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Proceedings Paper

Three-dimensional ultrasonic imaging
Author(s): Graham H. Thomas; Steve Benson; Susan Crawford
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Paper Abstract

Ultrasonic nondestructive evaluation techniques interrogate components with high frequency acoustic energy. A transducer generates the acoustic energy and converts acoustic energy to electrical signals. The acoustic energy is reflected by abrupt changes in modulus and/or density which can be caused by a defect. Thus defects reflect the ultrasonic energy which is converted into electrical signals. Ultrasonic evaluation typically provides a two dimensional image of internal defects. These images are either planar views (C-scans) or cross-sectional views (B-scans). The planar view is generated by raster scanning an ultrasonic transducer over the component and capturing the amplitude of internal reflections. Depth information is generally ignored. Examples of potential ultrasonic imaging applications are: inside liquid filled tanks, inside the human body, and underwater.

Paper Details

Date Published: 15 November 1993
PDF: 8 pages
Proc. SPIE 1942, Underground and Obscured Object Imaging and Detection, (15 November 1993); doi: 10.1117/12.160344
Show Author Affiliations
Graham H. Thomas, Lawrence Livermore National Lab. (United States)
Steve Benson, Lawrence Livermore National Lab. (United States)
Susan Crawford, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1942:
Underground and Obscured Object Imaging and Detection
Nancy K. Del Grande; Ivan Cindrich; Peter B. Johnson, Editor(s)

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