The high-rate in-plane shear properties of IM7/8552 carbon/epoxy composite material were investigated using a split Hopkinson tension bar featuring constant impedance mountings and semiconductor strain gauges in order to maximize the quality of the load signal. The in-plane shear response up to failure was evaluated using digital image correlation and correction terms for fiber rotation. The data confirmed previously determined experimental data reporting an increase of in-plane shear strength with increasing loading rate: In-plane shear strengths of 135 and 175 MPa were measured for strain rates of 320 and 2600    s 1 , respectively. The results indicate that a Johnson–Cook-type semilogarithmic scaling law can be used to describe the evolution of in-plane shear strength with increasing loading rate.


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    Title :

    High-Rate In-Plane Shear Testing of IM7/8552 Using the Split Hopkinson Tension Bar


    Contributors:

    Published in:

    AIAA Journal ; 59 , 10 ; 4257-4263


    Publication date :

    2021-10-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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