Damage equation for creep-fatigue interaction. [Total plastic strain, strain rate]

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A damage equation for creep-fatigue interaction is proposed. Instead of separating total plastic strain into time-dependent and time-independent components or using frequency as the controlling parameter, the problem is cast in terms of the total plastic strain and strain rate as the fundamental variables. The damage equation can be integrated to analyze the time to failure for creep and creep-fatigue loading. The method is illustrated for Types 304 and 316 austenitic stainless steel, Incoloy 800 and 2-/sup 1///sub 4/ Cr-1 Mo steel at various temperatures. Certain simplification can be made so that the method is attractive to designers of structures ... continued below

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Pages: 29

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Majumdar, S. & Maiya, P. S. January 1, 1976.

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A damage equation for creep-fatigue interaction is proposed. Instead of separating total plastic strain into time-dependent and time-independent components or using frequency as the controlling parameter, the problem is cast in terms of the total plastic strain and strain rate as the fundamental variables. The damage equation can be integrated to analyze the time to failure for creep and creep-fatigue loading. The method is illustrated for Types 304 and 316 austenitic stainless steel, Incoloy 800 and 2-/sup 1///sub 4/ Cr-1 Mo steel at various temperatures. Certain simplification can be made so that the method is attractive to designers of structures operating at elevated temperatures and loadings which do not necessarily involve a ''closed hysteresis loop'' type loading.

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Pages: 29

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Dep. NTIS

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  • Annual meeting of the American Society of Mechanical Engineers, New York, NY, USA, 29 Nov 1976

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  • Report No.: CONF-761107-21
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 7230961
  • Archival Resource Key: ark:/67531/metadc1445711

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1976

Added to The UNT Digital Library

  • Feb. 10, 2019, 8:45 p.m.

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  • Feb. 12, 2019, 5:17 p.m.

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Majumdar, S. & Maiya, P. S. Damage equation for creep-fatigue interaction. [Total plastic strain, strain rate], article, January 1, 1976; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1445711/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.