Abstract Double-cantilever beam (DCB) and tapered double-cantilever beam (TDCB) specimens are the test configurations most commonly used to measure the fracture toughness of composites and adhesive joints. Strain rates of 1 to 18.47 m/s were applied to the test specimens via high-speed hydraulic test equipment. Because the fracture occurs through the adhesively bonded joints and the cracks grow rapidly, the crack length and beam displacement were recorded by a high-speed camera. An energy range from 0 to 10 J was often observed in the high-strain-rate fracture experiments for nonlinear plastic behavior of the dynamically loaded adhesively bonded DCB and TDCB specimens. The range of energy release rates (fracture energy) for TDCB specimen was 2 to 3 times higher than that of a DCB specimen for all high strain rates. The fracture energy of automotive adhesive joints can be estimated using the experimental results in this study for the fracture toughness ($ G_{IC} $) under high rates of loading. The crack grows as the applied fracture energy exceeds the value of the critical energy release rate ($ G_{IC} $) at the crack tip. The energy release rate was calculated using the fracture mechanics formula. The key fracture mechanics parameter, the fracture energy GIC, was ascertained as a function of the test rate and can be used to assess and model the overall joint performance.


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    Titel :

    High-strain-rate fracture of adhesively bonded composite joints in DCB and TDCB specimens


    Beteiligte:
    Cho, J. U. (Autor:in) / Kinloch, A. (Autor:in) / Blackman, B. (Autor:in) / Rodriguez Sanchez, F. S. (Autor:in) / Han, M. S. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2012




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Klassifikation :

    BKL:    55.20$jStraßenfahrzeugtechnik / 55.20 Straßenfahrzeugtechnik



    High-strain-rate fracture of adhesively bonded composite joints in DCB and TDCB specimens

    Cho, J. U. / Kinloch, A. / Blackman, B. et al. | British Library Online Contents | 2012


    High-strain-rate fracture of adhesively bonded composite joints in DCB and TDCB specimens

    Cho, J. U. / Kinloch, A. / Blackman, B. et al. | Springer Verlag | 2012


    Mode I Fracture Testing of Adhesively Bonded Joints

    Klett, L. B. / Boeman, R. G. / SAE | British Library Conference Proceedings | 1999


    Mode I Fracture Testing of Adhesively Bonded Joints

    Klett, Lynn B. / Boeman, Raymond G. | SAE Technical Papers | 1999


    Mode I fracture testing of adhesively bonded joints

    Klett,L.B. / Boeman,R.G. / Oak Ridge National Laboratory,US | Kraftfahrwesen | 1999