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ASME STP-PT-043
ASME FLAWED CYLINDER TESTING
Organization:
ASME - ASME International
Year: 2010
Abstract: The effect of flaws with and without cyclic loading was investigated on a composite overwrapped pressure vessel with a non-load sharing polymer liner. Flaws were machined in the structure to four depths and then were cycled for 0, I 0,000 and 20,000 cycles. Finally, the cylinders were hydrostatically burst. These data were compared to a reference burst value of a cylinder without flaws or cycles. The cylinder was 406 mm (16 in.) in diameter by 1020 mm ( 40 in.) long with a service pressure rating of 24.8 MPa (3600 psi).
The lowest burst-to-operating pressure ratio was 2.13, which occurred with the flaws cut 40% into the structure and no cycles. Even with the deepest flaw and cycling, the resulting burst pressure margin would allow safe operation of the pressure vessel over a period of time. The lack of significant additional strength loss with cycling gives a degree of confidence that even if flaws are not found immediately, the risk of a fai lure due to the flaw is low.
The lowest burst-to-operating pressure ratio was 2.13, which occurred with the flaws cut 40% into the structure and no cycles. Even with the deepest flaw and cycling, the resulting burst pressure margin would allow safe operation of the pressure vessel over a period of time. The lack of significant additional strength loss with cycling gives a degree of confidence that even if flaws are not found immediately, the risk of a fai lure due to the flaw is low.
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ASME STP-PT-043
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| contributor author | ASME - ASME International | |
| date accessioned | 2017-09-04T15:37:47Z | |
| date available | 2017-09-04T15:37:47Z | |
| date copyright | 2010.12.17 | |
| date issued | 2010 | |
| identifier other | OVZGGFAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/39707 | |
| description abstract | The effect of flaws with and without cyclic loading was investigated on a composite overwrapped pressure vessel with a non-load sharing polymer liner. Flaws were machined in the structure to four depths and then were cycled for 0, I 0,000 and 20,000 cycles. Finally, the cylinders were hydrostatically burst. These data were compared to a reference burst value of a cylinder without flaws or cycles. The cylinder was 406 mm (16 in.) in diameter by 1020 mm ( 40 in.) long with a service pressure rating of 24.8 MPa (3600 psi). The lowest burst-to-operating pressure ratio was 2.13, which occurred with the flaws cut 40% into the structure and no cycles. Even with the deepest flaw and cycling, the resulting burst pressure margin would allow safe operation of the pressure vessel over a period of time. The lack of significant additional strength loss with cycling gives a degree of confidence that even if flaws are not found immediately, the risk of a fai lure due to the flaw is low. | |
| language | English | |
| title | ASME STP-PT-043 | num |
| title | ASME FLAWED CYLINDER TESTING | en |
| type | standard | |
| page | 74 | |
| status | Active | |
| tree | ASME - ASME International:;2010 | |
| contenttype | fulltext |