The effect of crack morphology on ultrasonic response | Zendy

R. A. Roberts | Zendy

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The effect of crack morphology on ultrasonic response

Author(s) -

R. A. Roberts

Publication year - 2012

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4716225

Subject(s) - ultrasonic sensor , amplitude , planar , acoustics , materials science , signal (programming language) , scattering , boundary element method , optics , mathematical analysis , mathematics , physics , finite element method , computer science , computer graphics (images) , thermodynamics , programming language

A numerical study is presented of the influence of crack morphology on ultrasonic pulse-echo response. Crack morphology is described as a planar crack onto which a random normal direction deviation is imposed with a specified tangential correlation length. Pulse-echo responses for ensembles of random crack profiles are computed as a function of profile height, correlation length, crack length, angle of incidence, wave mode type and signal bandwidth. Mean and variance of signal peak amplitude are compiled. Limits of validity of a Kirchhoff scattering approximation are observed through comparison to boundary element method (BEM) predictions.

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