Noncontact temperature measurements of hot steel bodies using an electromagnetic acoustic transducer (EMAT)

Conference · Wed Jul 01 00:00:00 EDT 1987

OSTI ID:6085038

Boyd, D M; Sperline, P D

A noncontacting sensor system for measuring the average internal temperature of hot steel objects has been developed. The system uses a pulsed ruby laser for the generation of the acoustic wave and a pulsed Electromagnetic Acoustic Transducer (EMAT) as the receiver in a through-transmission technique. The pulsed EMAT design has been successfully tested to 1300/sup 0/ Celsius on a nine-inch-long stainless steel sample. The system measures the time-of-flight of the acoustic wave, which is coupled with the part dimension to determine the average acoustic velocity. From a calibrated relationship between velocity and temperature, the average sample temperature is determined. 8 refs., 9 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6085038
• Report Number(s): PNL-SA-14791; CONF-870691-3; ON: DE88000560
• Resource Relation: Conference: Review of progress in quantitative NDE, Williamsburg, VA, USA, 21 Jun 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
STEELS
TEMPERATURE MEASUREMENT
ACOUSTIC MEASUREMENTS
TRANSDUCERS
VERY HIGH TEMPERATURE
CARBON STEELS
DATA ACQUISITION SYSTEMS
EXPERIMENTAL DATA
RUBY LASERS
STAINLESS STEELS
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LASERS
NUMERICAL DATA
SOLID STATE LASERS
440300* - Miscellaneous Instruments- (-1989)