Materials engineerMember of ASTM, U.S. Army Armament Research and Development Command, Benet Weapons Laboratory, Watervliet, N.Y.
Research engineerMember of ASTM, National Aeronautics and Space Administration, Langley Research Center, Hampton, Va.
Research engineerMember of ASTM, Babcock and Wilcox Co., Research and Development Division, Alliance, Ohio
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.
Paper ID: JTE10630J