Ultrasonic Testing
rep-no: LA-UR-80-2039
Pages: 6
Solids
DARPA/AFML review of progress in quantitative NDE conference, La Jolla, CA, USA, 14 Jul 1980
Mathematical Models
ark: ark:/67531/metadc1060490
1980-01-01
Defects
Fluids
Testing 420500* -- Engineering-- Materials Testing
Nondestructive Testing
Calibration
Visscher, W.M.
Acoustic Testing
Spheres
Los Alamos Scientific Laboratory
42 Engineering
Wave Propagation
grantno: W-7405-ENG-36
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.
osti: 5152954
Sound Waves
Materials Testing
rep-no: CONF-800767-2
Application of MOOT to scattering of elastic waves from compound inclusions