Experimental Mechanics

, Volume 37, Issue 1, pp 96–101 | Cite as

A biaxial thermomechanical disk test for glassy polymers

  • L. E. Asp
  • L. A. Berglund


Failure criteria for polymers need to include effects from the stress state. For this reason, biaxial test results are of interest. However, biaxial test methods usually require expensive equipment. In the test method presented here, a disk of epoxy is bonded between a steel ring and a steel disk. The temperature is then lowered until fracture is observed. Experiments were performed on three different glassy epoxy polymers. The biaxial stress state was analyzed by finite element analysis and by an approximate analytical model. Experimental observations support the ability of the method to provide material property data. An approximate analytical model was found sufficiently accurate for stress analysis and determination of the stress state at failure.


Epoxy Stress State Fluid Dynamics Finite Element Analysis Failure Criterion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Society for Experimental Mechanics, Inc. 1997

Authors and Affiliations

  • L. E. Asp
    • 1
  • L. A. Berglund
    • 1
  1. 1.Division of Polymer EngineeringLueå University of TechnologyLuleåSweden

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