STP1128

    Damage Characterization for a Solid Propellant by an Energetic Approach

    Published: Jan 1992


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    Abstract

    An experimental approach is proposed to provide a damage variable for solid rocket propellant. This technique employs cyclic tests to measure an energetic quantity which fulfills the necessary cumulative properties. Basically, the proposed damage variable is defined from measuring the irreversible energy loss, which is dissipated in the dewetting process of particles from the elastomeric binder. Supported by experiments of this latter material in bulk, it is suspected that the macroscopic viscoelastic behavior is induced by a time-dependent local fracture process of the interface.

    Keywords:

    solid propellant, damage characterization, energy balance, nonlinear viscoelasticity


    Author Information:

    Heuillet, P
    Ph.D. student and research assistant, Universite de Technologie de CompiegnePechiney Research Center, CompiegneGrenoble,

    Neviere, R
    Research engineer and senior engineer, Societe Nationale des Poudres et Explosifs, Centre de Recherches du Bouchet, Vert Le Petit,

    Nottin, JP
    Research engineer and senior engineer, Societe Nationale des Poudres et Explosifs, Centre de Recherches du Bouchet, Vert Le Petit,

    Deneuville, P
    Ph.D. student and research assistant, Universite de Technologie de CompiegnePechiney Research Center, CompiegneGrenoble,


    Paper ID: STP14570S

    Committee/Subcommittee: D30.02

    DOI: 10.1520/STP14570S


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