Journal Published Online: 14 May 2009
Volume 37, Issue 4

Crack Mouth Opening Displacement-Based η Factors for SE(B) Specimens



Three-dimensional finite element analysis of SE(B) fracture toughness specimens with crack sizes ranging from a/W=0.1–0.6 were performed to develop ηCMOD values for estimating Jpl in fracture toughness tests. The analyses included specimens with smooth sides and 20 % sidegrooves. The results for ηCMOD were 4–9 % lower than previously published results based on two-dimensional plane strain analysis. A simple linear expression for ηCMOD(a/W) was proposed for introduction into ASTM E1820 for calculating Jpl in SE(B) specimens with 0.05≤a/W≤0.7.

Author Information

Petti, J.
Sandia National Laboratories, Albuquerque, NM
Dodds, Jr., R.
University of Illinois at Urbana-Champaign, Urbana, IL
Link, R.
U.S. Naval Academy, Annapolis, MD
Pages: 4
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: JTE102116
ISSN: 0090-3973
DOI: 10.1520/JTE102116