Reference number : GC-2017-Q3-00608, amendment number : , agreement type : G, recipient legal name : Chen, Zengtao (University of Alberta), recipient country : CA, recipient province : nan, recipient city : Alberta, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Thermal fatigue is widely recognized as an important damage mechanism in mixing points of hot and cold_x000D_
fluids. This phenomenon is an important subject in the life-time management of piping components of_x000D_
refineries and power plants. In particular, high frequency temperature fluctuations in tee connections as a result_x000D_
of mixing the hot and cold fluids may cause material degradation with consequence of cracking and thus affect_x000D_
the system integrity._x000D_
In order to predict failure caused by cyclic thermal loading, a strain base fatigue curve is needed. In particular,_x000D_
two group of pipeline steels will be targeted, the 300series stainless steel and 2.25 Cr-1Mo steel. For the former_x000D_
ones, strain-based fatigue tests will be conducted at different temperatures to extend the application of ASME_x000D_
code for fatigue design for higher strain ranges at higher temperature. For the latter, the temperature range of_x000D_
the ASME code will be extended to account for the elevated temperature as seen at the mixing tees._x000D_
The results of the proposed research will be used to capture the Chaboche viscoelastic material model which_x000D_
will be used in the finite element code to predict thermal fatigue failure of pipeline steels at the mixing tees._x000D_
This will help minimize the likelihood of fatigue failure, and therefore, improve the structural integrity of_x000D_
piping components of refineries and power plants., program purpose french : Thermal fatigue is widely recognized as an important damage mechanism in mixing points of hot and cold_x000D_
fluids. This phenomenon is an important subject in the life-time management of piping components of_x000D_
refineries and power plants. In particular, high frequency temperature fluctuations in tee connections as a result_x000D_
of mixing the hot and cold fluids may cause material degradation with consequence of cracking and thus affect_x000D_
the system integrity._x000D_
In order to predict failure caused by cyclic thermal loading, a strain base fatigue curve is needed. In particular,_x000D_
two group of pipeline steels will be targeted, the 300series stainless steel and 2.25 Cr-1Mo steel. For the former_x000D_
ones, strain-based fatigue tests will be conducted at different temperatures to extend the application of ASME_x000D_
code for fatigue design for higher strain ranges at higher temperature. For the latter, the temperature range of_x000D_
the ASME code will be extended to account for the elevated temperature as seen at the mixing tees._x000D_
The results of the proposed research will be used to capture the Chaboche viscoelastic material model which_x000D_
will be used in the finite element code to predict thermal fatigue failure of pipeline steels at the mixing tees._x000D_
This will help minimize the likelihood of fatigue failure, and therefore, improve the structural integrity of_x000D_
piping components of refineries and power plants., agreement title english : Determination of Material Coefficients for SA-317 and for 2.25 Cr-1 Mo at 450 °C in Chaboche Unified Model, agreement title french : Determination of Material Coefficients for SA-317 and for 2.25 Cr-1 Mo at 450 °C in Chaboche Unified Model, agreement number : EGP, agreement value : 24970.0, agreement start date : 2017-12-13, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada