Size Requirements for Fatigue-Cracked Fracture Toughness Screening Specimens.
Abstract
Aluminum, titanium and steel alloys were selected on the basis of their strength/toughness 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1974
- Accession Number
- ADA009525
Entities
People
- J. Keith Donald
- John L. Shannon Jr