Cyclic Pressure Tests of Large Size Pressure Vessels (Progress Report No. 6)
- Southwest Research Institute, San Antonio, TX (United States)
An investigation into the plastic fatigue strength of large size pressure vessels is reported. The vessels under study are of 36 in. I.D. with 2 in. wall thickness and incorporate nozzles of several designs and sizes. The over-all program includes identical pairs of vessels fabricated from A-201, A- 302, and T-1 steels, the work in progress concerns only the A-201 vessels. Static stress analysis of one of the A-201 vessels was performed with Stresscoat to identify regions of critical strain. This is followed by a gage analysis to measure the critical strains resulting from internal pressure. Fatigue testing is carried out on one vessel at a cyclic peak pressure selected to cause failure in approximately 20,000 cycles. The other vessel of the pair is tested under a lower cyclic pressure selected to cause failure in approximately 100,000 cycles. Strain concentration factors determined in the static stress analysis, initial cycling, and results of plastic fatigue tests are correlated with results of related studies at l'Ecole Polytechnique, Lehigh University, and the University of Illinois.
- Research Organization:
- Southwest Research Institute, San Antonio, TX (United States)
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- NSA Number:
- NSA-13-013539
- OSTI ID:
- 4253561
- Report Number(s):
- NYO--2317; Project-No.773-2
- Country of Publication:
- United States
- Language:
- English
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