STP336

    Fracture of Single Crystals under Explosive Loading

    Published: Jan 1963


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    Abstract

    Experiments have been carried out on high-velocity deformation and fracture of metals. Aluminum and copper single crystals and polycrystalline specimens have been subjected to explosive loading and the following results havebeen obtained: (1) Crystal orientation influences the reaction of the metal specimens at pressures of testing above 100 kilobars. The orientation factor causes a redistribution of flow in the reflected tensile wave. (2) The fracture of the specimen is not instantaneous, but times between 104 and 106 sec are required. (3) A measure of the macroscopic theoretical strength of the metal has been obtained. (4) Crack velocities have been calculated. (5) The concept of an energy criterion for fracture, rather than a maximum stress criterion, is implied from the data.


    Author Information:

    Glass, C. M.
    Ballistic Research Laboratories, Aberdeen Proving Ground, Md.

    Golaski, S. K.
    Ballistic Research Laboratories, Aberdeen Proving Ground, Md.

    Misey, J. J.
    Ballistic Research Laboratories, Aberdeen Proving Ground, Md.

    Moss, G. L.
    Ballistic Research Laboratories, Aberdeen Proving Ground, Md.


    Paper ID: STP42035S

    Committee/Subcommittee: D20.10

    DOI: 10.1520/STP42035S


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