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首页> 外文期刊>High temperature materials and processes >Finite Element Simulations on Erosion and Crack Propagation in Thermal Barrier Coatings
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Finite Element Simulations on Erosion and Crack Propagation in Thermal Barrier Coatings

机译：热障涂层中冲蚀和裂纹扩展的有限元模拟

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摘要

Erosion of thermal barrier coatings occurs when atmospheric or carbon particles from the combustion chamber are ingested into aviation turbine engines. To understand the influence of erosion on the service life of thermal barrier coatings, we introduce the erosion and crack propagation models, and then by using finite element simulations, determine the relationship between the penetrating depth, the maximum principle stress and impingement variables such as velocity and angle. It is shown that cracks nucleate and extend during the erosion process and the length of a crack increases with the increase of the particle velocity and impact angle.
机译：当来自燃烧室的大气或碳颗粒被吸入航空涡轮发动机时，就会发生隔热涂层的腐蚀。为了了解腐蚀对隔热涂层使用寿命的影响，我们介绍了腐蚀和裂纹扩展模型，然后通过有限元模拟，确定渗透深度，最大主应力和诸如速度之类的冲击变量之间的关系。和角度。结果表明，裂纹在腐蚀过程中成核并扩展，裂纹的长度随着粒子速度和冲击角的增加而增加。

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  • 来源
    《High temperature materials and processes》 |2015年第4期|387-393|共7页
  • 作者

    Z. S. Ma; L. H. Fu; L. Yang; Y. C. Zhou; C. Lu;

  • 作者单位

    Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Hunan 411105, China;

    Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Hunan 411105, China;

    Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Hunan 411105, China;

    Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Hunan 411105, China;

    Department of Mechanical Engineering, Curtin University, Perth, WA 6845, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    thermal barrier coatings; erosion; crack propagation; finite element simulation;

    机译：隔热涂层;侵蚀;裂纹扩展有限元模拟;

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