Volume 4, Issue 3, September 2020, Page: 60-65
Thermo-Structural Analysis of Carbon Fibre-Ni Based Super Alloy Composite Employed in Gas Turbines
Ankit Dhoka, Department of Aerospace Engineering, SRM University, Chennai, Tamil Nadu, India
Received: Aug. 2, 2020;       Accepted: Aug. 27, 2020;       Published: Sep. 7, 2020
DOI: 10.11648/j.ajmme.20200403.14      View  22      Downloads  32
Abstract
A computational analysis was carried out on two different materials of turbine blades, namely Inconel MA754 and Nimonic 80A, in order to determine their structural and thermal properties at elevated temperatures. Long carbon fibers of uniform length were used and deposited at varying thicknesses ranging from 1 mm to 4 mm, on the top surface of turbine blades and then analyzed for its performance. It is seen that the carbon fibers (IM10) embedded in the super alloys drastically improve the load bearing parameters of the configurations being analyzed. The improvement in structural load carrying ability is a result of higher Young's modulus primarily. Subsequent analysis with higher volume fraction of the fibers indicated saturation of performance at about 70% volume fraction for 4 mm fibers and significant improvement beyond it for the 1 mm fibers. With improvement in the load bearing characteristics the blade with fibers embedded into a tube like structure at 3 sections were configured and A thermal analysis of the same underscores the effectiveness of the 4 mm fibers in undergoing much reduced principal strains than other configurations. This is seen to be a result of insulation of the top surface from increase in temperature, which significantly reduces the thermal expansion, especially at the free end. This is in contrast to other configurations, where the low volume fraction of fibers resulted in high principal strain.
Keywords
Carbon Fibers, FEM, Turbine Blades, Thermal Analysis, High Temperature Materials
To cite this article
Ankit Dhoka, Thermo-Structural Analysis of Carbon Fibre-Ni Based Super Alloy Composite Employed in Gas Turbines, American Journal of Mechanical and Materials Engineering. Vol. 4, No. 3, 2020, pp. 60-65. doi: 10.11648/j.ajmme.20200403.14
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Eckert, E. R. G., 1984. Analysis of film cooling and full-coverage film cooling of gas turbine blades. Journal of Engineering for Gas Turbines and Power, 106 (1), pp. 206-213.
[2]
Ebenhoch, G. and Speer, T. M., 1996. Simulation of cooling systems in gas turbines. Journal of turbomachinery, 118 (2), pp. 301-306.
[3]
Choudhury, I. A., and M. A. El-Baradie. "Machinability of nickel-base super alloys: a general review." Journal of Materials Processing Technology 77. 1-3 (1998): 278-284.
[4]
Caron, P. and Khan, T., 1999. Evolution of Ni-based superalloys for single crystal gas turbine blade applications. Aerospace Science and Technology, 3 (8), pp. 513-523.
[5]
Henderson, M. B., Arrell, D., Larsson, R., Heobel, M. and Marchant, G., 2004. Nickel based superalloy welding practices for industrial gas turbine applications. Science and Technology of Welding and Joining, 9 (1), pp. 13-21.
[6]
Ren, W., Niu, C., Ding, B., Zhong, Y., Yu, J., Ren, Z., Liu, W., Ren, L. and Liaw, P. K., 2018. Improvement in creep life of a nickel-based single-crystal superalloy via composition homogeneity on the multiscales by magnetic-field-assisted directional solidification. Scientific reports, 8 (1), p. 1452.
[7]
Evans, A. G., Mumm, D. R., Hutchinson, J. W., Meier, G. H. and Pettit, F. S., 2001. Mechanisms controlling the durability of thermal barrier coatings. Progress in materials science, 46 (5), pp. 505-553.
[8]
Rösler, J., Bäker, M. and Volgmann, M., 2001. Stress state and failure mechanisms of thermal barrier coatings: role of creep in thermally grown oxide. Acta materialia, 49 (18), pp. 3659-3670.
[9]
Mehan, R. L. and Bolon, R. B., 1979. Interaction between silicon carbide and a nickel-based superalloy at elevated temperatures. Journal of materials science, 14 (10), pp. 2471-2481.
[10]
Cao, X. Q., Vassen, R. and Stoever, D., 2004. Ceramic materials for thermal barrier coatings. Journal of the European Ceramic Society, 24 (1), pp. 1-10.
[11]
Belmonte, M., 2006. Advanced ceramic materials for high temperature applications. Advanced engineering materials, 8 (8), pp. 693-703.
[12]
De Volder, M. F., Tawfick, S. H., Baughman, R. H. and Hart, A. J., 2013. Carbon nanotubes: present and future commercial applications. Science, 339 (6119), pp. 535-539.
[13]
Gohardani, O., Elola, M. C. and Elizetxea, C., 2014. Potential and prospective implementation of carbon nanotubes on next generation aircraft and space vehicles: a review of current and expected applications in aerospace sciences. Progress in Aerospace Sciences, 70, pp. 42-68.
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