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Proceedings Paper

High-temperature ultrasonic sensor for in-situ monitoring of hot isostatic processing
Author(s): David A. Stubbs; Rollie E. Dutton
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Paper Abstract

A sensor has been developed and tested that is capable of emitting and receiving ultrasonic energy at temperatures exceeding 900 degrees C and pressures above 150 MPa. The sensor is based on a unique form of aluminum nitride that retains tits piezoelectric properties at high temperatures. The sensor works with standard ultrasonic pulse-receivers and has demonstrated the capability of measuring workpiece deformation during hot isostatic pressing (HIP). Details of the sensor design, performance, and coupling of the ultrasound to the workpiece are described. Ultrasonic data acquired by the sensor, in situ, during HIP runs and at elevated temperatures in air are presented.

Paper Details

Date Published: 15 November 1996
PDF: 8 pages
Proc. SPIE 2948, Nondestructive Evaluation for Process Control in Manufacturing, (15 November 1996); doi: 10.1117/12.259195
Show Author Affiliations
David A. Stubbs, Univ. of Dayton Research Institute (United States)
Rollie E. Dutton, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 2948:
Nondestructive Evaluation for Process Control in Manufacturing
Richard H. Bossi; Tom Moran, Editor(s)

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