Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings
It has been acknowledged that stresses within a thermal barrier coating (TBC) and its durability are significantly affected by the coating interfaces. This paper presents a finite element approach for stress analysis of the plasma sprayed TBC system, using three-dimensional (3D) coating interfaces....
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/41687/ |
| _version_ | 1848796331144904704 |
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| author | Kyaw, Si Jones, Arthur Jepson, Mark A.E. Hyde, Tom Thomson, Rachel C. |
| author_facet | Kyaw, Si Jones, Arthur Jepson, Mark A.E. Hyde, Tom Thomson, Rachel C. |
| author_sort | Kyaw, Si |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | It has been acknowledged that stresses within a thermal barrier coating (TBC) and its durability are significantly affected by the coating interfaces. This paper presents a finite element approach for stress analysis of the plasma sprayed TBC system, using three-dimensional (3D) coating interfaces. 3D co-ordinates of the coating surfaces were measured through 3D reconstruction of scanning electron microscope (SEM) images. These co-ordinates were post processed to reconstruct finite element models for use in stress analyses. A surface profile unit cell approach with appropriate boundary conditions was applied to reduce the problem size and hence computation time. It has been shown that for an identical aspect ratio of the coating interface, interfacial out-of-plane stresses for 3D models are around twice the values predicted using 2D models. Based on predicted stress development within the systems, possible crack development and failure mechanisms of the TBC systems can be predicted. |
| first_indexed | 2025-11-14T19:46:17Z |
| format | Article |
| id | nottingham-41687 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:46:17Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-416872020-05-04T18:38:36Z https://eprints.nottingham.ac.uk/41687/ Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings Kyaw, Si Jones, Arthur Jepson, Mark A.E. Hyde, Tom Thomson, Rachel C. It has been acknowledged that stresses within a thermal barrier coating (TBC) and its durability are significantly affected by the coating interfaces. This paper presents a finite element approach for stress analysis of the plasma sprayed TBC system, using three-dimensional (3D) coating interfaces. 3D co-ordinates of the coating surfaces were measured through 3D reconstruction of scanning electron microscope (SEM) images. These co-ordinates were post processed to reconstruct finite element models for use in stress analyses. A surface profile unit cell approach with appropriate boundary conditions was applied to reduce the problem size and hence computation time. It has been shown that for an identical aspect ratio of the coating interface, interfacial out-of-plane stresses for 3D models are around twice the values predicted using 2D models. Based on predicted stress development within the systems, possible crack development and failure mechanisms of the TBC systems can be predicted. Elsevier 2017-03-23 Article PeerReviewed Kyaw, Si, Jones, Arthur, Jepson, Mark A.E., Hyde, Tom and Thomson, Rachel C. (2017) Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings. Materials & Design . ISSN 0264-1275 (In Press) Thermal barrier coatings; Finite element analysis; Surface profile; Stress analysis; Failure mechanisms https://doi.org/10.1016/j.matdes.2017.03.067 doi:10.1016/j.matdes.2017.03.067 doi:10.1016/j.matdes.2017.03.067 |
| spellingShingle | Thermal barrier coatings; Finite element analysis; Surface profile; Stress analysis; Failure mechanisms Kyaw, Si Jones, Arthur Jepson, Mark A.E. Hyde, Tom Thomson, Rachel C. Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title | Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title_full | Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title_fullStr | Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title_full_unstemmed | Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title_short | Effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| title_sort | effects of three-dimensional coating interfaces on thermo-mechanical stresses within plasma spray thermal barrier coatings |
| topic | Thermal barrier coatings; Finite element analysis; Surface profile; Stress analysis; Failure mechanisms |
| url | https://eprints.nottingham.ac.uk/41687/ https://eprints.nottingham.ac.uk/41687/ https://eprints.nottingham.ac.uk/41687/ |