Accession Number : AD0747230

Title :   A Characterization of the Fracture Resistance of Thick-Section Titanium Alloys.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Judy,R. W. , Jr. ; Freed,C. N. ; Goode,R. J.

Report Date : 05 JUL 1972

Pagination or Media Count : 15

Abstract : Procedures for design of structures to preclude catastropic fracture extension must be based on accurate fracture resistance characteristizations of the structural material that can only be provided by rational test procedures. For titanium alloys, the two rational fracture resistance test procedures that apply are KIc tests for brittle materials and Dynamic Tear (DT) tests for the entire range of strength and fracture resistance. The Ratio Analysis Diagram (RAD) is a framework for determining the significance of fracture resistance data in terms of stress level and crack size required for fracture. The RAD is derived from basic linear-elastic fracture concepts involving KIc and material yield strength; however, either KIc or DT test data can be indexed to the RAD. (Author)

Descriptors :   (*TITANIUM ALLOYS, FRACTURE(MECHANICS)), (*METAL PLATES, TITANIUM ALLOYS), TENSILE PROPERTIES, STRESSES, DEFECTS(MATERIALS), ELASTIC PROPERTIES, PLASTIC PROPERTIES, CRACKS, TOUGHNESS

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE