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A more precise definition of the method of determining the fatigue life of polymer materials from the reheat temperature

Conclusions

1. The rate of increase in the reheat temperature on the linear segment remains constant (for a periodic loading with higher stress levels) until a critical damage is sustained for the stress in question.

2. The magnitude of Tc for a given stress is independent of the loading history, provided the critical damage has not been sustained for this stress.

3. With decreasing stress Tc decreases slightly. A method for the accelerated determination of Tc from a single specimen for different stress levels has been developed.

4. A method of predicting the fatigue life from the results of short-term tests, which take into account the variation of Tc due to stress level, has been developed.

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Literature cited

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Additional information

Institute of Polymer Mechanics, Academy of Sciences of the Latvian SSR, Riga. Translated from Mekhanika Polimerov, No. 5, pp. 906–913, September–October, 1977.

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Oldyrev, P.P., Parfeev, V.M. & Komar, V.I. A more precise definition of the method of determining the fatigue life of polymer materials from the reheat temperature. Polymer Mechanics 13, 762–768 (1977). https://doi.org/10.1007/BF00860333

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Keywords

  • Polymer
  • Fatigue
  • Stress Level
  • Fatigue Life
  • High Stress