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Proceedings Paper

Real-time portable phase-stepping shearography system for NDE
Author(s): Guowen Lu; Benjamin A. Bard; Shudong Wu
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Paper Abstract

Shearography has been shown to be a powerful tool for on- site non-destructive evaluation applications, especially in aircraft component inspections. However, current commercially available portable shearography systems are qualitative, low signal to noise ratio, and low flaw detection sensitivity. In this paper, we will introduce a real-time, high-resolution, portable, phase-stepping shearography system developed at the Applied Research Lab of The Pennsylvania State University. The system can fit into a wheeled cart and run at a speed of 1-2 inspections/sec for a 7 inch X 5 inch field of view. It provides full quantitative analysis ability and substantially improves flaw detection sensitivity. The applicability and portability of the system to on-site field NDE applications have been tested by a successful field demonstration conducted at a naval air station.

Paper Details

Date Published: 31 March 1998
PDF: 12 pages
Proc. SPIE 3397, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II, (31 March 1998); doi: 10.1117/12.305047
Show Author Affiliations
Guowen Lu, The Pennsylvania State Univ. (United States)
Benjamin A. Bard, The Pennsylvania State Univ. (United States)
Shudong Wu, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 3397:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II
Glenn A. Geithman; Gary E. Georgeson, Editor(s)

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