Abstract

Longitudinal elastic modulus of thermal barrier coating (TBC) is one of the most important mechanical properties which is essential to the calculation such as thermal stress, etc. The elasticmodulus of segmented TBC was evaluated by the static and dynamic bending of composite beam. As a result, it was found that the static elasticmodulus was lower than the dynamic elasticmodulus, and the staticmodulus by low strain range showed a tendency to approximate to the value of dynamic modulus. In addition, the compressive elasticmodulus by static bending was slightly higher than the tensile elasticmodulus. They were because of the nonlinearity of segmented TBC. On the other hand, the dynamic elasticmodulus of the other conventional TBC coincided with the static elastic modulus. Further, the compressive elastic modulus by static bending coincided with the tensile elasticmodulus.

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