Experimental analyses of limit states, stress-strain distribution, defects and failure mechanisms of high-pressure gas pipe

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F18%3AN0000025" target="_blank" >RIV/25797000:_____/18:N0000025 - isvavai.cz</a>
Result on the web
<a href="http://ean2018.kmp.tul.cz/" target="_blank" >http://ean2018.kmp.tul.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Experimental analyses of limit states, stress-strain distribution, defects and failure mechanisms of high-pressure gas pipe
Original language description
The paper contains results and discussion of a comprehensive experimental programme aimed at evaluation of limit states, stress-strain distribution, defects and failure mechanisms of a section of high-pressure gas pipeline taken from an actual line of the nominal diameter DN700, made of an L290NB steel (API 5L X42 steel), operated at maximum pressure 6.1 MPa, with the aim to confirm the service safety and reliability. The experiments were performed using both laboratory specimens machined from the pipe and full scale pipe section of the length 3820 mm. During the full-scale pressure test, the pipe destruction occurred at pressure 12.7 MPa, which is considerably higher than theoretical failure considering the biaxial loading. The pipeline in these conditions was therefore evaluated as safe with a safety factor more than 2. It should be, however, pointed out that the final destructive crack was not initiated in the area of minimum wall thickness as expected, but at the dent with an evident assistance of the surface small cracks. Therefore, an attention should be paid to such defects in reality
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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