Accession Number : ADA187711

Title :   Crack Arrest Fracture Toughness of Armor Steels.

Descriptive Note : Final rept. 31 Jan 86-30 Jan 87,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS, OH

Personal Author(s) : Ripling, E J

PDF Url : ADA187711

Report Date : Oct 1987

Pagination or Media Count : 64

Abstract : A method for evaluating break up, or shattering anc cracking may be by the use of the crack arrest fracture toughness, Ka. Use of this Ka would not be restricted to steels, but could be applied to other armor materials also. The crack arrest fracture toughness, KIa, of the two steels were shown to be different, the 4130 being tougher than 4340. The significance of this can only be ascertained by comparing these results with ballistic test data. Keywords: High strength steels; Armor plate; Transition temperatures; Fracture toughness; Mechanical properties; Dynamic properties; Crack propagations; Ballistic testing.

Descriptors :   *ARMOR PLATE, *FRACTURE(MECHANICS), *TOUGHNESS, *ORDNANCE STEEL, ARMOR, ARRESTING(PROCESS), BALLISTICS, CRACK PROPAGATION, CRACKS, DYNAMICS, EXPERIMENTAL DATA, HIGH STRENGTH ALLOYS, LIMITATIONS, MECHANICAL PROPERTIES, STEEL, TEST AND EVALUATION, TRANSITION TEMPERATURE, TERMINAL BALLISTICS, HIGH STRENGTH ALLOYS, PROJECTILES, PENETRATION, DEFORMATION

Subject Categories : Properties of Metals and Alloys
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE