Cover
Vol. 8 No. 1 (2008)

Published: June 30, 2008

Pages: 50-59

Original Article

Evaluation of Reliability of Rupture and Rotational Strength of the Ceramic Turbine Wheel

Haider Hadi Jasim 1
1 Chemical Engineering Department, College of Engineering, Basrah University, Basrah, Iraq
History
  • Received: March 30, 2008
  • Available Online: June 30, 2008
DOI

https://doi.org/10.33971/bjes.8.1.5

Abstract

In this paper, Weibull uni-axial and multi-axial distribution function is applied to evaluate the reliability of the fracture strength of rotating turbine rotor wheel manufactured from ceramic material and have inner surface crack. Three cases are considered, first taking only the effect of rotational stresses, second taking the effect of rotational and thermal stresses in ceramic disc, and third taking the effect of rotational and thermal loading in ceramic blade. It was found that there is a convergence between results gotten from uni-axial and multi-axial distribution function, but multi-axial distribution function give small large in values result compared to uni-axial distribution function. The expected values of rupture strength of ceramic blade is higher than of that of disc material, therefore the failure occurs in blade first than in disc material in service survival.

References

  1. Nobu Kamiya, Kenichiro Takama, Syoji Saski, Tetsuji Shimizu, "Design and evaluation of silicon nitride turbocharger rotor", ASME paper, No.91-GT-258, 1991.
  2. Robert H. "Weibull analysis of hot section silicone carbide ceramic wheel material development for gas turbine component", 27th annual conference on material structure, Cape Canaveral, 2003.
  3. Licht H. R. "Silicone nitride material development for gas turbine component applications" Catalogue of Saint-Gobain ceramic and plastic Inc., 2006.
  4. Nobu Kamiya, Mitsuru A., Akinobu B., and Shigetaka W., "Determination of fracture origin in ceramic radial rotor by taking photographs at failure from two or three direction", ASME paper, No.90- GT-383, 1990.
  5. Takatori K., Honma T., Kamiya N., Masak H., Sasaki S., Wada S., "Fabrication and testing of ceramic turbine wheel", ASME paper, No.91- GT-142, 1991.
  6. Duffy S. F., Baker E. H., Palko J. "Reliability and strength analysis of microturbine components" 28th annual Coca Beach conference on advanced ceramic material and composite, 2004.
  7. Yotaro Matsuo and Hideyuki Sato "A probabilistic treatise of rupture of brittle rotating disc", Bulletin of the JSME, Vo.22, No.172, 1989.
  8. Duffy S., Baker E., Wereszcsak A., and Swab J. "Weibull analysis effective volume and effective area for ceramic C-Ring test specimen", ASTEM Journal of testing and evaluation, Vo.33, No.4, 2005.
  9. Hearn E., "Mechanics of material", Pergamon International Library, 1979.
  10. Dusza J., Lube T., Danzer R. and Weisskopf K-L "Mechanical properties of some Si3N4 automotive gas turbine rotor ceramics", Key engineering materials, Vo. 89, No. 91, pp.535-540, 1994.
  11. Lin H. T., Ferber M. K., Westphal W., and Macri F. "Evaluation of mechanical reliability of silicone nitride vanes after field tests in an industrial gas turbine", ASME GT 2002-30629, Proceedings of ASME, Amsterdam, Netherlands, 2002
  12. Dretta E, Francissco J. S., and Rossana V., "The variational indirect boundary element method: A strategy toward the solution of very large problems of site response", J. of computational a caustics, vol.9, no.2, pp. 531-541, 2001.
  13. Kesseli J., Sullivan S. S., Duffy S. F., Baker E. H., and Ferber M. K., Jonkowski J., "Comparative materials evaluation for a gas turbine rotor", 27th annual conference on composite, material, and structures, 2003.