Three-dimensional ultrasonic imaging: an aging aircraft nondestructive inspection tool

Graham H. Thomas; Steve Benson; Susan Crawford

doi:10.1117/12.163855

3 December 1993 Three-dimensional ultrasonic imaging: an aging aircraft nondestructive inspection tool

Graham H. Thomas, Steve Benson, Susan Crawford

Proceedings Volume 2001, Nondestructive Inspection of Aging Aircraft; (1993) https://doi.org/10.1117/12.163855
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Ultrasonic nondestructive evaluation is a valuable technique for finding defects in aircraft structures. It can detect unbonds, corrosion damage, and cracks in various aircraft components. Ultrasonic nondestructive evaluation techniques interrogate materials with high frequency acoustic energy. A piezoelectric transducer generates acoustic energy and converts returned acoustic energy into electrical signals which can be processed to identify the reflector. The acoustic energy propagates through the component and is reflected by abrupt changes in modulus and/or density that can be caused by a defect. Ultrasonic nondestructive evaluation typically provides a two dimensional image of internal defects. These images are either a planar view (C-scan) or a cross-sectional view (B-scan) of the component. The planar view is generated by raster scanning an ultrasonic transducer over the area of interest and capturing the peak amplitude of internal reflections. Depth information is generally ignored.

Citation Download Citation

Graham H. Thomas, Steve Benson, and Susan Crawford "Three-dimensional ultrasonic imaging: an aging aircraft nondestructive inspection tool", Proc. SPIE 2001, Nondestructive Inspection of Aging Aircraft, (3 December 1993); https://doi.org/10.1117/12.163855

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