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    The Use of Holographic Phase Shifting in Assessing Unbonds in GRP Plates

    Source: Journal of Engineering Materials and Technology:;1994:;volume( 116 ):;issue: 004::page 545
    Author:
    C. C. Soh
    ,
    Y. Y. Hung
    ,
    H. M. Shang
    ,
    F. S. Chau
    DOI: 10.1115/1.2904326
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: During holographic inspection of glass fiber reinforcesd plastic (GRP) laminated plates, perturbation in the fringe patterns not only reveals the presence of an unbond but also enables estimation of its depth. The accuracy of estimation depends, among other factors, on the accuracy in determining the fringe orders within the boundary of perturbation. This study shows that phase shifting using a single reference beam enables determination of fractional fringe orders at any point on the test surface. When applied to the assessment of the detected unbond, this simple technique gives a more accurate estimation of the unbond depth than conventional holography.
    keyword(s): Plates (structures) , Holography , Inspection , Glass fibers AND Diffraction patterns ,
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      The Use of Holographic Phase Shifting in Assessing Unbonds in GRP Plates

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/113658
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    • Journal of Engineering Materials and Technology

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    contributor authorC. C. Soh
    contributor authorY. Y. Hung
    contributor authorH. M. Shang
    contributor authorF. S. Chau
    date accessioned2017-05-08T23:44:21Z
    date available2017-05-08T23:44:21Z
    date copyrightOctober, 1994
    date issued1994
    identifier issn0094-4289
    identifier otherJEMTA8-26967#545_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/113658
    description abstractDuring holographic inspection of glass fiber reinforcesd plastic (GRP) laminated plates, perturbation in the fringe patterns not only reveals the presence of an unbond but also enables estimation of its depth. The accuracy of estimation depends, among other factors, on the accuracy in determining the fringe orders within the boundary of perturbation. This study shows that phase shifting using a single reference beam enables determination of fractional fringe orders at any point on the test surface. When applied to the assessment of the detected unbond, this simple technique gives a more accurate estimation of the unbond depth than conventional holography.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Use of Holographic Phase Shifting in Assessing Unbonds in GRP Plates
    typeJournal Paper
    journal volume116
    journal issue4
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.2904326
    journal fristpage545
    journal lastpage549
    identifier eissn1528-8889
    keywordsPlates (structures)
    keywordsHolography
    keywordsInspection
    keywordsGlass fibers AND Diffraction patterns
    treeJournal of Engineering Materials and Technology:;1994:;volume( 116 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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