Accession Number : ADA328439

Title :   Analysis of Rigid-Body Effects on Bi-Element Targets.

Descriptive Note : Final rept. Oct 93-Nov 94,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Rupert, Nevin L. ; Grace, Fred I.

PDF Url : ADA328439

Report Date : JUL 1997

Pagination or Media Count : 47

Abstract : The use of semi-infinite bi-element targets in depth of penetration (DOP) tests initially arose from the need to rank performance of ceramic materials under ballistic impact. However, since ceramics exhibit complex damage responses, interpretation of DOP results for ceramic/metal target combinations can be difficult and sometimes misleading. Thus, recent work utilized bi-element metal/metal targets to determine additional mechanisms present in the earlier DOP ceramic/metal target responses. This demonstrated that significant target interactions are present in either combination in addition to specific damage mechanisms inherent in the ceramic response. The target interactions considered before included shock-induced transient effects at the front target surface and shock wave reflections at the target/target interface. In current work, which considers low-density/low-strength target materials, it has been found that rigid-body penetration is present and needs to be taken into account also. This report investigates rigid-body penetration. The work explores the previously cited mechanisms through experimental work and includes a model to explain results.

Descriptors :   *DAMAGE ASSESSMENT, *COMPOSITE ARMOR, *BALLISTICS, METALS, IMPACT, INTERACTIONS, INTERFACES, SHOCK WAVES, REFLECTION, TARGETS, DEPTH, CERAMIC MATERIALS, PENETRATION, RESPONSE, LOW DENSITY, RIGIDITY, LOW STRENGTH, BODIES, RANK ORDER STATISTICS, FRONT ENDS AND SURFACES.

Subject Categories : Ammunition and Explosives
      Armor
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE