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

Kód výsledku v 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>

Výsledek na webu

<a href="http://ean2018.kmp.tul.cz/" target="_blank" >http://ean2018.kmp.tul.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Experimental Stress Analysis 2018

ISBN

978-80-270-4062-9

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

46-55

Název nakladatele

Czech Society for Mechanics

Místo vydání

Liberec

Místo konání akce

Harrachov

Datum konání akce

5. 6. 2018

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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