Accession Number : AD0675489

Title :   RESIDUAL STRESS DETERMINATION IN 20 MM HEI M56A3 SHELL BODIES.

Descriptive Note : Technical note,

Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA PITMAN-DUNN RESEARCH LABS

Personal Author(s) : Hess,Edward H.

Report Date : AUG 1968

Pagination or Media Count : 19

Abstract : A technique was used for obtaining the type and an approximation of the magnitude of residual stress in 20 mm HEI M56A3 shell bodies manufactured by three different processes: machining; machining and cold nosing; and blank, cup, and draw methods. The examination consisted of slicing off rings transverse to the longitudinal axis and then slitting them. This procedure gives an estimate of the tangential stresses. Longitudinal stress measurements were also made by slicing a horseshoe section from the center of the shell body, but the results were not conclusive. (Author)

Descriptors :   (*HIGH EXPLOSIVE AMMUNITION, CARTRIDGE CASES), (*CARTRIDGE CASES, STRESSES), INCENDIARY AMMUNITION, MANUFACTURING, DRAWING(FORMING), MACHINING, STRESS RELIEVING, PROJECTILE CASES, BODIES OF REVOLUTION, CUTTING, CRACKS, CRACK PROPAGATION, ANALYSIS OF VARIANCE

Subject Categories : Ammunition and Explosives
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE