Progress toward acoustic emission characterization for continuous monitoring reactor pressure vessels
The purpose of this work is to evaluate the feasibility of detecting and analyzing flaw growth in an operating reactor vessel using acoustic emission (AE) data. A preliminary AE-flaw growth relationship has been developed encompassing six variables. This model relates AE count and energy to fatigue crack driving force ..delta..K. Pattern recognition has been examined as a means of distinguishing crack growth AE from other acoustic signals with encouraging results. The program is moving into hardware implementation of relationships for testing and refinement by monitoring tests in heavy section specimens and subscale structures. The hardware system will become a reactor monitor prototype.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 5396157
- Report Number(s):
- PNL-SA-7746; CONF-7909132-1
- Country of Publication:
- United States
- Language:
- English
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ACOUSTIC EMISSION TESTING
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IRON BASE ALLOYS
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