Feasibility Study of Cyclic Pressure Testing Thick-Walled Cylinders
Final rept. on Phase 1
NAVAL ORDNANCE STATION LOUISVILLE KY
Pagination or Media Count:
This study was initiated to investigate the feasibility of cyclic pressure testing thick-walled cylinders using electrohydraulic energy. The primary intended end use is an economical means of cyclic loading Naval Gun Barrels to safely determine their fatigue life. Preliminary examination was conducted on sample sections of a 5-inch gun barrel to verify design of end restraints, parabolic shaper, and reflector. Energy levels of 42 and 52 kilojoules 8,000 and 10,000 volts were used, and pressures in the order of 40, 000 to 68,000 psi were generated. From this data, further tests were conducted with an electrohydraulic equipment manufacturer to examine rapid cycling and pressure measuring equipment. The results obtained substantiate the use of the technique for cyclic pressure testing however, it is considered that additional work is needed to design and produce more reliable components to optimize the process.