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Effect of Hydrostatic Stress on Low Cycle Fatigue Life

[+] Author Affiliations
Masao Sakane

Ritsumeikan University, Kusatsu-shi, Shiga, Japan

Takamoto Itoh

University of Fukui, Fukui, Japan

Paper No. PVP2005-71756, pp. 279-285; 7 pages
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 1: Codes and Standards
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4186-3 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME


This paper overviews the effect of hydrostatic stress on the static tensile stress-strain relationship, low cycle fatigue life, creep rupture time and creep-fatigue life at room and elevated temperatures. There was almost no influence of the hydrostatic stress on the tensile stress-strain relationship but the tensile ductility was increased by the hydrostatic stress. Small or little increase of fatigue life was observed by the superposition of the hydrostatic stress under a full reversed loading but a clear increase of fatigue life was found in a zero-to-tension loading. The hydrostatic stress significantly lowered the creep strain rate and elongated the creep rupture time. The hydrostatic stress also increased the creep-fatigue life under a full reversed loading.

Copyright © 2005 by ASME



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