Volume 9, Issue 1 (March 1987)

    Deformation of a Metal-Matrix Tensile Coupon with a Central Slot: An Experimental Study

    CODEN: CTROAD

      Format Pages Price  
    PDF Version 7 $25   ADD TO CART


    Abstract

    A metal-matrix specimen was investigated using high-sensitivity moire interferometry. The specimen was a 6-ply [0/±45]s boron-aluminum tensile coupon with a central slot. In-plane displacement fields were analyzed at various load levels from 15 to 95% of the failure load. Normal and shear strains were determined from displacement gradients. Highly localized plastic slip zones occurred in the ductile aluminum matrix tangent to the ends of the slot. Shear strains in the slip zone were an order of magnitude greater than the largest normal strains in the specimen. The shear-strain concentration factor γxyff rose dramatically with the onset of plastic slip and continued to rise gradually with load to 95% of the failure load. Upon unloading, shear strains in the slip zone remained precariously high. The maximum normal strain occurred at the end of the slot, where the normal-strain concentration factor ϵyff diminished as the load increased.


    Author Information:

    Joh, D
    Professor, assistant professor, and graduate assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Post, D
    Professor, assistant professor, and graduate assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Jo, J
    Professor, assistant professor, and graduate assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Czarnek, R
    Professor, assistant professor, and graduate assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Guo, Y
    Professor, assistant professor, and graduate assistants, Virginia Polytechnic Institute and State University, Blacksburg, VA


    Stock #: CTR10420J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10420J

    ASTM International is a member of CrossRef.

    Author
    Title Deformation of a Metal-Matrix Tensile Coupon with a Central Slot: An Experimental Study
    Symposium , 0000-00-00
    Committee D30