Hello researchers,
I am looking for the stress vs. time to rupture curve of HDPE @23C in air, however needs be plotted with Arrhenius method and not TTS (time temperature superposition), any help would be highly appreciated.
Thanks.
Nazli
ArArrheniusation per Mole k=Ae−EaRTk=Ae−EaRT
Arrhenius Equation per Molecule k=Ae−EaKTk=Ae−EaKT
Please see whether these references are helpful:-
1) Rajesh Kumar Jain, "Creep Behaviour of Geosynthetics for Sustainable Construction". Res. J. Chem. Env. Sci., Volume 1 [5] 2013 : 34-46 :- (both stepped isotherm method and time-temperature-stress superposition method are discussed):- please see the link if you have access: http://www.aelsindia.com/rjcesdecember2013/5.pdf
2) Page 92, Fig. 3.15 in Book "HDPE Geomembranes in Geotechnics", By Werner W. Müller, Springer - Verlag 2007.
Best wishes
1) Please see the thesis by Edgemond John W, 1966 on : "Investigation of creep phenomena in polyethylene and polypropylene" (Calhoun: The NPS Institutional Archive DSpace Repository). For this thesis, please see the link if you have access:
http://calhoun.nps.edu/bitstream/handle/10945/9546/investigationofc00edge.pdf?sequence=1
2a) Test Temperatures are 45, 60 and 75 deg C:- Please see Table 2 and Figure 12 in this thesis. It gives activation energy obtained from creep tests on HDPE. May be helpful.
2b) Please note that the creep curves at 23 deg C (at various stresses) are not given in the above mentioned thesis.
3) Extrapolation by Iso-stress Method:- In continuation to 2a) and 2b)
Hence, I think you may get creep-rupture life at 23 deg C by extrapolation:- by plotting the rupture life vs. temperature at constant applied stress, i.e., iso-stress method. (for iso-stress method, please see for e.g. the paper by Osamu KANEMAU et al. on Cr - Mo Steels: the link if you have access:- https://www.jstage.jst.go.jp/article/jsms1963/46/3Appendix/46_3Appendix_31/_pdf)
Also:- 4) Investigation of creep phenomena in polyethylene and polypropylene, James E. Sinclair, and John W. Edgemond, J Applied Polymer Science, 1969 (DOI: 10.1002/app.1969.070130515).
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