The equivalent time temperature method (ETT) is a novel extension of the equivalent time method. ETT is developed in this work to deal with time-temperature shifting of long-term polymer and polymer composite creep data, including the effects of physical aging at nonuniform temperature. Modifications to classical testing methods and protocols are presented to obtain accurate and repeatable data that can support long-term predictions with nonuniform temperature conditions through time. These techniques are used to generate momentary Time temperature superposition (TTSP) master curves, temperature shift factor rates, and aging shift factor rates. Novel interpretation and techniques are presented to deal with the coupled age-temperature behavior over long times. Validation of predictions against over 20,000 Hr of long-term data in field conditions is presented.
Equivalent Time Temperature Model for Physical Aging and Temperature Effects on Polymer Creep and Relaxation
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division June 21, 2003; revision received February 19, 2004. Associate Editor: A. Sastry.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Barbero, E. J., and Ford, K. J. (November 9, 2004). "Equivalent Time Temperature Model for Physical Aging and Temperature Effects on Polymer Creep and Relaxation ." ASME. J. Eng. Mater. Technol. October 2004; 126(4): 413–419. https://doi.org/10.1115/1.1789956
Download citation file:
- Ris (Zotero)
- Reference Manager