Creep-fatigue prediction of low alloy ferritic steels using a strain energy based methodology

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dc.contributor.authorPayten, WMen_AU
dc.contributor.authorDean, DWen_AU
dc.contributor.authorSnowden, KUen_AU
dc.date.accessioned2010-08-10T05:24:36Zen_AU
dc.date.available2010-08-10T05:24:36Zen_AU
dc.date.issued2009-07-26en_AU
dc.date.statistics2009-07-26en_AU
dc.description.abstractThe accumulation of creep-fatigue damage over time is the principal damage mechanism which will eventually lead to crack initiation in critical high temperature equipment. A model that calculates the creep damage under conditions of strain control has been developed that assumes on a macroscopic level that the energy dissipated in the material may be taken as a measure of the creep damage induced in the material. This then assumes that the creep damage is directly proportional to absorbed internal energy density. The model developed is derived from considerations of mechanistic cavity growth. The model makes use of already existing creep data and relatively easily determined fatigue data for estimation of life under non-steady state conditions. The predictions of the energy-density exhaustion approach are compared with the results of creep-fatigue tests on a low alloy ferritic steel 1/2Cr-1/2Mo-1/4V (CMV) and with creep-fatigue calculations using a number of current models. The predicted results of the energy-density model are found to have good correlation with the measured creep-fatigue lives.en_AU
dc.identifier.booktitleProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Volume 6: Materials and Fabrication, Parts A and Ben_AU
dc.identifier.citationPayten, W. M., Dean, D. W., & Snowden, K. U. (2009). Creep-fatigue prediction of low alloy ferritic steels using a strain energy based methodology. ASME 2009 Pressure Vessels and Piping Conference (PVP2009), 26th – 30th July 2009. Prague, Czech Republic: Hilton Prague. In Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication, Parts A and B, 6, (pp. 1403-1410). doi:10.1115/PVP2009-77208en_AU
dc.identifier.conferenceenddate30 July 2009en_AU
dc.identifier.conferencenameASME 2009 Pressure Vessels and Piping Conference (PVP2009)en_AU
dc.identifier.conferenceplacePrague, Czech Republicen_AU
dc.identifier.conferencestartdate26 July 2009en_AU
dc.identifier.govdoc2285en_AU
dc.identifier.isbn9780791843697en_AU
dc.identifier.issn0277-027Xen_AU
dc.identifier.pagination1403-1410en_AU
dc.identifier.urihttp://dx.doi.org/10.1115/PVP2009-77208en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2156en_AU
dc.identifier.volume6en_AU
dc.language.isoenen_AU
dc.publisherAmerican Society of Mechanical Engineers (ASME)en_AU
dc.subjectCreepen_AU
dc.subjectFatigueen_AU
dc.subjectFerritic steelsen_AU
dc.subjectStrainsen_AU
dc.subjectDamageen_AU
dc.subjectEnergy densityen_AU
dc.titleCreep-fatigue prediction of low alloy ferritic steels using a strain energy based methodologyen_AU
dc.typeConference Paperen_AU
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