Failure Analysis of Gas Turbine Blades

Long-term gas turbine operation leads to the structural degradation of superalloy blades there is a change in a number, shape and size of γ'-phase particles and in carbide amounts, distribution and composition. The formation of close-packed topological phases (σ, μ, λ-phases) can also be observed. In a number of cases, the structural degradation results in a significant change in the mechanical properties, which can cause blade failures.

[1]  Zdzislaw Mazur,et al.  Failure analysis of a gas turbine blade made of Inconel 738LC alloy , 2005 .

[2]  N. Vardar,et al.  Failure analysis of gas turbine blades in a thermal power plant , 2007 .

[3]  Xishan Xie,et al.  Gamma prime coarsening and age-hardening behaviors in a new nickel base superalloy , 2004 .

[4]  Ibrahim de Cerqueira Abud,et al.  Microstructural aspects of the failure analysis of nickel base superalloys components , 2005 .

[5]  Gessner Goodrich Hawley,et al.  The Condensed chemical dictionary , 1971 .

[6]  Oral Mehmed,et al.  A Review of Recent Aeroelastic Analysis Methods for Propulsion at NASA Lewis Research Center , 1993 .

[7]  Marc Thomas,et al.  The effect of long term exposure in oxidising and corroding environments on the tensile properties of two gamma-TiAl alloys , 2006 .

[8]  C. Persson,et al.  Evaluation of Service Induced Damage and Restoration of Cast Turbine Blades , 1992 .

[9]  D. Owen,et al.  Finite elements in plasticity : theory and practice , 1980 .

[10]  B. J. Wicks,et al.  Creep Failure Assessment of a Turbine Disc Using Non-Linear Finite Element Method , 1999 .

[11]  Enrique J. Herrera,et al.  Failure of gas turbine blades , 2002 .

[12]  J. S. Rao,et al.  Natural Frequencies of Turbine Blading -- A Survey , 1973 .

[13]  M. R Khajavi,et al.  FAILURE OF FIRST STAGE GAS TURBINE BLADES , 2004 .

[14]  Susan E. Cunningham,et al.  Damage Tolerance Based Life Prediction in Gas Turbine Engine Blades Under Vibratory High Cycle Fatigue , 1995 .

[15]  Jianfu Hou,et al.  An investigation of fatigue failures of turbine blades in a gas turbine engine by mechanical analysis , 2002 .

[16]  Ashok K Ray,et al.  Structure property correlation study of a service exposed first stage turbine blade in a power plant , 2006 .

[17]  L. Kunz,et al.  High-temperature ultra-high cycle fatigue damage of notched single crystal superalloys at high mean stresses , 2005 .

[18]  M. Nakamura,et al.  Plastic deformation of single crystals of TiSi2 , 1994 .