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    Modeling of Oscillations in Partially Penetrated Weld Pools

    Source: Journal of Dynamic Systems, Measurement, and Control:;1990:;volume( 112 ):;issue: 003::page 469
    Author:
    C. D. Sorensen
    ,
    T. W. Eagar
    DOI: 10.1115/1.2896166
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Several investigators have proposed controlling the size and shape of the weld pool based on the weld pool oscillations. This paper proposes two models that could be used to predict the weld pool geometry based on the natural frequency of the pool. The models, one a lumped parameter model and the other a distributed parameter model, included effects of liquid metal density and surface tension along with weld pool geometry. Weld pool oscillations were measured through signal processing of arc voltage and current for stationary gas-tungsten arc (GTA) welds. Welds were performed at different weld voltages and currents on different materials in order to vary width, depth, density, and surface tension. The models developed here were shown to have reasonable agreeement with experimentally measured weld pool resonant frequencies. Also, with geometric conditions similar to those commonly found in GTA weld pools, the different models tend to agree well with one another.
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      Modeling of Oscillations in Partially Penetrated Weld Pools

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    contributor authorC. D. Sorensen
    contributor authorT. W. Eagar
    date accessioned2017-05-08T23:32:13Z
    date available2017-05-08T23:32:13Z
    date copyrightSeptember, 1990
    date issued1990
    identifier issn0022-0434
    identifier otherJDSMAA-26134#469_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/106681
    description abstractSeveral investigators have proposed controlling the size and shape of the weld pool based on the weld pool oscillations. This paper proposes two models that could be used to predict the weld pool geometry based on the natural frequency of the pool. The models, one a lumped parameter model and the other a distributed parameter model, included effects of liquid metal density and surface tension along with weld pool geometry. Weld pool oscillations were measured through signal processing of arc voltage and current for stationary gas-tungsten arc (GTA) welds. Welds were performed at different weld voltages and currents on different materials in order to vary width, depth, density, and surface tension. The models developed here were shown to have reasonable agreeement with experimentally measured weld pool resonant frequencies. Also, with geometric conditions similar to those commonly found in GTA weld pools, the different models tend to agree well with one another.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleModeling of Oscillations in Partially Penetrated Weld Pools
    typeJournal Paper
    journal volume112
    journal issue3
    journal titleJournal of Dynamic Systems, Measurement, and Control
    identifier doi10.1115/1.2896166
    journal fristpage469
    journal lastpage474
    identifier eissn1528-9028
    treeJournal of Dynamic Systems, Measurement, and Control:;1990:;volume( 112 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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