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    Study on the Failure Mechanism of Burn-Through During In-Service Welding on Gas Pipelines

    Source: Journal of Pressure Vessel Technology:;2019:;volume( 141 ):;issue: 002::page 24501
    Author:
    Qian, Wu
    ,
    Yong, Wang
    ,
    Tao, Han
    ,
    Hongtao, Wang
    ,
    Shiwei, Gu
    ,
    Laihui, Han
    DOI: 10.1115/1.4042461
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: We conclude on the governing mechanism of burn-through and identify the area of highest risk for burn-through occurrence due to a specific combination of loading in this area. In order to investigate the mechanism of burn-through during in-service welding, an exploratory study combining both experiments and finite element simulations was presented. Combined with the theory of high-temperature failure, the initial position of burn-through and its mechanism were discussed. The results showed that burn-through was a kind of intergranular brittle rupture happened at the cooling stage of in-service welding. It started from the partially melted zone, and the cracks expanded along the weakened grain boundaries. When the cracks eventually penetrated to the inner wall, burn-through happened.
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      Study on the Failure Mechanism of Burn-Through During In-Service Welding on Gas Pipelines

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    contributor authorQian, Wu
    contributor authorYong, Wang
    contributor authorTao, Han
    contributor authorHongtao, Wang
    contributor authorShiwei, Gu
    contributor authorLaihui, Han
    date accessioned2019-03-17T10:08:26Z
    date available2019-03-17T10:08:26Z
    date copyright2/21/2019 12:00:00 AM
    date issued2019
    identifier issn0094-9930
    identifier otherpvt_141_02_024501.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4255940
    description abstractWe conclude on the governing mechanism of burn-through and identify the area of highest risk for burn-through occurrence due to a specific combination of loading in this area. In order to investigate the mechanism of burn-through during in-service welding, an exploratory study combining both experiments and finite element simulations was presented. Combined with the theory of high-temperature failure, the initial position of burn-through and its mechanism were discussed. The results showed that burn-through was a kind of intergranular brittle rupture happened at the cooling stage of in-service welding. It started from the partially melted zone, and the cracks expanded along the weakened grain boundaries. When the cracks eventually penetrated to the inner wall, burn-through happened.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleStudy on the Failure Mechanism of Burn-Through During In-Service Welding on Gas Pipelines
    typeJournal Paper
    journal volume141
    journal issue2
    journal titleJournal of Pressure Vessel Technology
    identifier doi10.1115/1.4042461
    journal fristpage24501
    journal lastpage024501-7
    treeJournal of Pressure Vessel Technology:;2019:;volume( 141 ):;issue: 002
    contenttypeFulltext
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