Research Article
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 |
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