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Abstract

This article presents a study on composites exposed to elevated temperatures associated with fire. A thermo-viscoplastic model is proposed for description of the rate-dependent and temperature-dependent behavior of composites at elevated temperatures. AS4/PEEK and E-glass/vinylester composites are chosen to examine the proposed model. Thermo-viscoplastic parameters of the proposed model were determined for each material using experimental data. Off-axis angle tests were performed with various strain rates at various temperatures for E-glass/vinylester woven composite, while experimental data available from literatures were used for AS4/PEEK unidirectional composite. Comparison of the results from the proposed model with experimental data shows good agreement. Also, a few interesting points observed during this study, such as the material behavior near the glass transition temperature, the failure mechanism, and the effect of charring are discussed.

Keywords

thermo-viscoplastic model fire off-axis angle test AS4/PEEK E-glass/vinylester glass transition temperature

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References

Sorathia, U. , Ohlemiller, T. , Lyon, R. , Riffle, J. and Schultz, N. (2001). Effect of Fire, In: Gap Analysis for Durability of Fiber Reinforced Polymer Composites in Civil Infrastructure, Chapter 9, Civil Engineering Research Foundation, Reston, VA, USA .

Pering, G.A. , Farrell, P.V. and Springer, G.S. (1980). Degradation of Tensile and Shear Properties of Composites Exposed to Fire or High Temperatures , Journal of Composite Materials, 14(1): 54–68 .

Griffis, C.A. , Masumura, R.A. and Chang, C.I. (1981). Thermal Response of Graphite Epoxy Composite Subjected to Rapid Heating , Journal of Composite Materials, 15(1): 427–443 .

Springer, G.S. (1984). Model for Predicting the Mechanical Properties of Composites at Elevated Temperatures , Journal of Reinforced Plastics & Composite, 3(1): 85–95 .

Chen, J.K. , Sun, C.T. and Chang, C.I. (1985). Failure Analysis of a Graphite/Epoxy Laminate Subjected to Combined Thermal and Mechanical Loading , Journal of Composite Materials, 19(5): 408–423 .

Griffis, C.A. , Nemes, J.A. , Stonesifer, F.R. and Chang, C.I. (1986). Degradation in Strength of Laminated Composites Subjected to Intense Heating and Mechanical Loading , Journal of Composite Materials, 20(3): 216–235 .

Henderson, J.B. and Wiecek, T.E. (1987). A Mathematical Model to Predict the Thermal Response of Decomposing, Expanding Polymer , Journal of Composite Materials, 21(4): 373–393 .

McManus, H.L.N. and Springer, G.S. (1992). High Temperature Thermomechanical Behavior of Carbon–Phenolic and Carbon-Carbon Composites, I. Analysis , Journal of Composite Materials, 26(2): 206–229 .

McManus, H.L.N. and Springer, G.S. (1992). High Temperature Thermomechanical Behavior of Carbon–Phenolic and Carbon-Carbon Composites, II. Results , Journal of Composite Materials, 26(2): 230–255 .

10.

Milke, J.A. and Vizzini, A.J. (1991). Thermal Response of Fire-Exposed Composites , Journal of Composites Technology and Research, 13(3): 145–151 .

11.

Milke, J.A. and Vizzini, A.J. (1993). The Effects of Simulated Fire Exposure on Glass-Reinforced Thermoplastic Materials , Journal of Fire Protection Engineering, 5(3): 113–124 .

12.

Dao, M. and Asaro, R.J. (1999). A Study on Failure Prediction and Design Criteria for Fiber Composites under Fire Degradation , Composites:Part A, 30(2): 123–131 .

13.

Palmer, D.W. , Adamchak, J.C. and Sorathia, U. (1999). Structural Integrity of Composites at Elevated Temperatures, NSWCCD-65-TR-1999/17, Naval Surface Warfare Center Carderock Division .

14.

Palmer, D.W. (2001). Implementation of a Linear Orthotropic Thermoviscoelastic Material Model in ABAQUS, NSWCCD-65-TR-2001/08, Naval Surface Warfare Center Carderock Division .

15.

Potocki, M.L. and Tuttle, M.E. (2001). Behavior of Composite Panels under an Applied Load and One Dimensional Heat Flux, Final Technical Report, Office of Naval Research , N00014-97-1-0999.

16.

Malvern, L.E. (1951). The Propagation of Longitudinal Waves of Plastic Deformation in a Bar of Material Exhibiting a Strain Rate Effect , Journal of Applied Mechanics, 18(2): 203–208 .

17.

Eigenberg, M.A. and Yen, C.F. (1981). A Theory of Multiaxial Anisotropic Viscoplasticity , Journal of Applied Mechanics, 48(2): 276–284 .

18.

Krempl, E. and Hong, B.Z. (1989). A Simple Laminate Theory using the Orthotropic Viscoplasticity Theory based on Overstress Part I: In Plane Stress–Strain Relationships for Metal Matrix Composites , Composite Science and Technology, 35(1): 53–74 .

19.

Gates, T.S. and Sun, C.T. (1991). Elastic/Viscoplastic Constitutive Model for Fiber Reinforced Thermoplastic Composites , AIAA Journal, 29(3): 457–463 .

20.

Yoon, K.J. and Sun, C.T. (1991). Characterization of Elastic–Viscoplastic Properties of an AS4/PEEK Thermoplastic Composite , Journal of Composite Materials, 25(10): 1277–1296 .

21.

Thiruppukuzhi, S.V. and Sun, C.T. (2001). Models for the Strain-rate-dependent Behavior of Polymer Composites , Composite Science and Technology, 61(1): 1–12 .

22.

Park, H. (2003). Nonlinear Solid Shell Element Formulation for Analysis of Composite Panels under Blast Wave Pressure Loading, PhD Dissertation, University of Maryland, Maryland.

23.

Sun, C.T. and Chen, J.L. (1989). A Simple Flow Rule for Characterizing Nonlinear Behavior of Fiber Composites , Journal of Composite Materials, 23(10): 1009–1020 .

24.

Wang, C. and Sun, C.T. (1997). Experimental Characterization of Constitutive Models for PEEK Thermoplastic Composite at Heating Stage During Forming , Journal of Composite Materials, 31(15): 1480–1506 .

25.

Anilturk, D and Chan, W.S. (2003). Structural Stability of Composite Laminated Column Exposed to High Temperature or Fire , Journal of Composite Materials, 37(8): 687–700 .

Thermo-viscoplastic Modeling of Composites Exposed to Fire or High Temperature

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