Development of process-based discretized model for ceramic thermal barrier coatings

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K03847
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 18010:Mechanics of materials and materials-related
• Research Institution: Tokyo University of Science
• Principal Investigator: Arai Masayuki 東京理科大学, 工学部機械工学科, 教授 (40371314)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: セラミック遮熱コーティング / バイオミメティクス / 微視的構造 / Brickモデル / Cohesiveモデル / 平面充填構造体 / 破壊靭性値 / 新材料

Outline of Final Research Achievements

In this study, in order to simulate numerically the inelastic deformation and damage process in TBCs on the surface of gas turbine blades, we developed a new micro-model by combining the brick model and the nonlinear cohesive model. The obtained results showed that the complex inelastic deformation and damage processes could be simulated properly. In addition, the brick model was extended to a plane-packed tessellated structure, and numerical analysis was performed. The results showed that high fracture toughness can be achieved by controlling the number of vertices and the loading direction.

Free Research Field

材料強度学

Academic Significance and Societal Importance of the Research Achievements

本研究を通じて得られた成果により，TBCの微視的構造を起点としてバイオミメティクスによる新しい微視的構造概念を得ることができた。これらの成果により，効率的に新しい材料の開発に資することが可能となった。