Presenter Information

A. S. Cheng, Northwestern University

Location

Snowmass Village, CO

Start Date

1-1-1995 12:00 AM

Description

Theoretical analyses relating the reflection coefficient to crack sizes have been considered by many investigators. The general scattering models which describe the relative signal amplitude of an ultrasonic wave scattered from one transducer to another by a void of arbitrary shape or a distribution of cracks in an infinite homogenous isotropic solid have been developed [1–5]. A scattering model of Rayleigh waves from a planar distribution of surface breaking cracks has also been derived [6]. To evaluate the reflection coefficient using that model, the stress intensity factors (SIF) of the cracks under Rayleigh wave stress fields need to be evaluated.

Volume

14B

Chapter

Chapter 7: Materials' Degradation and Specific Applications

Section

Fatigue Damage and Crack Characterization

Pages

1971-1977

DOI

10.1007/978-1-4615-1987-4_252

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Numerical Evaluation fo the Reflection of Rayleigh Waves using a Weight Function Estimation Method

Snowmass Village, CO

Theoretical analyses relating the reflection coefficient to crack sizes have been considered by many investigators. The general scattering models which describe the relative signal amplitude of an ultrasonic wave scattered from one transducer to another by a void of arbitrary shape or a distribution of cracks in an infinite homogenous isotropic solid have been developed [1–5]. A scattering model of Rayleigh waves from a planar distribution of surface breaking cracks has also been derived [6]. To evaluate the reflection coefficient using that model, the stress intensity factors (SIF) of the cracks under Rayleigh wave stress fields need to be evaluated.