An engineering method for estimating notch-size effect in fatigue tests on steel

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Description

Neuber's proposed method of calculating a practical factor of stress concentration for parts containing notches of arbitrary size depends on the knowledge of a "new material constant" which can be established only indirectly. In this paper, the new constant has been evaluated for a large variety of steels from fatigue tests reported in the literature, attention being confined to stresses near the endurance limit. Reasonably satisfactory results were obtained with the assumption that the constant depends only on the tensile strength of the steel. Even in cases where the notches were cracks of which only the depth was known, reasonably ... continued below

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35 p. : ill.

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Kuhn, Paul & Hardrath, Herbert F. October 1952.

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  • Main Title: An engineering method for estimating notch-size effect in fatigue tests on steel
  • Series Title: NACA Technical Notes

Description

Neuber's proposed method of calculating a practical factor of stress concentration for parts containing notches of arbitrary size depends on the knowledge of a "new material constant" which can be established only indirectly. In this paper, the new constant has been evaluated for a large variety of steels from fatigue tests reported in the literature, attention being confined to stresses near the endurance limit. Reasonably satisfactory results were obtained with the assumption that the constant depends only on the tensile strength of the steel. Even in cases where the notches were cracks of which only the depth was known, reasonably satisfactory agreement was found between calculated and experimental factors. It is also shown that the material constant can be used in an empirical formula to estimate the size effect on unnotched specimens tested in bending fatigue.

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35 p. : ill.

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  • Accession or Local Control No: 93R12818
  • URL: http://hdl.handle.net/2060/19930083528 External Link
  • Report No.: NACA-TN-2805
  • Center for AeroSpace Information Number: 19930083528
  • Archival Resource Key: ark:/67531/metadc56431

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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Creation Date

  • October 1952

Added to The UNT Digital Library

  • Nov. 16, 2011, 7:33 a.m.

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  • April 11, 2018, 3:35 p.m.

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Kuhn, Paul & Hardrath, Herbert F. An engineering method for estimating notch-size effect in fatigue tests on steel, report, October 1952; (digital.library.unt.edu/ark:/67531/metadc56431/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.