USE OF FERMAT'S PRINCIPLE TO AID THE INTERPRETATION OF THE ULTRASONIC INSPECTION OF ANISOTROPIC WELDS

Inspection of austenitic welds is particularly difficult because the materials tend to form anisotropic grains resulting in an inhomogeneous structure whose specific properties are unknown. A reliable method of ultrasonic NDE would remove the need for radiography, reducing inspection time and cost....

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Main Authors: Connolly, G D, Lowe, M J S, Rokhlin, S I, Temple, J A G
Format: Conference Proceeding
Language:English
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Lowe, M J S
Rokhlin, S I
Temple, J A G
description Inspection of austenitic welds is particularly difficult because the materials tend to form anisotropic grains resulting in an inhomogeneous structure whose specific properties are unknown. A reliable method of ultrasonic NDE would remove the need for radiography, reducing inspection time and cost. In this paper, an established weld model is transformed into 'Fermat space' using a developed ray-tracing algorithm, where a previously anisotropic and inhomogeneous material appears to be uniformly isotropic and homogeneous when viewed from a predetermined location. This transformation process is explained, and properties of this new space are introduced.
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title USE OF FERMAT'S PRINCIPLE TO AID THE INTERPRETATION OF THE ULTRASONIC INSPECTION OF ANISOTROPIC WELDS
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