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    Quantitative Assessment of Damage in Buried Polyethylene Pipe Subjected to Land Subsidence

    Source: Journal of Pressure Vessel Technology:;2020:;volume( 143 ):;issue: 004::page 041801-1
    Author:
    Zha, Sixi
    ,
    Lan, Hui-qing
    ,
    Zhang, Hao
    ,
    Wu, Ying
    DOI: 10.1115/1.4049047
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Traditional investigation of polyethylene pipe (PE) subjected to external loads focused only on the study of mechanical behavior or the failure judgment, but could not predict the damage evolution process. In this paper, a quantitative assessment was conducted for the damage of PE pipe subjected to land subsidence. Specifically, a static damage model was proposed based on failure pressure. Then, a finite element model of the buried PE pipe was established to calculate the failure pressure of smooth or notched pipe. Finally, the damage of the buried PE pipes suffering from land subsidence was computed by the damage model. The results show that the failure pressure and damage curves of smooth PE pipe can be divided into increased, steady, and reducing stages. For notched PE pipe, the damage curve can be divided into initial, middle, and late stages when the notch depth coefficient A (notch depth/thickness) equals to 0.1. But when A surpasses 0.2, the damage curve loses its middle stage and rapid damage follows. The threshold of the late stage of damage can be regarded as the last warning value of the damage of PE pipe under land subsidence, which indicates the maintenance measures should be taken immediately. The defects on the pipe accelerated the speed of damage and the late stage of damage evolution.
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      Quantitative Assessment of Damage in Buried Polyethylene Pipe Subjected to Land Subsidence

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4276681
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    contributor authorZha, Sixi
    contributor authorLan, Hui-qing
    contributor authorZhang, Hao
    contributor authorWu, Ying
    date accessioned2022-02-05T21:58:50Z
    date available2022-02-05T21:58:50Z
    date copyright12/17/2020 12:00:00 AM
    date issued2020
    identifier issn0094-9930
    identifier otherpvt_143_04_041801.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276681
    description abstractTraditional investigation of polyethylene pipe (PE) subjected to external loads focused only on the study of mechanical behavior or the failure judgment, but could not predict the damage evolution process. In this paper, a quantitative assessment was conducted for the damage of PE pipe subjected to land subsidence. Specifically, a static damage model was proposed based on failure pressure. Then, a finite element model of the buried PE pipe was established to calculate the failure pressure of smooth or notched pipe. Finally, the damage of the buried PE pipes suffering from land subsidence was computed by the damage model. The results show that the failure pressure and damage curves of smooth PE pipe can be divided into increased, steady, and reducing stages. For notched PE pipe, the damage curve can be divided into initial, middle, and late stages when the notch depth coefficient A (notch depth/thickness) equals to 0.1. But when A surpasses 0.2, the damage curve loses its middle stage and rapid damage follows. The threshold of the late stage of damage can be regarded as the last warning value of the damage of PE pipe under land subsidence, which indicates the maintenance measures should be taken immediately. The defects on the pipe accelerated the speed of damage and the late stage of damage evolution.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleQuantitative Assessment of Damage in Buried Polyethylene Pipe Subjected to Land Subsidence
    typeJournal Paper
    journal volume143
    journal issue4
    journal titleJournal of Pressure Vessel Technology
    identifier doi10.1115/1.4049047
    journal fristpage041801-1
    journal lastpage041801-9
    page9
    treeJournal of Pressure Vessel Technology:;2020:;volume( 143 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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