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Published in: Strength of Materials 5/2021

13-01-2022

Thermal Deformation of Woven Composites at High Temperatures

Authors: M. K. Kucher, O. O. Chyzhyk

Published in: Strength of Materials | Issue 5/2021

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Abstract

The efficiency of predicting the deformation of woven polymer composite materials at high temperatures taking into account the processes of ablation and thermal oxidative degradation is analyzed within the framework of hereditary media mechanics. Ablation is understood as burnout of a part of the composite components’ mass, while degradation is a change of its properties under the influence of heat at high temperatures. Dependences, which describe the change in the relative density of the composite, are illustrated by the thermogravimetric analysis curves obtained at a fixed heating rate. Numerous experimental studies have proved that the equation of state of ablution polymer matrices, carbon fiber bundle, and woven composites depends on the temperature and heating rate. The reliability of the calculated deformation results is evaluated by comparing them with the experimental data obtained for the quasi-static heating conditions of the epoxy woven carbon plastics specimens. The composite is reinforced with carbon plastic woven fabric of the canvas type. It is shown that the functions aθ1 and aθ2, which take into account the effect of fabric on the elastic characteristics of the composite in the main directions, quite effectively describe their distributions depending on the maximum angle of curvature ϑm of reinforcement threads, the temperature θ and the mismatch angle Φ under tension and shear in the reinforcement plane. At low temperatures before the ablation process, the Young modulus values practically return to the initial ones. After completion of the ablation process observed at θ≥ 500°C, the material is completely charred, which correlates with the experiment. A good agreement of the distribution of thermal strains at a fixed heating rate θ ≈ 0.1K/s with the experimental results can be noted.
Literature
1.
go back to reference V. A. Kargin (Ed.), Encyclopedia of Polymers [in Russian], in 3 vol., Soviet Encyclopedia, Moscow (1972–1977). V. A. Kargin (Ed.), Encyclopedia of Polymers [in Russian], in 3 vol., Soviet Encyclopedia, Moscow (1972–1977).
2.
go back to reference B. T. Bryk, Destruction of Filled Polymers [in Russian], Khimiya, Moscow (1989). B. T. Bryk, Destruction of Filled Polymers [in Russian], Khimiya, Moscow (1989).
3.
go back to reference R. Szczepaniak, G. Kozun, P. Przubylek, et al., “The effect of the application of a ponder additive of a phase change material on the ablative properties of a hybrid composite,” Compos. Struct., 256, 1–23 (2021). CrossRef R. Szczepaniak, G. Kozun, P. Przubylek, et al., “The effect of the application of a ponder additive of a phase change material on the ablative properties of a hybrid composite,” Compos. Struct., 256, 1–23 (2021). CrossRef
4.
go back to reference N. Winya, A. Boonpan, and K. Prapunkarn, “Study of factors affecting the ablation rate of phenolic resin,” Int. J. Chem. Eng. Appl., 4, No. 4, 234–237 (2013). N. Winya, A. Boonpan, and K. Prapunkarn, “Study of factors affecting the ablation rate of phenolic resin,” Int. J. Chem. Eng. Appl., 4, No. 4, 234–237 (2013).
5.
go back to reference R. I. Nigmatulin, Fundamentals of the Mechanics of Heterogeneous Media [in Russian], Nauka, Moscow (1978). R. I. Nigmatulin, Fundamentals of the Mechanics of Heterogeneous Media [in Russian], Nauka, Moscow (1978).
6.
go back to reference M. A. Grinfeld, Methods of Continuum Mechanics in the Theory of Phase Transformations [in Russian], Nauka, Moscow (1990). M. A. Grinfeld, Methods of Continuum Mechanics in the Theory of Phase Transformations [in Russian], Nauka, Moscow (1990).
7.
go back to reference Yu. I. Dimitrienko, Thermomechanics of Composite Structures under High Temperatures, Springer, Berlin (2015). Yu. I. Dimitrienko, Thermomechanics of Composite Structures under High Temperatures, Springer, Berlin (2015).
8.
go back to reference Composite Materials Handbook – MIL 17, Vol. 2: Polymer Matrix Composite: Materials Properties, US Department of Defense (1999). Composite Materials Handbook – MIL 17, Vol. 2: Polymer Matrix Composite: Materials Properties, US Department of Defense (1999).
9.
go back to reference V. V. Korchak, Chemical Structure and Temperature Characteristics of Polymers [in Russian], Nauka, Moscow (1970). V. V. Korchak, Chemical Structure and Temperature Characteristics of Polymers [in Russian], Nauka, Moscow (1970).
10.
go back to reference T. W. Chou and F. K. Ko, Textile Structural Composites, Elsevier, Amsterdam–New York (1989). T. W. Chou and F. K. Ko, Textile Structural Composites, Elsevier, Amsterdam–New York (1989).
11.
go back to reference Yu. M. Tarnopol’skii, I. G. Zhigun, and V. A. Polyakov, Spatially Reinforced Composite Materials: Handbook [in Russian], Moscow, Mashinostroenie (1987). Yu. M. Tarnopol’skii, I. G. Zhigun, and V. A. Polyakov, Spatially Reinforced Composite Materials: Handbook [in Russian], Moscow, Mashinostroenie (1987).
Metadata
Title
Thermal Deformation of Woven Composites at High Temperatures
Authors
M. K. Kucher
O. O. Chyzhyk
Publication date
13-01-2022
Publisher
Springer US
Published in
Strength of Materials / Issue 5/2021
Print ISSN: 0039-2316
Electronic ISSN: 1573-9325
DOI
https://doi.org/10.1007/s11223-021-00338-3