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Analysis of Thermomechanical Delamination Mechanisms in Segmented High-Temperature Protective Coatings and Design Maps for the Durable Coatings

Biao Li1,*

1 School of Aeronautics, Northwestern Polytechnical University, Xi’an, 710072, China

* Corresponding Author: Biao Li. Email: email

The International Conference on Computational & Experimental Engineering and Sciences 2024, 30(1), 1-1. https://doi.org/10.32604/icces.2024.012788

Abstract

Protective coatings play a crucial role in preserving high-temperature engineering components from environmental degradation [1-3]. The durability of these coatings is crucial for maintaining the structural integrity of the components. Introducing a segmented microstructure was recognized as an effective strategy for enhancing the strain tolerance of coatings by mitigating the in-plane stiffness of the coatings, thereby alleviating interface stresses and delamination driving forces. While previous studies on delamination mechanisms in high-temperature protective coatings have predominantly focused on either pure mechanical loading or pure thermal loading conditions (i.e., residual stress) due to their ease of implementation, the combined influence of both loads remains relatively unexplored. This work systematically studies delamination problems in segmented multilayered high-temperature coatings subjected to thermomechanical loadings using computational fracture mechanics [4]. A representative unit cell model is introduced, which is used to analyze coatings over a broad range of material properties, geometries, and loads. The findings suggest that, for a given coatings system, the mechanical load carried by the top-coat layer is the only force driving delamination along the top-coat/bond-coat interface. A mathematical model is established using combined multiple regression analyses and the design of experimental method to evaluate the delamination driving forces and rank the importance of various influential factors. Design maps are constructed to facilitate the development of durable coatings.

Cite This Article

APA Style
Li, B. (2024). Analysis of thermomechanical delamination mechanisms in segmented high-temperature protective coatings and design maps for the durable coatings. The International Conference on Computational & Experimental Engineering and Sciences, 30(1), 1-1. https://doi.org/10.32604/icces.2024.012788
Vancouver Style
Li B. Analysis of thermomechanical delamination mechanisms in segmented high-temperature protective coatings and design maps for the durable coatings. Int Conf Comput Exp Eng Sciences . 2024;30(1):1-1 https://doi.org/10.32604/icces.2024.012788
IEEE Style
B. Li, “Analysis of Thermomechanical Delamination Mechanisms in Segmented High-Temperature Protective Coatings and Design Maps for the Durable Coatings,” Int. Conf. Comput. Exp. Eng. Sciences , vol. 30, no. 1, pp. 1-1, 2024. https://doi.org/10.32604/icces.2024.012788



cc Copyright © 2024 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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