Accession Number : AD0765166

Title :   Fracture Behavior of Simple Composites.

Descriptive Note : Final rept. Sep 69-Jun 72,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Roberson,James A.

Report Date : JUL 1973

Pagination or Media Count : 12

Abstract : The work was intended to examine the interactions between the plastic zone at the tip of an advancing crack and the elastic stress field generated by a pre-existing micro-crack in its path. It was anticipated that diffusion bonding would provide a means for preparing specimens which were essentially perfect except for micro-cracks which were to be introduced by machining very small notches in the mating surfaces before bonding. It was found that diffusion bonding of Ti-6Al-4V alloy produced either very good or very poor bonds. The conditions required for the production of very good bonds made the introduction of micro-cracks unfeasible. Perfect bonds were obtained in Ti-6Al-4V alloy. (Author)

Descriptors :   (*DIFFUSION BONDING, TITANIUM ALLOYS), BONDED JOINTS, FRACTURE(MECHANICS), CRACK PROPAGATION

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE