ISSN: 0090-3973
Page Count: 6

A Proposed Standard Round Compact Specimen for Plane Strain Fracture Toughness Testing
Underwood, JH
Materials engineer, U.S. Army Armament Research and Development Command, Benet Weapons Laboratory, N.Y.

Newman, JC
Research engineer, National Aeronautics and Space Administration, Langley Research Center, Va.

Seeley, RR
Research engineer, Babcock and Wilcox Co., Research and Development Division, Ohio

Abstract

A round, disk-shaped specimen is proposed as a standard test specimen for addition to ASTM Test for Plane-Strain Fracture Toughness of Metallic Materials (E 399-78a). The specimen is diametrically cracked, and it is loaded in the same general way as the existing standard compact specimen. Tests and analyses were performed to verify that the proposed round compact specimen and associated stress intensity factor K solution are appropriate for a standard plane strain fracture toughness test. The use of the round compact specimen for other fracture tests is described.

Keywords:
fractures (materials), toughness, stresses, standard specimen, round bar, stress-intensity factor

Paper ID: JTE10630J
DOI: 10.1520/JTE10630J
ASTM International is a member of CrossRef.