  
Wave Diffraction

Elastic Wave Diffraction Tomography

1990 ◽  
pp. 69-76
Author(s):  
K. J. Langenberg ◽  
T. Kreutter ◽  
K. Mayer ◽  
P. Fellinger ◽  
M. Berger
Keyword(s):  
Elastic Wave ◽  
Wave Diffraction ◽  
Diffraction Tomography

The numerical solution of certain integral equations with non-integrable kernels arising in the theory of crack propagation and elastic wave diffraction

1969 ◽  
Vol 265 (1163) ◽  
pp. 353-381 ◽  
Keyword(s):  
Integral Equation ◽  
Elastic Wave ◽  
Numerical Solution ◽  
Wave Diffraction ◽  
Crack Surface ◽  
Relative Displacement ◽  
Method Of Solution ◽  
Set Up ◽  
Prestressed State ◽  
Numerical Method Of Solution

An infinite elastic medium is initially at rest in a prestressed state of plane- or anti-plane strain. At time t = 0 a plane crack comes into existence which occupies a strip parallel to the y axis and whose width varies in time. Assuming that the components of the traction are known on the crack surface it is possible to set up an integral equation on the area of the crack for the relative displacement across the crack. Although the kernel of this integral equation is non-integrable a method is found for discretizing it and a numerical method of solution is carried out. The results, which in some cases are the solutions of diffraction problems, are presented graphically.

Elastic wave diffraction by a circular cavity

Ultrasonics ◽  
1987 ◽  
Vol 25 (6) ◽  
pp. 335-337
Author(s):  
K.H. Müller
Keyword(s):  
Elastic Wave ◽  
Wave Diffraction ◽  
Circular Cavity
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