Accession Number : AD0672526

Title :   THE EFFECT OF VELOCITY ON THE DEFORMATION OF MODIFIED CHARPY COPPER SPECIMENS.

Descriptive Note : Technical rept.,

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICS

Personal Author(s) : Mobley,Carroll E. , Jr

Report Date : MAY 1968

Pagination or Media Count : 131

Abstract : Using a modified Charpy loading configuration, annealed OFHC copper modified Charpy V-notch specimens were broken with various impact velocities, ranging from 0.00090 to 15384 inches/second. Energy absorption for failure, failure bend angle, and extent of penetration were measured for specimens tested at each velocity station. Both the energy absorption for failure and the final bend angle versus velocity plots depicted three velocity regimes and the presence of two 'critical' velocities. An explanation for the presence of the 'critical' velocities was proposed and documented. (Author)

Descriptors :   (*COPPER, MECHANICAL PROPERTIES), IMPACT TESTS, TENSILE PROPERTIES, DEFORMATION, STRAIN(MECHANICS), VELOCITY, LOADS(FORCES), KINETIC ENERGY, ABSORPTION, HARDNESS, FRACTOGRAPHY, FAILURE(MECHANICS), METALLOGRAPHY

Subject Categories : Metallurgy and Metallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE