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Phased array transducer for billet inspection
Center for Nondestructive Evaluation Conference Papers, Posters and Presentations
  • Ronald A. Roberts, Iowa State University
  • R. Bruce Thompson, Iowa State University
  • Jeffrey A. Umbach, Pratt & Whitney
  • Jon H. Friedl, Pratt & Whitney
Document Type
Conference Proceeding
Review of Progress in Quantitative Nondestructive Evaluation
Publication Date
(32.7153292, -117.1572551)
A phased array transducer design for billet inspection is presented. The transducer sweeps a uniform focus in both depth and angle to assure uniform coverage of the billet volume, particularly at the billet center, where coverage depends critically on transducer alignment. Design concepts are presented which enable the transducer to sweep a tight focus in both depth and angle using 63 discrete time delays. Design concepts and specifications are summarized, and experimental verification of design performance is presented. Data acquisition protocols are discussed enabling the phased array inspection to operate at production speeds.

Copyright 2011 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 1335 (2011): 874–881 and may be found at

Copyright Owner
American Institute of Physics
Citation Information
Ronald A. Roberts, R. Bruce Thompson, Jeffrey A. Umbach and Jon H. Friedl. "Phased array transducer for billet inspection" San Diego, CA(2010)
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