High-temperature ultrasonic sensor for in-situ monitoring of hot isostatic processing

David A. Stubbs; Rollie E. Dutton

doi:10.1117/12.259195

15 November 1996 High-temperature ultrasonic sensor for in-situ monitoring of hot isostatic processing

David A. Stubbs, Rollie E. Dutton

Proceedings Volume 2948, Nondestructive Evaluation for Process Control in Manufacturing; (1996) https://doi.org/10.1117/12.259195
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

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.

Citation Download Citation

David A. Stubbs and Rollie E. Dutton "High-temperature ultrasonic sensor for in-situ monitoring of hot isostatic processing", Proc. SPIE 2948, Nondestructive Evaluation for Process Control in Manufacturing, (15 November 1996); https://doi.org/10.1117/12.259195

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