Prediction of creep of polymeric materials during random processes of change in loading and temperature-humidity conditions of surrounding media
- 33 Downloads
1. On the basis of the exponentialsmoothing method, a method is suggested for estimating the probability characteristics (statistical moments) of nonstationary random processes of change in temperature conditions of the surrounding medium.
2. The possibility is shown of the application of the methods of theory of nonstationary random processes to the prediction of creep of polymeric materials which belong to the class of thermal—moisture rheologically simple solids during nonstationary random change in temperature and humidity of the material. The proposed method of prediction has been experimentally confirmed for the example of prolonged (27,000 h) creep of PN-3 polyester resin during simple shear under the climatic conditions of Riga.
KeywordsClimatic Condition Polymeric Material Random Process Simple Shear Statistical Moment
Unable to display preview. Download preview PDF.
- 1.G. A. Andrikson, Z. V. Kalnroze, and Yu. S. Urzhumtsev, "Prediction of creep of polymeric materials during random processes of change in loading and temperature-humidity conditions of surrounding media. I. Random nonstationary one-dimensional loading," Mekh. Polim., No. 2, 214–219 (1976).Google Scholar
- 2.A. A. Sveshnikov, Applied Methods of the Theory of Random Functions [in Russian], 2nd ed., Moscow (1968).Google Scholar
- 3.V. S. Pugachev, Introduction to Probability Theory [in Russian], Moscow (1968).Google Scholar
- 4.E. I. Pustyl'nik, Statistical Methods of Analysis of Processing of Observations [in Russian], Moscow (1968).Google Scholar
- 5.K. V. Konyaev, Spectral Analysis of Random Processes and Fields [in Russian], Moscow (1973).Google Scholar
- 6.É. I. Tsvetkov, Nonstationary Random Processes and Their Analysis [in Russian], Moscow (1973).Google Scholar
- 7.J. Bendat and A. Piersol, Random Data; Analysis and Measurement Procedures, New York, Wiley-Interscience (1971).Google Scholar
- 8.E. S. Venttsel', Probability Theory [in Russian], 3rd ed., Moscow (1964).Google Scholar
- 9.A. G. Ivakhnenko and V. G. Lapa, Prediction of Random Processes [in Russian], Kiev (1971).Google Scholar
- 10.G. S. Kil'dishev and A. A. Frenkel, Analysis of Intermittent Series and Prediction [in Russian], Moscow (1973).Google Scholar
- 11.Yu. V. Chuev, Yu. B. Mikhailov, and V. I. Kuz'min, Prediction of Quantitative Characteristics of Processes [in Russian], Moscow (1975).Google Scholar
- 12.R. D. Maksimov, V. P. Mochalov, and E. A. Sokolov, "Influence of temperature and humidity on creep of polymeric materials. Communication 3," Mekh. Polim., No. 4, 627–632 (1976).Google Scholar
- 13.Yu. S. Urzhumtsev and R. D. Maksimov, Prognostics of Deformativity of Polymeric Materials [in Russian], Riga (1975).Google Scholar
- 14.H. Kramer, Mathematical Methods of Statistics, Princeton University Press (1946).Google Scholar