Evaluation of strength anisotropy and fracture behavior of UD NITE-SiC/SiC composites with various fiber orientations

Naofumi Nakazato; Akira Kohyama; Hirotatsu Kishimoto; Naofumi Nakazato; Akira Kohyama; Hirotatsu Kishimoto

doi:10.3934/matersci.2016.4.1382

AIMS Materials Science

2016, Volume 3, Issue 4: 1382-1390. doi: 10.3934/matersci.2016.4.1382

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Evaluation of strength anisotropy and fracture behavior of UD NITE-SiC/SiC composites with various fiber orientations

1.
College of Design and Manufacturing Technology, Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido, 080-8585, Japan
2.
Organization of Advanced Sustainability Initiative for Energy System/Material (OASIS), Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido, 080-8585, Japan

Received: 30 June 2016 Accepted: 10 October 2016 Published: 14 October 2016

A SiC/SiC composite by Nano-infiltration and Transient Eutectic-phase (NITE) process is the attractive candidate materials for advanced energy systems, aero-space system. The NITE process is improved to the industrialization grade process from the laboratory grade process. In order to ensure reliability of products by NITE-SiC/SiC composites, understanding of the strength anisotropy is important. This paper presented the basic strength anisotropy knowledges of unidirectional (UD) type NITE-SiC/SiC composites with various fiber orientations by correlation evaluation of microstructure and mechanical properties. Also, the strength anisotropy evaluation of UD NITE-SiC/SiC composites utilizing the strength anisotropy prediction theories were discussed. The axial/off-axial mechanical properties of UD NITE-SiC/SiC composites by the industrialization grade process were evaluated by axial/off-axial tensile test. The mechanical properties of NITE-SiC/SiC composites fabricated tended to decrease with increasing of fiber orientation angle. The experiment results by axial/off-axial tensile test were consistent with the strength anisotropy prediction theories by the maximum normal stress theory and the Tsai-Hill criterion. Also, the failure mode of SiC/SiC composites fabricated with each fiber orientation angle was consistent with fracture surface observation results. The strength anisotropy of UD NITE-SiC/SiC composites was suggested to be able to predict by Tsai-Hill criterion. The basic strength anisotropy of UD SiC/SiC composites was understood.
- advanced composites,
- SiC/SiC composite,
- NITE method,
- mechanical properties,
- strength anisotropy,
- fracture behavior
Citation: Naofumi Nakazato, Akira Kohyama, Hirotatsu Kishimoto. Evaluation of strength anisotropy and fracture behavior of UD NITE-SiC/SiC composites with various fiber orientations[J]. AIMS Materials Science, 2016, 3(4): 1382-1390. doi: 10.3934/matersci.2016.4.1382

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Abstract

A SiC/SiC composite by Nano-infiltration and Transient Eutectic-phase (NITE) process is the attractive candidate materials for advanced energy systems, aero-space system. The NITE process is improved to the industrialization grade process from the laboratory grade process. In order to ensure reliability of products by NITE-SiC/SiC composites, understanding of the strength anisotropy is important. This paper presented the basic strength anisotropy knowledges of unidirectional (UD) type NITE-SiC/SiC composites with various fiber orientations by correlation evaluation of microstructure and mechanical properties. Also, the strength anisotropy evaluation of UD NITE-SiC/SiC composites utilizing the strength anisotropy prediction theories were discussed. The axial/off-axial mechanical properties of UD NITE-SiC/SiC composites by the industrialization grade process were evaluated by axial/off-axial tensile test. The mechanical properties of NITE-SiC/SiC composites fabricated tended to decrease with increasing of fiber orientation angle. The experiment results by axial/off-axial tensile test were consistent with the strength anisotropy prediction theories by the maximum normal stress theory and the Tsai-Hill criterion. Also, the failure mode of SiC/SiC composites fabricated with each fiber orientation angle was consistent with fracture surface observation results. The strength anisotropy of UD NITE-SiC/SiC composites was suggested to be able to predict by Tsai-Hill criterion. The basic strength anisotropy of UD SiC/SiC composites was understood.

References

[1]	Naslain R (2004) Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview. Sci Compos Tech 64: 155–170. doi: 10.1016/S0266-3538(03)00230-6
[2]	Kohyama A, Kishimoto H (2013) SiC/SiC composite materials for nuclear application. Nucl Saf Simul 4: 72–79.
[3]	Kotoh Y, Snead LL, Henager CH Jr, et al. (2014) Curent status and recent research achievements in SiC/SiC composites. J Nucl Mater 455: 387–397.
[4]	Yang W, Noda T, Araki H, et al. (2003) Mechanical properties of several advanced Tyranno-SA fiber-reinforced CVI-SiC matrix composites. Mater Sci Eng A345: 28–35.
[5]	Jones R, Szweda A, Petrak D (1999) Polymer derived ceramic matrix composites. Composites A30: 569–575.
[6]	Lee SP, Katoh Y, Kohyama A (2001) Microstructure analysis and strength evaluation of reaction sintered SiC/SiC composites. Scripta Mater 44: 153–157. doi: 10.1016/S1359-6462(00)00542-X
[7]	Kohyama A, Dong SM, Katoh Y (2002) Development of SiC/SiC composites by Nano-Infiltration and Transient Eutectoid (NITE) process. Ceram Eng Sci Proc 23: 311–318.
[8]	Katoh Y, Dong SM, Kohyama A (2002) Thermo-mechanical properties and microstructure of silicon carbide composites fabricated by nano-infiltrated transient eutectoid process. Fusion Eng Des 61–62: 723–731.
[9]	Dong SM, Katoh Y, Kohyama A (2003) Preparation of SiC/SiC composites by hot pressing, using Tyranno-SA fiber as reinforcement. J Am Ceram Soc 86: 26–32.
[10]	Kohyama A, Park JS, Jung HC (2011) Advanced SiC fibers and SiC/SiC composites toward industrialization. J Nucl Mater 417: 340–343. doi: 10.1016/j.jnucmat.2010.12.086
[11]	Nakazato N, Kohyama A, Kohno Y (2012) Effect of SiC powders surface property on densification of NITE-SiC Preforms. J Jpn I Met 76: 634–638. doi: 10.2320/jinstmet.76.634
[12]	Nakazato N, Kishimoto H, Shimoda K, et al. (2011) Effects of preform densification on near-net shaping of NITE-SiC/SiC composites. IOP Conference Series: Materials Science and Engineering 18: 202011. doi: 10.1088/1757-899X/18/20/202011
[13]	Nozawa T, Ozawa K, Choi YB, et al. (2012) Determination and prediction of axial/off-axial mechanical properties of SiC/SiC composites. Fusion Eng Des 87: 803–807. doi: 10.1016/j.fusengdes.2012.02.026
[14]	Azzi VD, Tsai SW (1965) Anisotropy strength of composites. Exp Mech 5: 283–288. doi: 10.1007/BF02326292
[15]	Hull D, Clyne TW (1996) An Introduction to Composite Materials, Cambridge University Press, 184–190
[16]	Sinclair JH, Chamis CC (1981) Fracture Modes in Off-Axis Fiber Composites. Polym Composite 2: 45–52.

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