Browse > Article
http://dx.doi.org/10.5139/JKSAS.2011.39.4.321

The Analysis of Creep characteristics for Turbine blade using Theta projection method  

Lee, Mu-Hyoung (한국항공대학교 대학원)
Han, Won-Jae (한국항공대학교 대학원)
Jang, Byung-Wook (한국항공대학교 대학원)
Lee, Bok-Won (공군 군수사령부 항공기술연구소)
Park, Jung-Sun (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.4, 2011 , pp. 321-331 More about this Journal
Abstract
The present work is aimed to analyze the creep characteristics of a turbojet engine turbine blade using the theta projection method. The theta projection method has been widely used due to its advantages and flexibility. For the creep characteristic analysis of the turbine blade, tests are performed considering the operating conditions and the non-linear material properties. Results from the creep test are fitted using the four theta model. The predicted proprieties using the four theta model are compared with the prediction model and creep test results. To obtain an optimum value of the four theta parameters in non-linear square method, a number of computing processes in the non-linear least square method were carried out to obtain full creep curves. Results using the theta model has more than 0.95 value of $R^2$. The results between the experimental values and predicted four theta model has about 90.0% accuracy. The theta projection method can be utilized for a design purpose to predict the creep behavior.
Keywords
Creep; Least square method; Theta projection method; Turbine blade; LMP master curve;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Evans, R. W., and Wilshire, B., Creep of Metals and Alloys, Institute of metals, 1985, pp. 197-243.
2 Safari, J., and Nategh, S., "On the Heat treatment of Rene' 80 nickel-base superalloy", Journal of Materials Processing Technology, Vol. 176, 2006, pp. 240-250.   DOI   ScienceOn
3 Kim, S. G., Hwang, Y. H., Kim, T. G., and Shu, C. M., "Failure analysis of J85 Engine turbine blades", Engineering Failure Analysis, Vol. 15, 2008, pp. 394-400.   DOI   ScienceOn
4 Viswanathan, R., Damage Mechanism and Life Assessment of High-Temperature Components, ASM international, 1989, pp. 121-135.
5 Povolo, F., "Comments on the Monkman-Grant and the modified Monkman-Grant relationships", Journal of materials science, Vol. 20, 1985, pp. 2005-2010.   DOI
6 Clech, J.P., "An Extension of the Omega Method to Primary and Tertiary Creep of Leed-Free Solders", Electronic Components and Technology Conference, Vol. 5, 2005, pp. 1261-1271.
7 Evans, R. W., and Wilshire, B., Introduction to Creep, Institute of material, 1993, pp. 46-57.
8 Evans, R. W., and Wilshire, B., Creep of Metals and Alloys, Institute of metals, 1985, pp. 197-243.
9 Lemaitre, J., and Chaboche, J. L., Mechanics of solid materials, Cambridge university press, 1990, pp. 346-450.
10 Garofalo, F., Fundamentals of Creep and Creep-Rupture in Metals, The macmillan Company, NewYork, 1966, pp. 156-201.
11 Evans, R. W., and Wilshire, B., Introduction to Creep, Institute of material, 1993, pp. 46-57.
12 Bartolotta, P. A., Bowman, R. R., Kruse, D. L., and Halford, G. R., “Long-term durability analysis of a 100,000+ HR Stirling Power Convertor Heater Head”, Energy Conversion Engineering Conference and Exhibit, Vol. 1, 2000, pp. 259-265.
13 Chapra, S. C., and Canale, R. P., Numerical methods for Engineering, McGraw-Hill, 2006, pp. 351-383.
14 Haldar, A., and Mahadevan, S., Probability, Reliability, and Statistical Methods in Engineering Design, John Wiley & Sons Inc, 2000, pp. 156-172