Real-Time Measurement of Material Elastic Properties in a High Gamma Irradiation Environment
This paper describes the first noncontact elastic vibration measurements of an object in a high gamma radiation field. Using a laser-coupled resonant ultrasound technique, the vibration modes of an Inconel hollow capped cylinder were measured as the gamma radiation field was increased to 104 Gy/h. This measurement technique allowed shifts in the resonant frequency of the sample's vibration modes to be tracked over a 170 h period. The vibration mode frequencies changed in a manner consistent with the temperature dependence of the elastic stiffness coefficients of the material. These results demonstrate the efficacy of the laser approach for real-time resonant ultrasound measurements in this severely hostile nuclear environment.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - SC
- DOE Contract Number:
- DE-AC07-99ID-13727
- OSTI ID:
- 917071
- Report Number(s):
- INL/JOU-06-11301; NUTYBB; TRN: US0804424
- Journal Information:
- Nuclear Technology, Vol. 159, Issue 2; ISSN 0029-5450
- Country of Publication:
- United States
- Language:
- English
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