SYMPOSIA PAPER Published: 01 January 2002

Use of and Constraint to Predict Load and Location for Initiation of Crack Growth in Specimens Containing Part-Through Cracks


The configuration of part-through cracks (PTC) in specimens is similar to that of natural cracks in structural components. Consequently, test data from PTC specimens may be used to predict crack initiation or failure stresses and are used to evaluate the adequacy of predictive models. This paper compares experimental results obtained from PTC specimens, tested under either tensile or bending loads, with predictions of crack initiation stresses made using results from plane-strain fracture toughness specimens tested per ASTM E 399. Test data generated from single-edge-crack bend (SE(B)) specimens are used to predict values of the applied stress intensity factor (K) and the angle ø where crack growth initiation occurs in PTC specimens.

Author Information

Reuter, WG
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
Newman, JC
NASA Langley Research Center, Hampton, VA
Skinner, JD
Mississippi State University, Mississippi State, MS
Mear, ME
University of Texas, Austin, TX
Lloyd, WR
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
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Developed by Committee: E08
Pages: 353–380
DOI: 10.1520/STP10596S
ISBN-EB: 978-0-8031-5460-5
ISBN-13: 978-0-8031-2888-0