NDLI: Fundamental aspects in quantitative ultrasonic determination of fracture toughness: the scattering of a single ellipsoidal inhomogeneity

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Fundamental aspects in quantitative ultrasonic determination of fracture toughness: the scattering of a single ellipsoidal inhomogeneity

Content Provider	NASA Technical Reports Server (NTRS)
Author	Fu, L. S. W.
Copyright Year	1982
Description	The scattering of a single ellipsoidal inhomogeneity is studied via an eigenstrain approach. The displacement field is given in terms of volume integrals that involve eigenstrains that are related to mismatch in mass density and that in elastic moduli. The governing equations for these unknown eigenstrains are derived. Agreement with other approaches for the scattering problem is shown. The formulation is general and both the inhomogeneity and the host medium can be anisotrophic. The axisymmetric scattering of an ellipsoidal inhomogeneity in a linear elastic isotropic medium is given as an example. The angular and frequency dependence of the scattered displacement field, the differential and total cross sections are formally given in series expansions for the case of uniformly distributed eigenstrains.
File Size	2451604
Page Count	38
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830003237
Archival Resource Key	ark:/13960/t08w87p5j
Language	English
Publisher Date	1982-10-01
Access Restriction	Open
Subject Keyword	Nondestructive Tests Wave Diffraction Geometrical Acoustics Acoustic Scattering Acoustic Emission Modulus of Elasticity Inhomogeneity Fracture Strength Inclusions Microstructure Ultrasonic Flaw Detection Ellipsoids Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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