Accession Number : ADA327298

Title :   Constant Critical Strain for Mechanical Failure of Several Particulate Polymer Composite Explosives and Propellants and Other Explosives.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL N J ARMAMENT ENGINEERING DIRECTORATE

Personal Author(s) : Wiegand, Donald A.

PDF Url : ADA327298

Report Date : JUL 1997

Pagination or Media Count : 19

Abstract : The mechanical response in compression of several polymer composite explosives and propellants and two other explosives was determined as a function of temperature and strain rate. The compressive strength (maximum stress) and the apparent modulus increase with decreasing temperature and increasing strain rate, are proportional to each other. While the compressive strength and the modulus vary by about an order of magnitude, the strain at the maximum stress is approximately constant with variations of strain rate and temperature. This approximately constant strain can be used as a criterion for failure, and suggests a critical local strain or displacement for failure.

Descriptors :   *POLYMERS, *EXPLOSIVES, *STRAIN RATE, *PROPELLANTS, *PARTICULATES, *FAILURE(MECHANICS), STRESSES, MECHANICAL PROPERTIES, COMPOSITE MATERIALS, DISPLACEMENT, FRACTURE(MECHANICS), COMPRESSIVE STRENGTH.

Subject Categories : Polymer Chemistry
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE