Fatigue life of organic fiber/epoxy pressure vesselsThe cyclic fatigue life of 10.2-cm-diam cylindrical pressure vessels has been studied. The vessels were made of an organic fiber/epoxy composite. To determine the typical strength distribution of the vessels, 25 of them were internally pressurized until they burst. Twenty-five vessels were then tested under sinusoidal cycling at 1 Hz between 4% and 91% of the mean burst strength. An additional twenty-five vessels were tested between 4% and 91% with a rectangular pressure pulse at 1/3 Hz. A limited number of vessels were tested for stress rupture at the 91% level. Cyclic life was found to depend on time at peak load as well as the number of stress cycles.
Document ID
19760032202
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hamstad, M. A. (Lawrence Livermore National Lab. Livermore, CA, United States)
Chiao, T. T. (Lawrence Livermore National Lab. Livermore, CA, United States)
Patterson, R. G. (California, University Livermore, Calif., United States)