EFFECTS OF CRACK MORPHOLOGY AND CLOSURE ON ULTRASONIC RESPONSE | Zendy

R. A. Roberts | Zendy; Donald O. Thompson | Zendy; Dale E. Chimenti | Zendy

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EFFECTS OF CRACK MORPHOLOGY AND CLOSURE ON ULTRASONIC RESPONSE

Author(s) -

R. A. Roberts,

Donald O. Thompson,

Dale E. Chimenti

Publication year - 2009

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 - 10.1063/1.3114125

Subject(s) - ultrasonic sensor , materials science , signal (programming language) , planar , acoustics , closure (psychology) , amplitude , morphology (biology) , crack closure , structural engineering , composite material , computer science , engineering , optics , fracture mechanics , geology , physics , paleontology , computer graphics (images) , economics , market economy , programming language

Progress is reported on the development of tools for the study of the influence of crack morphology and closure on ultrasonic inspection response. An in‐situ phased array sector scan is described for the monitoring of crack responses under load, and results are presented showing the anticipated dependence of signal amplitude on crack closure. Acoustic microscopy mapping of actual crack morphology is outlined. A measurement model is presented for prediction of responses using the measured crack morphology as input. Results are shown demonstrating the reduction in inspection signal amplitude arising from the deviation of measured crack morphology from the ideal planar geometry.

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