Real-time portable phase-stepping shearography system for NDE

Guowen Lu; Benjamin A. Bard; Shudong Wu

doi:10.1117/12.305047

31 March 1998 Real-time portable phase-stepping shearography system for NDE

Guowen Lu, Benjamin A. Bard, Shudong Wu

Proceedings Volume 3397, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II; (1998) https://doi.org/10.1117/12.305047
Event: Non-Destructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1998, San Antonio, TX, United States

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.

Citation Download Citation

Guowen Lu, Benjamin A. Bard, and Shudong Wu "Real-time portable phase-stepping shearography system for NDE", Proc. SPIE 3397, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II, (31 March 1998); https://doi.org/10.1117/12.305047

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