SYMPOSIA PAPER Published: 01 January 1981
STP28814S

Estimations on J-Integral and Tearing Modulus from a Single Specimen Test Record

Source

This paper presents methods for evaluating the J-integral and the tearing moduli from a single test record. Several different aspects of the problem have been combined in this work. An overview of the conditions for separability of the load into multiplicative functions of displacement and crack length as well as for the existence of η-factors is presented. The consequences of expressing J by a Merkle-Corten type formula are explored in terms of the crack increment, da, the tearing modulus, T, and J itself, including the case of growing cracks. A simple method is suggested to obtain the correct J for crack growth and T from nothing more than the test record itself; the procedure is applied to available experimental data and the results are compared with those obtained by other formulae. Additional physical interpretation is given on the Tmat-versus-Tapp stability criterion and the remaining compliance capacity CCR is defined.

Author Information

Ernst, HA
Materials Engineering Department, Westinghouse R&D Center, Pittsburgh, Pa.
Paris, PC
Center for Fracture Mechanics, Washington University, St. Louis, Mo.
Landes, JD
Materials Engineering Department, Westinghouse R&D Center, Pittsburgh, Pa.
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E08
Pages: 476–502
DOI: 10.1520/STP28814S
ISBN-EB: 978-0-8031-4809-3
ISBN-13: 978-0-8031-0732-8