Numerical Simulation Procedure for Modeling TGO Crack Propagation and TGO Growth in Thermal Barrier Coatings upon Thermal-Mechanical Cycling

Table 1

Material properties for TGO and metal substrate.

Material property	TGO	Metal substrate
Young’s modulus (GPa)	390	140
Poisson’s ratio	0.2	0.3
CTE (ppm/°C)	8.3	14.3
Creep exponent,	2.0	2.5
Creep prefactor,
Yielding stress,	At dwell time:  MPa; At cooling and heating: assumed to be elastic	°C,  MPa; °C,  MPa; vary linearly in between