dc.contributor.author | Farragher, Tadhg P. | |
dc.contributor.author | Leen, Sean B. | |
dc.date.accessioned | 2016-01-14T15:13:37Z | |
dc.date.available | 2016-01-14T15:13:37Z | |
dc.date.issued | 2014-04-16 | |
dc.identifier.citation | Hyde, CJ, Sun, W, Hyde, TH, Rousse, JP, Farragher, T, O Dowd, N.P., Leen, SB, (2014) 'Cyclic viscoplasticity testing and modelling of a service-aged P91 steel'. Journal Of Pressure Vessel Technology, 136 (044501). | en_IE |
dc.identifier.issn | 1528-8978 | |
dc.identifier.uri | http://hdl.handle.net/10379/5453 | |
dc.description | Journal article | en_IE |
dc.description.abstract | A service-aged P91 steel was used to perform an experimental program of cyclic mechanical testing in the temperature range of 400 °C–600 °C, under isothermal conditions, using both saw-tooth and dwell (inclusion of a constant strain dwell period at the maximum (tensile) strain within the cycle) waveforms. The results of this testing were used to identify the material constants for a modified Chaboche, unified viscoplasticity model, which can deal with rate-dependant cyclic effects, such as combined isotropic and kinematic hardening, and time-dependent effects, such as creep, associated with viscoplasticity. The model has been modified in order that the two-stage (nonlinear primary and linear secondary) softening which occurs within the cyclic response of the service-aged P91 material is accounted for and accurately predicted. The characterization of the cyclic viscoplasticity behavior of the service-aged P91 material at 500 °C is presented and compared to experimental stress–strain loops, cyclic softening and creep relaxation, obtained from the cyclic isothermal tests. | en_IE |
dc.description.sponsorship | Science Foundation Ireland [Grant No. SFI/2010/IN.1/I3015] | en_IE |
dc.format | application/pdf | en_IE |
dc.language.iso | en | en_IE |
dc.publisher | American Society of Mechanical Engineers | en_IE |
dc.relation.ispartof | Journal Of Pressure Vessel Technology | en |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | P91 steel | en_IE |
dc.title | Cyclic viscoplasticity testing and modelling of a service-aged P91 steel | en_IE |
dc.type | Article | en_IE |
dc.date.updated | 2015-12-07T12:34:01Z | |
dc.identifier.doi | 10.1115/1.4026865 | |
dc.local.publishedsource | 10.1115/1.4026865 | en_IE |
dc.description.peer-reviewed | peer-reviewed | |
dc.contributor.funder | |~| | |
dc.internal.rssid | 10124292 | |
dc.local.contact | Sean Leen, Mechanical & Biomedical Eng, Eng-2051, New Engineering Building, Nui Galway. 5955 Email: sean.leen@nuigalway.ie | |
dc.local.copyrightchecked | Yes | |
dc.local.version | PUBLISHED | |
nui.item.downloads | 582 | |