Analysis and compression testing of laminates optimised for damage tolerance


Rhead, A. T., Butler, R. and Baker, N., 2011. Analysis and compression testing of laminates optimised for damage tolerance. Applied Composite Materials, 18 (1), pp. 85-100.

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    Barely Visible Impact Damage (BVID) can occur when laminated composite material is subject to out-of-plane impact loads and can result in a significant reduction in compressive strength. This paper reports on three compression tests of laminates optimised to maximise damage tolerance. Results from these tests were analysed using a semi-analytical, fracture mechanics based method that predicts the strain below which laminated coupons containing BVID subject to axial compression will not fail. A further experiment was conducted on an artificially delaminated coupon in order to validate the modelling methodology. Results from one of the two optimised stacking sequences considered show an increase of over 40% in Compression After Impact (CAI) strength compared with a baseline configuration. Analysis of results has indicated that CAI strength is dependent to a great extent on damage morphology and stability of damage growth, both of which are functions of laminate stacking sequence.


    Item Type Articles
    CreatorsRhead, A. T., Butler, R. and Baker, N.
    Related URLs
    URLURL Type
    Uncontrolled Keywordsstatic strength,delamination,damage tolerance,compression,impact
    DepartmentsFaculty of Engineering & Design > Mechanical Engineering
    Research CentresAerospace Engineering Research Centre
    Publisher StatementButler_ACM_2011_18_1_85.pdf: The original publication is available at
    ID Code23261
    Additional InformationProceedings paper from 17th International Conference on Composite Materials. 27-31 July 2009. Edinburgh, Scotland. Sp. Iss. SI


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