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Journal of Pressure Vessel Technology
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Mean Shear Stress Effect for a Notch-Free Ductile Material Under Pure Cyclic Torsional Loads

J. Pressure Vessel Technol.  -- November 2006 --  Volume 128,  Issue 4, 667 (3 pages)
doi:10.1115/1.2349582

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Author(s):
Shyh-Jen Wang, Associate Research Scientist, Assistant Professor
Veterans General Hospital, Taipei, Taiwan, Republic of China; Institute of Bio-Engineering, National Yang-Ming University, Taipei, Taiwan, Republic of China; and Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China
The relationship of torque versus angle of rotation stabilizes after only a few cycles so that the alternating stress will become a constant as long as the maximum shear stress is less than the shear yield strength of the material. Using this information in Findley`s fatigue criterion, it is demonstrated that the mean shear stress has very little influence on the fatigue limit of a notch-free ductile material under cyclic torsional loading.

©2006 American Society of Mechanical Engineers

History: Received 2 December 2005; revised 8 January 2006
doi: http://dx.doi.org/10.1115/1.2349582

KEYWORDS and PACS

Keywords
PACS
  • 46.35.+z
    Viscoelasticity, plasticity, viscoplasticity
  • 46.50.+a
    Fracture mechanics, fatigue and cracks
  • YEAR: 2006

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PUBLICATION DATA

Doc Type:
Technical Brief, Technical Note, Brief Note
Coden:
JPVTAS
ISSN:
0094-9930 (print)   1528-8978 (online)
Publisher:
AIP is a member of CrossRef ASME

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