Mechanical Properties of Composite Materials
Keywords:
CFRP, Carbon fiber, Mechanical property, Crack growth, Failure mechanismAbstract
An examination has been made of the mechanical and failure properties of several composite materials, such as a short and a long carbon fiber reinforced plastic (short- and
long-CFRP) and metal based composite material. The short CFRP materials were used for a recycled CFRP which fabricated by the following process: the CFRP, consisting of epoxy resin with carbon fiber, is injected to a rectangular plate cavity after mixing with acrylonitrile butadiene styrene resin with different weight fractions of CFRP. The fatigue and ultimate tensile strength (UTS) increased with increasing CFRP content. These correlations, however, break down, especially for tensile strength, as the CFPR content becomes more than 70%. Influence of sample temperature on the bending strength of the long-CFRP was investigated, and it appears that the strength slightly degreases with increasing the temperature, due to the weakness in the matrix. Broken fiber and pull-out or debonding between the fiber and matrix were related to the main failure of the short- and long-CFRP samples. Mechanical properties of metal based composite materials have been also investigated, where fiber-like high
hardness CuAl2 structure is formed in aluminum matrix.
Excellent mechanical properties were obtained in this alloy,
e.g., the higher strength and the higher ductility, compared to
the same alloy without the fiber-like structure. There are
strong anisotropic effects on the mechanical properties due to
the fiber-like metal composite in a soft Al based matrix.
References
[1] G. Ben, “What we have accomplished in nedo project for automotive structures,” Proceedings of 16th Int. Conf. Comp. Mater. (2007–7).
[2] E. Kappel, D. Stefaniak, T. Spröwitz, C. Hühne, “A semi analytical simulation strategy and its application to warpage of autoclave-processed CFRP parts,” Compo.: Part A, 2013, vol.
42, pp. 1985–1994.
[3] K. Ogi, T. Nishikawa, Y. Okano, I. Taketa, “Mechanical properties of ABS resin reinforced with recycled CFRP,” Adv. Composite Mater., 2007, vol. 16, pp. 181–184.
[4] T. Kirihara, T. Kawashima, J. Takahashi, T. Matsuo, K. Uzawa, “Demand and disposal forecast for carbon fibre by bottom-up approach,” Proceedings of 18th Int. Conf. Comp. Mater. TH32
(2011-8) 1–4.
[5] T. Ozhen, E. Kilickap, O. Cakir, “Investigation of mechanical and machinability properties of SiC particle reinforced Al MMC,” J. Mater. Process. Technol., 2008, vol. 198, pp. 220–225.
[6] S-J. Hong, H-M. Kim, D. Huh, C. Suryanarayana, BS. Chun, “Effect of clustering on the mechanical properties of SiC particulate-reinforced aluminum alloy 2024 metal matrix
composites,” Mater. Sci. Eng. A, 2003, vol. 347, pp. 198–204.
[7] M. Okayasu, T. Yamazaki, K. Ota, K. Ogi, T. Shiraishi, “Mechanical properties and failure characteristics of a recycled CFRP under tensile and cyclic loading,” Int. J. Fatigue, 2013,
vol. 55, pp. 257–267.
[8] M. Okayasu, R. Sato, S. Takasu, “Effects of anisotropic microstructure of continuous cast Al-Cu eutectic alloys on their fatigue and tensile properties,” Int. J. Fatigue, 2012, vol. 42, pp. 45–56.
[9] M. Okayasu, S. Takasu, S. Yoshie, “Microstructure and material properties of an Al-Cu alloy provided by the Ohno continuous casting technique,” J. Mater. Process. Technol., 2010, vol. 210,
pp. 1529–1535.
[10] Annual Book of ASTM Standards, in: ASTM E399, vol. 03.01, American Society for Testing and Materials, 2008, pp. 497–529. [11] M. Okayasu, Z. Wang, “Experimental investigation of the
effects of artificial wedges on fatigue crack growth and crack closing behavior in annealed SAE1045 steel,” Int. J. Fatigue, 2007, vol. 29, pp. 962–976.
[12] M. Okayasu, S. Aoki, M. Mizuno, “Effects of silver-based metal electroplate on fatigue properties of PZT ceramics,” Int. J. Fatigue, 2008, vol. 30, pp. 1115–1124.
[13] M. Okayasu, M. Hitomi, H. Yamazaki, “Mechanical and fatigue strengths of silicon nitride ceramics in liquid aluminum alloys,” J. Eur. Ceram. Soc., 2009, vol. 29, pp. 2369–2378.
[14] ES. Puchi-Cabrera, MH. Staia, DT. Quinto, C. Villalobos Gutiérrez, E. Ochoa-Pérez, “Fatigue properties of a SAE4340 steel coated with TiCN by PAPVD,” Int. J. Fatigue, 2007, vol. 29, pp. 471–480.
