Published Online: 14 May 2009
Page Count: 4
Petti, J. P.
Sandia National Laboratories, Albuquerque, NM
Dodds, Jr., R. H.
University of Illinois at Urbana-Champaign, Urbana, IL
Link, R. E.
U.S. Naval Academy, Annapolis, MD
(Received 12 September 2008; accepted 11 April 2009)
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.
Paper ID: JTE102116