Two Dimensional Dislocation Sources in Fiber Composite Laminates

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1998
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Green, E. Rhian
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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The method which is frequently adopted in order to determine the response of an elastic body to internal impulsive dislocations is to make use of the representation theorem due to Burridge and Knopoff (see for example Vasudevan and Mal [1]). In this approach, the problem of evaluating the transient response at a specified location due to a point dislocation source is replaced by the problem of evaluating the stress state at the source due to an impulsive point load placed at the measuring location. This technique is particularly useful in the acoustic emission problem where the interest lies in the response measured at the surface of the body, arising from some internal source. In particular, if attention is restricted to evaluating the normal component of displacement at the surface, the response to dislocation sources at any internal point is determined from the solution of the transient response of the body to an impulsive normal load acting at the surface. The representation theorem approach has been applied by Vasudevan and Mal [1] and by Suzuki et.al. [2] in order to evaluate the response of isotropic plates to dislocation sources.

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Thu Jan 01 00:00:00 UTC 1998