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    Effect of Laser Parameters on Microstructure and Fracture Properties of Repaired Cracks with Micro/Nano Material Addition

    Source: Journal of Manufacturing Science and Engineering:;2020:;volume( 142 ):;issue: 005
    Author:
    Jiang, Wei
    ,
    Li, Yinyin
    ,
    Fang, Guanglei
    ,
    Guo, FengLei
    DOI: 10.1115/1.4046593
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Compact tension specimens with prefabricated cracks are repaired by laser with micro/nano materials added at the crack tip. Different combinations of laser parameters, i.e., laser power, laser spot diameter and heating time, were applied to investigate their effects on the microstructures and fracture properties of repaired specimens. J-integrals were calculated according to the digital image correlation (DIC) measurements, and microstructures were examined using scanning electron microscopy (SEM). When suitable laser parameters were used, homogeneous and compact equiaxed grains with no cracks, pores, and agglomeration are observed in the repaired layer, and the J-integral of repaired specimens is approximately 20% less than that of unrepaired specimen. The paper reveals relations among laser parameters, J-integrals, and microstructures, and provides a guideline for the selection of laser repair parameters.
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      Effect of Laser Parameters on Microstructure and Fracture Properties of Repaired Cracks with Micro/Nano Material Addition

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4274523
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    contributor authorJiang, Wei
    contributor authorLi, Yinyin
    contributor authorFang, Guanglei
    contributor authorGuo, FengLei
    date accessioned2022-02-04T14:51:16Z
    date available2022-02-04T14:51:16Z
    date copyright2020/03/20/
    date issued2020
    identifier issn1087-1357
    identifier othermanu_142_5_054501.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4274523
    description abstractCompact tension specimens with prefabricated cracks are repaired by laser with micro/nano materials added at the crack tip. Different combinations of laser parameters, i.e., laser power, laser spot diameter and heating time, were applied to investigate their effects on the microstructures and fracture properties of repaired specimens. J-integrals were calculated according to the digital image correlation (DIC) measurements, and microstructures were examined using scanning electron microscopy (SEM). When suitable laser parameters were used, homogeneous and compact equiaxed grains with no cracks, pores, and agglomeration are observed in the repaired layer, and the J-integral of repaired specimens is approximately 20% less than that of unrepaired specimen. The paper reveals relations among laser parameters, J-integrals, and microstructures, and provides a guideline for the selection of laser repair parameters.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEffect of Laser Parameters on Microstructure and Fracture Properties of Repaired Cracks with Micro/Nano Material Addition
    typeJournal Paper
    journal volume142
    journal issue5
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.4046593
    page54501
    treeJournal of Manufacturing Science and Engineering:;2020:;volume( 142 ):;issue: 005
    contenttypeFulltext
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