Paper
7 June 2002 Output signal prediction of an open-ended waveguide probe when scanning elliptically shaped cracks in metals
Farhad Mazlumi, Hesam Sadeghi, R. Moini
Author Affiliations +
Abstract
We present a modeling technique for the interaction of an elliptical-shape crack in a metal with an open-ended waveguide. The crack is first modeled by an appropriate number of short rectangular waveguides. The mode-matching technique is then used to calculate the scattering matrix of the new segmented waveguide structure. The probe reflection coefficient of the dominant mode is finally calculated for various positions of the crack in order to predict the probe output signal. To demonstrate the accuracy of the model, we consider cracks of various aspect ratios. The comparison of our results with those obtained using a commercial finite element code validates the model introduced in this paper.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Farhad Mazlumi, Hesam Sadeghi, and R. Moini "Output signal prediction of an open-ended waveguide probe when scanning elliptically shaped cracks in metals", Proc. SPIE 4703, Nondestructive Evaluation and Reliability of Micro- and Nanomaterial Systems, (7 June 2002); https://doi.org/10.1117/12.469619
Lens.org Logo
CITATIONS
Cited by 1 scholarly publication.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Waveguides

Scattering

Metals

Matrices

Sensors

Reflection

Quantization

RELATED CONTENT


Back to Top