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<p>The thermal barrier coating (TBC) system is a key technology for protecting the hot parts of many thermal systems. But, the TBC system will not operate normally after a certain life cycle due to the high temperature environment, the mechanical force and the vibration. In this study, a theoretical model composed of TBC, thermally grown oxide (TGO) and the substrate was constructed after verifying the theoretical model against FEA results. In the following step, the TGO growth rate, TGO layer thickness, and TBC thickness were optimized using the ideal point method and the D-optimal method for upgrading the performance of the TBC systems. Then, the magnitude of the induced force and the frequency of the vibration were investigated using design of experiments method. The results show that the strain of the theoretical model has been increased with increased creep. Also, at the same mechanical stress and the experimental points, the strain changes between 10000 and 1000 cycles/min is almost negligible, and the strain increases sharply as the frequency decreases from 100 cycles/min. The constructed temperature-vibration coupled characteristics made a scientific basis for designing the high-performance TBC systems.</p>

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A Study on Temperature-Vibration Coupled Effect Characterization for Thermal Barrier Coating Systems

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • Feng-Xun Li,
  • Jian-Ping Zhao,
  • Zhen-Zhe Li,
  • Tong Zhang,
  • Jian-Xin Wang

摘要

The thermal barrier coating (TBC) system is a key technology for protecting the hot parts of many thermal systems. But, the TBC system will not operate normally after a certain life cycle due to the high temperature environment, the mechanical force and the vibration. In this study, a theoretical model composed of TBC, thermally grown oxide (TGO) and the substrate was constructed after verifying the theoretical model against FEA results. In the following step, the TGO growth rate, TGO layer thickness, and TBC thickness were optimized using the ideal point method and the D-optimal method for upgrading the performance of the TBC systems. Then, the magnitude of the induced force and the frequency of the vibration were investigated using design of experiments method. The results show that the strain of the theoretical model has been increased with increased creep. Also, at the same mechanical stress and the experimental points, the strain changes between 10000 and 1000 cycles/min is almost negligible, and the strain increases sharply as the frequency decreases from 100 cycles/min. The constructed temperature-vibration coupled characteristics made a scientific basis for designing the high-performance TBC systems.