An Experimental Study of Crack Detection in Annular Components by Ultrasonic Guided Waves

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1998
Authors
Liu, Zongbao
Berthelot, Yves
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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Fatigue cracks have been found in many thick annular components in aging helicopters such as the pitch shaft, rotor hub, and connecting link in H-46 helicopters. Fatigue cracks often occur on the outer and inner surface of the annular components and may lead to a critical failure. To keep aging helicopters in operation, these cracks must be identified and monitored. At the present time, visual inspection is still the major means to detect fatigue cracks in these components. Obviously, there is a need to develop an effective and efficient technique for detecting cracks in thick annular components.

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Thu Jan 01 00:00:00 UTC 1998