Ultrasonic Sensors to Measure Internal Temperature Distribution

Thumbnail Image
Date
1986
Authors
Droney, B.
Mauer, F.
Norton, S.
Wadley, Haydn
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Journal Issue
Is Version Of
Versions
Series
Series
Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

Department
Abstract

The in-process measurement of the internal temperature distribution is an important step toward improved processing of steels. A promising approach is the measurement of ultrasonic velocity, combined with a priori information on heat flow. Reference data on ultrasonic velocity versus temperature have been obtained for austenitic 304 stainless steel and for ferritic AISI 1018 steel. For stainless steel the longitudinal-wave velocity is nearly linear with temperature, with a proportionality constant of about -0.7 meters per second per degree Kelvin. In this paper we review the technical approach being used to ultrasonically determine internal temperature distribution. For this we (1) map the average velocity (hence average temperature) within hot steel samples (using a pulsed-laser driver and an electromagnetic acoustic transducer (EMAT) receiver) and (2) apply a reconstruction model that is based on ultrasonic tomography and utilizes the equations of heat flow.

Comments
Description
Keywords
Citation
DOI
Copyright
Wed Jan 01 00:00:00 UTC 1986