514 Interface Fatigue Crack Propagation in Ceramic Thermal Barrier Coatings
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概要
- 論文の詳細を見る
Failure of thermal barrier coating (TBC) layer, especially spalling-off of ceramic coating layer, results not only in degradation of thermal barrier properties. but also in crucial damage to turbine components. The spalling of ceramic coating layer will follow the crack initiation on propagation along the interface between ceramic top-layer and metal bonding layer. In the present study fatigue crack growth tests of TBC with various porosity were carried out at room and elevated temperatures. It is found that the interface crack induced by a pre-introduced notch propagates along the interface under mixed mode condition, and its growth behavior can be well characterized by using the parameter [numerical formula]. which corresponds to the change of energy release rate. It is also found that the crack propagation resistance decreases with the increase of the porosity of the top ceramic coating. The crack propagation resistance also becomes weaker under the elevated temperature than under room temperature.
- 一般社団法人日本機械学会の論文
著者
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MUTOH Yoshiharu
Department of Mechanical Engineering, Nagaoka University of Technology
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Xu Jin
Department of Thoracic Surgery, Kanazawa Medical University
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MIYASHITA Yukio
Department of Mechanical Engineering, Nagaoka University of Technology
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Miyashita Yukio
Department Of Mechanical Engineering Nagaoka Unversty Of Technology
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka Unversty Of Technology
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka University Of Technology
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Mutoh Yoshiharu
Dept. Of Mechanical Engineering Nagaoka Univ. Of Tech.
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Miyashita Yukio
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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Xu J‐q
School Of Civil Engineering And Mechanics Shanghai Jiaotong Univ.
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Xu Jin
Department Of Mechanical Engineering Nagaoka University Of Technology
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Bernardo G.
Department of mechanical engineering, Nagaoka university of technology
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Takahashi M.
Toshiba Co. Ltd.
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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Xu Jin
School Of Civil Engineering And Mechanics Shanghai Jiaotong Univ.
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Bernardo G.
Department Of Mechanical Engineering Nagaoka University Of Technology
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MUTOH Yoshiharu
Department of Material Science, Nagaoka University of Technology
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