Accession Number:

ADA009525

Title:

Size Requirements for Fatigue-Cracked Fracture Toughness Screening Specimens.

Descriptive Note:

Final rept. Aug 73-Dec 74,

Corporate Author:

METAL PROPERTIES COUNCIL INC HELLERTOWN PA

Report Date:

1974-12-01

Pagination or Media Count:

75.0

Abstract:

Aluminum, titanium and steel alloys were selected on the basis of their strengthtoughness properties for the purpose of investigating the performance of a proposed fatigue-cracked fracture toughness screening specimen. Specimens of varying thicknesses and widths were tested with the largest specimen of each alloy satisfying the minimum size requirements according to ASTM-E-399-74 specifications. The results of this program demonstrate the feasibility of the proposed specimen configuration with lowest width to thickness ratio showing the best correlation between the net-fracture strength and plane strain fracture toughness K sub I sub C. Further investigation is warranted to assess the effects of specimen eccentricity and other limitations related to relative toughness of the material.

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE