Location

Williamsburg, VA

Start Date

1-1-1986 12:00 AM

Description

The long-wavelength limit of elastic wave scattering by surface cracks in 3d is considered. It is shown that, if the crack is normal to the surface, the scattering can be described by two real parameters, one of which may be taken to be the crack size. The other therefore depends on shape, orientation, and burial depth. Many computed illustrations are given. It is concluded that the amount of information about cracks obtainable by low frequency elastic wave scattering is very limited.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

5A

Chapter

Chapter 1: Conventional Methodologies

Section

Ultrasonics

Pages

43-52

DOI

10.1007/978-1-4615-7763-8_4

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Scattering of Elastic Waves by Small Surface-Breaking or Subsurface Cracks in Three Dimensions

Williamsburg, VA

The long-wavelength limit of elastic wave scattering by surface cracks in 3d is considered. It is shown that, if the crack is normal to the surface, the scattering can be described by two real parameters, one of which may be taken to be the crack size. The other therefore depends on shape, orientation, and burial depth. Many computed illustrations are given. It is concluded that the amount of information about cracks obtainable by low frequency elastic wave scattering is very limited.