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Wide-range displacement expressions for standard fracture mechanics specimensWide-range algebraic expressions for the displacement of cracked fracture mechanics specimens are developed. For each specimen two equations are given: one for the displacement as a function of crack length, the other for crack length as a function of displacement. All the specimens that appear in ASTM Test for Plane-Strain Fracture Toughness of Metallic Materials (E 399) are represented in addition to the crack mouth displacement for a pure bending specimen. For the compact tension sample and the disk-shaped compact tension sample, the displacement at the crack mouth and at the load line are both considered. Only the crack mouth displacements for the arc-shaped tension samples are presented. The agreement between the displacements or crack lengths predicted by the various equations and the corresponding numerical data from which they were developed are nominally about 3 percent or better. These expressions should be useful in all types of fracture testing including fracture toughness, K-resistance, and fatigue crack growth.
Document ID
19860035968
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Kapp, J. A.
(U.S. Army, Benet Weapons Laboratory, Watervliet NY, United States)
Gross, B.
(NASA Lewis Research Center Cleveland, OH, United States)
Leger, G. S.
(Army Armament Research and Development Command Watervliet, NY, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
Structural Mechanics
Accession Number
86A20706
Distribution Limits
Public
Copyright
Other

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