Abstract
In this work the idea of using constant load uniaxial creep test results instead of constant stress results for developing a CDM creep model for the P92 material is demonstrated. Due to limited availability of creep test results this work is based on incomplete test data and a general stress rupture line. In spite of these limitations a material creep model was developed for use in a FE analysis. Using P91 material as an example, a method is proposed to account for differences in strain evolution as a function of stress which normally manifests itself as lower strain values at low stresses in a normalised time-strain plot. This allows the CDM model to be used both in FE analysis and in strain-based life assessment engineering calculations. (orig.) 3 refs.
Citation Formats
Rantala, J H, Hurst, R C, and Bregani, F.
Prediction of material creep behaviour for strain based life assessment applications.
Finland: N. p.,
1998.
Web.
Rantala, J H, Hurst, R C, & Bregani, F.
Prediction of material creep behaviour for strain based life assessment applications.
Finland.
Rantala, J H, Hurst, R C, and Bregani, F.
1998.
"Prediction of material creep behaviour for strain based life assessment applications."
Finland.
@misc{etde_325007,
title = {Prediction of material creep behaviour for strain based life assessment applications}
author = {Rantala, J H, Hurst, R C, and Bregani, F}
abstractNote = {In this work the idea of using constant load uniaxial creep test results instead of constant stress results for developing a CDM creep model for the P92 material is demonstrated. Due to limited availability of creep test results this work is based on incomplete test data and a general stress rupture line. In spite of these limitations a material creep model was developed for use in a FE analysis. Using P91 material as an example, a method is proposed to account for differences in strain evolution as a function of stress which normally manifests itself as lower strain values at low stresses in a normalised time-strain plot. This allows the CDM model to be used both in FE analysis and in strain-based life assessment engineering calculations. (orig.) 3 refs.}
place = {Finland}
year = {1998}
month = {Dec}
}
title = {Prediction of material creep behaviour for strain based life assessment applications}
author = {Rantala, J H, Hurst, R C, and Bregani, F}
abstractNote = {In this work the idea of using constant load uniaxial creep test results instead of constant stress results for developing a CDM creep model for the P92 material is demonstrated. Due to limited availability of creep test results this work is based on incomplete test data and a general stress rupture line. In spite of these limitations a material creep model was developed for use in a FE analysis. Using P91 material as an example, a method is proposed to account for differences in strain evolution as a function of stress which normally manifests itself as lower strain values at low stresses in a normalised time-strain plot. This allows the CDM model to be used both in FE analysis and in strain-based life assessment engineering calculations. (orig.) 3 refs.}
place = {Finland}
year = {1998}
month = {Dec}
}