A Study on the Effect of the Thickness of Bond Coating on the Thermal Stresses of a Sprayed Thermal Barrier Coating

접착층의 두께가 용사 열차폐 코팅의 열응력에 미치는 영향에 관한 연구

  • Published : 2001.04.01

Abstract

Based on the principle of complementary energy, an analytical method is developed which focuses on the end effects for determining thermal stress distributions in a three-layered beam. This method gives the stress distributions which completely satisfy the stress-free boundary conditions. A numerical example is given in order to verify this method. The results show that the present analytical solutions have the values of stress in excellent agreement with the solutions derived by other investigators. Using this method, the effects of the thickness of bond coat on the thermal stresses of a typical sprayed thermal barrier coating, which consists of IN738LC substrate, MCrAIY bond coat and ZrO$_2$-8wt%Y$_2$O$_3$top coat, were investigated.

Keywords

References

  1. Journal of Thermal Stresses v.1 Interlaminar Thermoelastic Stresses in Layered Beams P.B. Grimado
  2. Journal of Thermal Stresses v.5 Thermal Stresses in Laminated Beams D. Chen;S. Cheng;T.D. Gerhardt
  3. ASME Journal of Electronic Packaging v.114 Effects of Thickness on Thermal Stresses in a Thin Solder or Adhesive Layer A.-Y. Kuo
  4. ASME Journal of Electronic Packaging v.113 Thermal Stresses and Free-Edge Effects in Laminated Beams: A Variational Approach Using Stress Functions W.-L. Yin
  5. ASME Journal of Electronic Packaging v.114 Refined Variational Solutions of the Interfacial Thermal Stresses in a Laminated Beam W.-L. Yin
  6. 대한용접학회지 v.18 no.1 클래딩 자유단의 열응력 해석 김형남;최성남;장기상
  7. ASME Winter Annual Meeting no.Paper. 89-WA/EEP-14 Thermal Stresses in Compliantly-Jointed Materials J.C. Glaser
  8. Advanced Calculus for Application(2nd Edition) F.B. Hilderbrand
  9. Ph.D. Dissertation. UW-Madison The Analysis of Free-Edge Effects of a Bilayered Structure due to Phase Change and Variable Temperature Distribution H.N. Kim
  10. Journal of Thermal Spray Technology v.6 Thermal Barrier Coating Life Modeling in Aircraft Gas Turbine Engines D.M. Nissley