Karl-Hans Laermann. Photoviscoelasticity-an Experimental Method in Viscoelastic Stress Analysis[J]. Applied Mathematics and Mechanics, 1987, 8(11): 959-966.
Citation: Karl-Hans Laermann. Photoviscoelasticity-an Experimental Method in Viscoelastic Stress Analysis[J]. Applied Mathematics and Mechanics, 1987, 8(11): 959-966.

Photoviscoelasticity-an Experimental Method in Viscoelastic Stress Analysis

  • Received Date: 1986-03-11
  • Publish Date: 1987-11-15
  • In this paper,the photoviscoelasticity method of viscoelastic stress analysis has been discussed in detail.lt is shown that,in order to avoid the effects of shrinkage andaging in the test specimens,it is suggested that the specimens should be tempered for three days at a temperature of 60℃ before starting the experiments,and the temperature filtering arrangement is recommended in the experimental setups to keep the temperature absolutely constant.Besides the axi-symmetrical time-dependent stress state,the determination of the principle axes of the refraction tensor experimentally remains an unsufficiently solved problem.To avoid dynamic effect in the step wise loading,the time of measurement in every step should be limited in about one secend.
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