Ultrasonic Inspectability Models for Jet Engine Forgings

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1998
Authors
Gray, Timothy
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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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Ultrasonic inspections of axially symmetric forgings, such as those used in the manufacture of jet engine rotating components, are typically performed on so-called “sonic shapes” which have relatively simple geometries. Formation of these sonic shapes typically requires an additional machining step, so significant cost savings can result if the inspections can be reliably performed on forgings whose shapes more closely resemble those of the final machined components. However, compound curvatures of the component surface will cause complicated focusing of the ultrasonic beam within the part which will change the inspection sensitivity to flaws of interest. Analytical models of ultrasonic inspection in complex shaped parts can be used to predict the new sensitivity.

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Thu Jan 01 00:00:00 UTC 1998