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    On the enhancement of bond toughness for Al/epoxy T-peel joints with laser treated substrates

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    Type
    Article
    Authors
    Alfano, Marco cc
    Lubineau, Gilles cc
    Furgiuele, Franco M.
    Paulino, Gláucio Hermogenes
    KAUST Department
    Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-10-25
    Online Publication Date
    2011-10-25
    Print Publication Date
    2011-10
    Permanent link to this record
    http://hdl.handle.net/10754/561895
    
    Metadata
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    Abstract
    The aim of the present work is to quantify the enhancement of bond toughness of Al/epoxy joints associated to substrates laser irradiation. For this reason a potential based cohesive model is employed and cohesive elements are implemented within the finite element framework. The influence of the cohesive properties on the predicted global response of the joints is firstly analyzed. The coupling between adherents plasticity and the cohesive properties is then discussed. It is shown that the global response is mainly affected by cohesive energy (the bond toughness) and cohesive strength. In turn, a proper cost function is defined which quantifies the deviation between numerical and experimental total dissipated energy. Based on a sensitivity analysis of the as-defined cost function, it is shown that an accurate estimation of the bond toughness can be expected from global data. The situation is different for the cohesive strength, whose estimation could require more advanced experimental observations or additional tests. The results reported in the present work allow us to conclude, in a reliable manner, that the laser surface treatment can lead to a large improvement of bond toughness. © 2011 Springer Science+Business Media B.V.
    Citation
    Alfano, M., Lubineau, G., Furgiuele, F., & Paulino, G. H. (2011). On the enhancement of bond toughness for Al/epoxy T-peel joints with laser treated substrates. International Journal of Fracture, 171(2), 139–150. doi:10.1007/s10704-011-9636-4
    Publisher
    Springer Nature
    Journal
    International Journal of Fracture
    DOI
    10.1007/s10704-011-9636-4
    ae974a485f413a2113503eed53cd6c53
    10.1007/s10704-011-9636-4
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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