This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Identification of True Stress-Strain Curve of Thermoplastic Polymers under Biaxial Tension
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 05, 2016 by SAE International in United States
Citation: Meng, Y., Xia, Y., Zhou, Q., and Lin, S., "Identification of True Stress-Strain Curve of Thermoplastic Polymers under Biaxial Tension," SAE Int. J. Mater. Manf. 9(3):768-775, 2016, https://doi.org/10.4271/2016-01-0514.
This article is concerned with identification of true stress-strain curve under biaxial tension of thermoplastic polymers. A new type of biaxial tension attachment was embedded first in a universal material test machine, which is able to transform unidirectional loading of the test machine to biaxial loading on the specimen with constant velocity. Cruciform specimen geometry was optimized via FE modeling. Three methods of calculating true stress in biaxial tension tests were compared, based on incompressibility assumption, linear elastic theory and inverse engineering method, respectively. The inverse engineering method is more appropriate for thermoplastic polymers since it considers the practical volume change of the material during biaxial tension deformation. The strategy of data processing was established to obtain biaxial tension true stress-strain curves of different thermoplastic polymers.
|Technical Paper||Tensile Test for Polymer Plastics with Extreme Large Elongation Using Quad-Camera Digital Image Correlation|
|Technical Paper||Structural Front-End Carrier Using Long Glass Fiber Polypropylene|