A Fracture Test Method for Mode I Fracture Of Thin Metal Materials

    Volume 24, Issue 5 (September 1996)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 4


    Cotterell, B
    Visiting professor, School of Mechanical and Production Engineering, Nanyang Technological University,

    Sim, MC
    Matcor Technology & Services Pte. Ltd.,

    Amrutharaj, G
    Graduate student and associate professor, National University of Singapore,

    Teoh, SH
    Graduate student and associate professor, National University of Singapore,

    (Received 8 May 1995; accepted 22 April 1996)

    Abstract

    A method of testing Mode I K dominated fractures in thin materials using a constrained short center notched tension specimen that is clamped along the loaded edge is described. Poisson's effect induces a lateral tension on the specimen that eliminates the buckling problems associated with thin materials. Furthermore, the stress intensity factor over a significant range of crack lengths and specimen geometries is dependent only on the nominal strain, making the test very suitable for crack-growth experiments under a constant-stress intensity factor. A very accurate approximate expression for the stress intensity factor is presented. A test using this method to measure the crack-growth resistance of Kapton 300HN polyimide film is described.


    Paper ID: JTE11309J

    DOI: 10.1520/JTE11309J

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    Author
    Title A Fracture Test Method for Mode I Fracture Of Thin Metal Materials
    Symposium , 0000-00-00
    Committee E08