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Evaluation of the Effects of Specimen Configuration and Testing Variables on Crack Propagation Properties

  • J. L. Christian
  • W. E. Witzell
  • A. Hurlich
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 10)

Abstract

The objective of this portion of a sponsored program [1, 2] was to determine the effects of specimen configuration and testing variables on the crack propagation properties of three high-strength, sheet materials at room and cryogenic temperatures in order to help establish standards for fracture toughness testing. The test program consisted of determining the crack propagation properties of cold-rolled types 301 and 310 stainless steels and 2014-T6 aluminum alloy at 75°, -320°, and -423°F using center-notched, sheet tensile specimens. Basic fracture properties were obtained for both the longitudinal and transverse directions using 4-in.-wide test specimens. In addition, tests were performed to determine the effect of specimen width, notch length, specimen thickness, and loading rate. Repeated loading tests were also performed on 18-in.-wide specimens of all three alloys to determine the effect of fatigue loading as compared to static loading. A brief discussion of fracture concepts and definitions of terms and equations used in fracture-mechanics studies are presented in the following paragraphs to clarify the discussion of test results.

Keywords

Fracture Toughness Strain Energy Release Rate Specimen Width Repeated Loading Critical Crack Length 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Plenum Press, New York 1965

Authors and Affiliations

  • J. L. Christian
    • 1
  • W. E. Witzell
    • 1
  • A. Hurlich
    • 1
  1. 1.General Dynamics/AstronauticsSan DiegoUSA

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