Application of MOOT to scattering of elastic waves from compound inclusions
Visscher, W.M.
Los Alamos Scientific Laboratory
1980-01-01
English
It is shown how MOOT (method of optimal truncation, a convergent T-matrix scheme) can be used to calculate elastic wave scattering from compound inclusions, i.e., inclusions which themselves contain flaws - inclusions, voids, or cracks. The general equations are derived, and they are solved for a particular axially-symmetric case - a cracked spherical inclusion immersed in fluid. The crack edge is a circle on the equatorial plane; the crack can extend either inward to the center or outward to the surface of the sphere. Numerical results are given for scattering of acoustic waves from cracked spheres of various materials. Cracked spheres can be fabricated relatively easily, and may be useful in NDE calibrations.
Calibration
Sound Waves
Nondestructive Testing
Testing 420500* -- Engineering-- Materials Testing
Fluids
Mathematical Models
Materials Testing
42 Engineering
Solids
Wave Propagation
Acoustic Testing
Defects
Ultrasonic Testing
Spheres
DARPA/AFML review of progress in quantitative NDE conference, La Jolla, CA, USA, 14 Jul 1980
Article
Pages: 6
Text
rep-no: LA-UR-80-2039
rep-no: CONF-800767-2
grantno: W-7405-ENG-36
osti: 5152954
https://digital.library.unt.edu/ark:/67531/metadc1060490/
ark: ark:/67531/metadc1060490