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Further testing and development of simulation models for UT inspections of armor
Center for Nondestructive Evaluation Conference Papers, Posters and Presentations
  • Frank J. Margetan, Iowa State University
  • Nathaniel Richter, Pratt & Whitney
  • R. Bruce Thompson, Iowa State University
Document Type
Conference Proceeding
Conference
Review of Progress in Quantitative Nondestructive Evaluation
Publication Date
7-1-2011
Geolocation
(44.4758825, -73.212072)
Abstract
In previous work we introduced an approach for simulating ultrasonic pulse/echo immersion inspections of multi-layer armor panels. Model inputs include the thickness, density, velocity and attenuation of each armor layer, the focal properties of the transducer, and a measured calibration signal. The basic model output is a response-versus-time waveform (ultrasonic A-scan) which includes echoes from all interfaces including those arising from reverberations within layers. Such A-scans can be predicted both for unflawed panels and panels containing a large disbond at any given interface. In this paper we continue our testing of the simulation software, applying it now to an armor panel consisting of SiC ceramic tiles fully embedded in a titanium-alloy matrix. An interesting specimen of such armor became available in which some tile/metal interfaces appear to be well bonded, while others have disbonded areas of various sizes. We compare measured and predicted A-scans for UT inspections, and also demonstrate an extension of the model to predict ultrasonic C-scans over regions containing a small, isolated disbond.
Comments

Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

This article appeared in AIP Conference Proceedings 1430 (2012): 1121–1128 and may be found at http://dx.doi.org/10.1063/1.4716346.

Copyright Owner
American Institute of Physics
Language
en
Citation Information
Frank J. Margetan, Nathaniel Richter and R. Bruce Thompson. "Further testing and development of simulation models for UT inspections of armor" Burlington, VT(2011)
Available at: http://works.bepress.com/rbruce_thompson/33/