Accession Number : AD0860130

Title :   Factors Controlling the Strength of Composites (Interphase Fracturing of Composite Bodies).

Descriptive Note : Final rept. 1 Feb 68-1 Mar 69,

Corporate Author : MATERIALS RESEARCH LAB INC GLENWOOD IL

Personal Author(s) : Mostovoy, Sheldon ; Ripling, E. J.

Report Date : 1969

Pagination or Media Count : 77

Abstract : The influence of epoxy composition, joint geometry, and loading rate on the fracturing behavior of adhesive joints as described. Composition was studied by comparing the fracture toughness and stress corrosion cracking characteristics of joints using amine vs. anhydride hardeners. To evaluate the influence of joint geometry these same properties were measured as a function of joint thickness (and to a lesser extent joint width) using the amine hardener only. Rate effects were studied on amine hardened epoxy joints of a single geometry (five mils thick and 500 mils wide). In all cases the adherends were an aluminum alloy. (Author)

Descriptors :   (*COMPOSITE MATERIALS, BONDED JOINTS), (*BONDED JOINTS, FRACTURE(MECHANICS)), ADHESIVES, EPOXY RESINS, STRESS CORROSION, CURING AGENTS, AMINES, ANHYDRIDES, LOADS(FORCES).

Subject Categories : Laminates and Composite Materials
      Couplers, Fasteners, and Joints
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE