The deformation behavior of APC-2 PEEK matrix thermoplastic composite at elevated temperatures was characterized in order to increase the understanding of the mechanics in solid-phase forming of advanced thermoplastic composite structures. Off-axis tension tests were performed to determine the inelastic and rate-dependent material properties. An anisotropic elastic/viscoplastic constitutive model was proposed to describe the inelastic and rate-dependent material responses. The constitutive model was evaluated using off-axis and laminate specimens subjected to uniaxial tension.
Get full access to this article
View all access options for this article.
References
1.
1. Okine, R. K.1989. "Analysis of Forming Parts from Advanced Thermoplastic Composite Sheet Materials,"J. of Thermoplastic Composite Materials, 2:50-76.
2.
2. Cogswell, F. N. and D. C. Leach. 1988. "Processing Science of Continuous Fibre Reinforced Thermoplastic Composites,"SAMPE Journal (May/June):11-14.
3.
3. Cattanach, J. B., G. Guff and F. N. Cogswell. 1986. "The Processing of Thermoplastic Containing High Loadings of Long and Continuous Reinforcing Fibers,"J. Polymer Engineering, 6(1-4):345-362.
4.
4. Cogswell, F. N. and D. J. Groves. 1988. "The Melt Rheology of Continuous Fibre Reinforced Structural Composite Materials,"Xth International Congress on Rheology, Sydney, Australia, pp. 275-277.
5.
5. Mallon, P. J., C. M. O. Bradaigh and R. B. Pipes. 1989. "Polymeric Diaphragm Forming of Complex-Curvature Thermoplastic Composites,"Composites, 20(1):45-56.
6.
6. Soll, W. and T. G. Gutowski. 1988. "Forming Thermoplastic Composite Parts,"SAMPE J (May/June):15-19.
7.
7. Ostrom, R. B., S. B. Koch and D. L. Wirz-Safranek. 1989. "Thermoplastic Composite Fighter Forward Fuselage,"SAMPE Quarterly (Oct.):39-45.
8.
8. Miller, A. K., M. Gur, A. Peled, A. Payne and E. Menzel. 1990. "Die-Less Forming of Thermoplastic-Matrix, Continuous-Fiber Composites,"J. Composite Materials, 21(4):346-381.
9.
9. Muzzy, J. D., X. Wu and J. S. Colton. 1989. "Thermoforming of High Performance Thermoplastic Composites,"ANTEC'89, pp. 1465-1470.
10.
10. Smiley, A. J. 1988. "Diaphragm Forming of Carbon Fiber Reinforced Thermoplastic Composite Materials," Ph.D. Dissertation, University of Delaware, May.
11.
11. Beaussart, A. J. 1990. "Numerical Modelling of Sheet Forming Processes for Thermoplastic Composites," M.S. Degree Thesis, University of Delaware, August.
12.
12. Albert, S. T. and T. G. Gutowski. 1989. "Ply-Slip During the Forming of Thermoplastic Composite Parts,"J. of Composite Materials, 23:587-605.
13.
13. Bigg, D. M. and J. R. Preston. 1989. "Stamping of Thermoplastic Matrix Composites,"Polymer Composites, 10:261-268.
14.
14. Wang, C. and C. T. Sun. "Thermoelastic Behavior of PEEK Thermoplastic Composite During Cooling from Forming Temperatures," to be published.
15.
15. Nguyen, H. X. and H. Ishida. 1987. "Poly(Aryl-Ether-Ether-Ketone) and Its Advanced Composites: A Review,"Polymer Composites, 8(2):57-72.
16.
16. ICI Fiberite Corporation, 1986. APC-2 Data Sheet.
17.
17. Mijovic, J. and T. C. Gsell. 1990. "Calorimetric Study of Polyetheretherketone (PEEK) and Its Carbon Fiber Composite,"SAMPE Quarterly (Jan.):42-46.
18.
18. Scobbo, J. J., Jr. and N. Nakajima. 1990. "Simple Shear Deformation of Molten Thermoplastic Continuous Graphite Fiber Composites,"SAMPE Quarterly (Apr.):40-47.
19.
19. Lou, Y. C. and R. A. Schapery. 1971. "Viscoelastic Characterization of a Nonlinear Fiber-Reinforced Plastic,"J. Composite Materials, 5:208-233.
20.
20. Xiao, X. R.1989. "Studies on the Viscoelastic Behaviour of a Thermoplastic Resin Composite,"Composites Science and Technology, 34(2):163-181.
21.
21. Malvern, L. E.1951. "The Propagation of Longitudinal Waves of Plastic Deformation in a Bar of Material Exhibiting a Strain-Rate Effect,"ASME Journal of Applied Mechanics, 18:203-208.
22.
22. Perzyna, P.1966. "Fundamental Problems in Viscoplasticity,"Advances in Applied Mechanics, 9:244-377.
23.
23. Cristescu, N. and I. Suliciu. 1982. Viscoplasticity, Hague/Boston/London: Martinus Nijhoff Publishers.
24.
24. Eisenberg, M. A. and C. F. Yen. 1981. "A Theory of Multiaxial Anisotropic Viscoplasticity,"ASME Journal of Applied Mechanics (June):48:276-284.
25.
25. Eisenberg, M. A. and C. F. Yen. 1984. "The Anisotropic Deformation of Yield Surfaces,"ASME Winter Meeting, New Orleans, Louisiana, December 9-14.
26.
26. Hill, R.1956. The Mathematical Theory of Plasticity, New York, NY: Oxford University Press.
27.
27. Sun, C. T. and J. L. Chen. 1989. "A Simple Flow Rule for Characterizing Nonlinear Behavior of Fiber Composites,"J. Composite Materials, 23(10):1009-1020.
28.
28. Sun, C. T. and K. J. Yoon. 1991. "Characterization of Elastic-Plastic Behavior of AS4/PEEK Thermoplastic Composite for Temperature Variation,"J. Composite Materials, 25(10):1297-1313.
29.
29. Gates, T. S. and C. T. Sun. 1989. "An Elastic/Viscoplastic Constitutive Theory for Fiber Reinforced Thermoplastic Composites,"Proc. of AIAA Spring Conference, Mobile, Alabama (April 3-5):845-851.
