Residual Stress and Damage Evolution in TBCs by Optical Method

Feng Hui Wang; Cheng Guang Zhang; Hong Wang

doi:10.4028/www.scientific.net/KEM.324-325.1047

Paper Titles

Studies of Fuel-Air Mixture Explosion Characteristics and Structure Fracture and Damage in Large-Scale Metal Oil Storage Tank
p.1031

Crystal Plasticity Analysis of Thermal Deformation and Dislocation Accumulation in ULSI Cells
p.1035

Numerical Investigation on the Crack Propagation in a Flat Stiffened Panel
p.1039

Reconstruction of the Material Probabilistic S-N Relations under Fatigue Life Following Lognormal Distribution I-without Given Confidence
p.1043

Residual Stress and Damage Evolution in TBCs by Optical Method
p.1047

Stress Intensity Factor of Notch/Crack Configuration under Bending Load for Brittle Materials
p.1051

Behavior and Fracture Mechanism of Brittle Rock with Pre-Existing Parallel Cracks
p.1055

Prediction of Crack Propagation under Dynamic Loading Conditions by Using the Enhanced Point Collocation Meshfree Method
p.1059

A Numerical Study and Design of Turbine Blade under High Temperature and Rotational Speed Using FEM
p.1063

HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325Residual Stress and Damage Evolution in TBCs by...

Residual Stress and Damage Evolution in TBCs by Optical Method

Abstract:

In recently years, ruby fluorescence spectroscopy has been demonstrated as a powerful technique for monitoring residual stress evolution in the thermally grown oxide scale in thermal barrier coatings(TBC) systems. The measured residual stresses, in turn can be used to monitor evolution of damage in the coatings. Effective use of this technology for real time damage monitoring require the identification of strength in measured stresses that can be used as indicators of damage evolution.the present work focuses on studying the evolution of residual stresses in TBC systems during oxidation. The coating are atmospheric plasma sprayed (APS), the residual stress were measured at different oxidation time and to identify critical features so as to be used as indicators of failure in TBCs.