Nonlinear thermo-mechanical behavior of polymers under multi-axial loading conditions
Conference
·
OSTI ID:175145
- California Institute of Technology, Pasadena, CA (United States)
The nonlinear thermo-mechanical behaviors of polymers under tension/compression and torsion at temperatures ranging from room temperature to 120{degrees}C are investigated. Thin-walled cylindrical specimens are used in the experiment to achieve relatively uniform stress and strain fields. The surface deformation of the specimens are measured by a digital image correlation technique which is capable to provide non-contact, full field surface deformation characterization on curved specimen surface. Several test series have been conducted and the results are presented. They are: (1) Independent tensile/compressive or torsional creep at different stress levels and at different temperatures covering the temperatures up to and above the glass transition; (2) Multi-axial creep (i.e., simultaneous tensile/compressive and torsional creep at different stress levels for different temperatures); (3) Multiaxial loading and unloading at temperatures below and above the glass transition.
- OSTI ID:
- 175145
- Report Number(s):
- CONF-950686--
- Country of Publication:
- United States
- Language:
- English
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