In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method
By using a coupled acoustic emission (AE) and digital image correlation (DIC) technique, the failure behavior of air plasma sprayed thermal barrier coatings (TBCs) was investigated. The in-situ DIC observations show that the characteristics of AE signals, extracted from the fast Fourier transform, a...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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Elsevier S.A
2014
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/46122 |
| _version_ | 1848757472329728000 |
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| author | Zhou, M. Yao, W. Yang, X. Peng, Z. Li, K. Dai, C. Mao, W. Zhou, Y. Lu, Chunsheng |
| author_facet | Zhou, M. Yao, W. Yang, X. Peng, Z. Li, K. Dai, C. Mao, W. Zhou, Y. Lu, Chunsheng |
| author_sort | Zhou, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | By using a coupled acoustic emission (AE) and digital image correlation (DIC) technique, the failure behavior of air plasma sprayed thermal barrier coatings (TBCs) was investigated. The in-situ DIC observations show that the characteristics of AE signals, extracted from the fast Fourier transform, are closely related to the failure modes of a TBC system, which was applied to real-time reveal its damage evolution during tension. It is shown that there is a typical power-law relationship between the vertical crack density in coating and strain in substrate. A damage variable defined as a function of the cumulative AE events can be used to characterize the different fracture stages of a TBC system. With the increase of strain in substrate, the AE-b value estimated by the Gutenberg–Richter law varies from 2.0 at the initial regime to a plateau value of 1.2. |
| first_indexed | 2025-11-14T09:28:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-46122 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:28:38Z |
| publishDate | 2014 |
| publisher | Elsevier S.A |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-461222017-09-13T14:30:52Z In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method Zhou, M. Yao, W. Yang, X. Peng, Z. Li, K. Dai, C. Mao, W. Zhou, Y. Lu, Chunsheng Thermal barrier coating Digital image correlation Acoustic emission AE-b value Damage evolution By using a coupled acoustic emission (AE) and digital image correlation (DIC) technique, the failure behavior of air plasma sprayed thermal barrier coatings (TBCs) was investigated. The in-situ DIC observations show that the characteristics of AE signals, extracted from the fast Fourier transform, are closely related to the failure modes of a TBC system, which was applied to real-time reveal its damage evolution during tension. It is shown that there is a typical power-law relationship between the vertical crack density in coating and strain in substrate. A damage variable defined as a function of the cumulative AE events can be used to characterize the different fracture stages of a TBC system. With the increase of strain in substrate, the AE-b value estimated by the Gutenberg–Richter law varies from 2.0 at the initial regime to a plateau value of 1.2. 2014 Journal Article http://hdl.handle.net/20.500.11937/46122 10.1016/j.surfcoat.2013.12.010 Elsevier S.A restricted |
| spellingShingle | Thermal barrier coating Digital image correlation Acoustic emission AE-b value Damage evolution Zhou, M. Yao, W. Yang, X. Peng, Z. Li, K. Dai, C. Mao, W. Zhou, Y. Lu, Chunsheng In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title | In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title_full | In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title_fullStr | In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title_full_unstemmed | In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title_short | In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| title_sort | in-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: a coupled acoustic emission and digital image correlation method |
| topic | Thermal barrier coating Digital image correlation Acoustic emission AE-b value Damage evolution |
| url | http://hdl.handle.net/20.500.11937/46122 |