Get This Paper

Comparison of Tensile Properties of Triaxial Braided Carbon Fiber Composites Made from Vacuum Assisted Resin Transfer Molding (VARTM) and Autoclave Molding


Title: Comparison of Tensile Properties of Triaxial Braided Carbon Fiber Composites Made from Vacuum Assisted Resin Transfer Molding (VARTM) and Autoclave Molding

Authors: Donald A. Klosterman, Charles E. Browning

DOI: 10.33599/nasampe/s.21.0424

Abstract: Triaxially braided fiber composites are increasingly being used in aerospace, ballistic, and sporting good applications due to their inherent damage tolerance, torsional stability, and cost compared to woven fabrics and unidirectional preforms. There have been numerous publications over the past 15-20 years on the mechanical properties and failure mechanisms of triaxial braided composites. However, most of these have involved panels made with autoclave curing. In the present study, braided carbon fiber composites were made using autoclave curing and vacuum assisted resin transfer molding (VARTM). The goal of the study was to compare the physical and tensile properties of quasi-isotropic panels produced from these two methods while keeping the fiber and matrix materials constant. Material characterizations included density and fiber volume fraction (Vf), tensile modulus and strength in both the 0° and 90° directions, and microstructure via optical microscopy and scanning electron microscopy. The results revealed that the 0° vs. 90° tensile properties of QISO composites are equivalent or very close is most respects regardless of processing technique. The VARTM panels had slightly lower Vf autoclave. However, the tensile properties of the VARTM panels compared favorably with autoclave cured panels when normalized for fiber volume fraction. Overall this study represents a very good side-by-side comparison of braided carbon fiber composites made with two significantly different processes.

References: 1. Ko, F.K. “Braiding” in ASM Handbook Vol. 21 - Composites, S.D. Henry et al, ASM International, Materials Park, OH, p. 69. 2. Wehrkamp-Richter, I., Hinterholzl, R., Pinho, S. “Damage and failure of triaxial braided composites under multi-axial stress states,” Composites Science and Technology, Vol. 150, September, 29, 2017, pp.32-44. 3. Kohlman, L.W. Evaluation of test methods for triaxial braid composites and the development of a large multiaxial test frame for validation using braided tube specimens, Ph.D. dissertation, University of Akron, May 2012. 4. Roberts, G.D., Salem, J.A., Bail, J.L., Kohlman, L.W, Binienda, W.K., Martin, R.E. “Approaches, for tensile testing of braided composites,” Presented at the 5th International Conference on Composite Testing and Model Identification (Comp Test 2011), Lausanne, Switzerland, February 14-16, 2011. 5. Lomov, S., Ivanov, D. Truong, T., Verpoest, I., Baudry, F., Bosche, K., Xie, H. “Experimental methodology of study of damage initiation and development in textile composites in uniaxial tensile test.” Compos. Sci. Technol. 68 (12), 2008, 2340–2349. 6. Ivanov, D.S., Baudry, F., Broucke, B.V.D., Lomov, S.V., Xie, H., Verpoest, I., Current, K. “Failure analysis of triaxialy braided composites,” Compos. Sci. Technol., 69, 2009. 1372–1380. 7. Braley, M., Strohminger, B.C., Meyers, B. “A Comparative evaluation of quasi-isotropic laminates composed of either braided triaxial fabric or woven fabric, including impact and laminate performance,” SAMPE Technical Conference Proceedings, Seattle, WA, May 22-25, 2017, Society for the Advancement of Material and Process Engineering – North America. 8. Bowman, C.L., Roberts, G.D., Braley, M.S. Xie, M., Booker, M.J. “Mechanical properties of triaxial braided carbon/epoxy composites,” Proceedings of the 35th International SAMPE Technical Conference, Dayton, Ohio, September 28-October 2, 2003, Society for the Advancement of Material and Process Engineering. 9. Xiao, X., Kia, H.G., Gong, X-J. “Strength prediction of a triaxially braided composite,” Composites Part A, Vol. 42, 2011, pp. 1000-1006. 10. Kueh, A., Pellegrino, S., “Triaxial Weave Fabric Composites,” European Space Agency Contractor Report, June 30, 2007. 11. Kueh, A., Pellegrino, S. “ABD matrix of single-ply triaxial weave fabric composites,” 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, April 23-26, 2007, Honolulu, Hawaii, AIAA-2007-2161. 12. El Mourid, R., Ganesan, R., Brochu, M., Crochon, T., Levesque, M. “Anisotropic oxidation due to aging in a triaxially braided composite and its influence on tensile failure,” Composites Part B, Vol. 76, July 2015, pp.1-12. 13. El Mourid, R., Ganesan, R., Brochu, M., Crochon, T., Levesque, M., “Effect of temperature on the failure modes of a triaxially braided polymer matrix composite,” International Journal of Solids and Structures, Vol. 97-98, 2015, pp. 1-15. 14. Boris, D., Xavier, L., Damien, S., “The tensile behavior of biaxial and triaxial braided fabrics,” Journal of Industrial Textiles, Vol. 47(8), 2184-2204, 2018. 15. Klosterman, D. “Development of a Simple Lab-Scale Vacuum Assisted Resin Transfer Molding (VARTM) Process,” Proceedings of 2018 CAMX (Composites and Advanced Materials Expo), ACMA and SAMPE, Dallas, TX, October 2018

Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000424

Pages: 15

Price: FREE

Get This Paper