Influence of flange, frequency, and liftoff on microwave detection of stress-induced fatigue cracks using open-ended rectangular waveguides

Nasser Qaddoumi; Emarit Ranu; Philip I. Stepanek; Radin Mirshahi; Reza Zoughi; J. David McColskey; Richard A. Livingston

doi:10.1117/12.301525

31 March 1998 Influence of flange, frequency, and liftoff on microwave detection of stress-induced fatigue cracks using open-ended rectangular waveguides

Nasser Qaddoumi, Emarit Ranu, Philip I. Stepanek, Radin Mirshahi, Reza Zoughi, J. David McColskey, Richard A. Livingston

Author Affiliations +

Proceedings Volume 3396, Nondestructive Evaluation of Materials and Composites II; (1998) https://doi.org/10.1117/12.301525
Event: Non-Destructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1998, San Antonio, TX, United States

Abstract

The influence of the waveguide flange, frequency of operation and liftoff on crack detection sensitivity using the dominant mode as well as the higher-order mode approaches are presented. The results indicate that the optimal choice of these parameters can significantly enhance crack detection sensitivity in practical applications.

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Nasser Qaddoumi, Emarit Ranu, Philip I. Stepanek, Radin Mirshahi, Reza Zoughi, J. David McColskey, and Richard A. Livingston "Influence of flange, frequency, and liftoff on microwave detection of stress-induced fatigue cracks using open-ended rectangular waveguides", Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); https://doi.org/10.1117/12.301525

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