Prediction of critical rupture of plasma-sprayed yttria stabilized zirconia thermal barrier coatings under burner rig test via finite element simulation and in-situ acoustic emission technique

doi:10.1016/j.surfcoat.2019.03.063

	Prediction of critical rupture of plasma-sprayed yttria stabilized zirconia thermal barrier coatings under burner rig test via finite element simulation and in-situ acoustic emission technique
	Wang, L.; Ming, C.; Zhong, X. H.; Ni, J. X.; Tao, S. Y.; Zhou, F. F.; Wang, Y.
刊名	SURFACE & COATINGS TECHNOLOGY
	2019-06-15
卷号	367 页码:58
关键词	Thermal barrier coatings (TBCs) Burner rig test Failure Finite element simulation Acoustic emission
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2019.03.063
文献子类	Article; Proceedings Paper
英文摘要	In the current work, the yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs) have been fabricated by atmospheric plasma spraying. The failure mechanism of the TBCs during burner rig test (BRT) has been investigated via finite element modeling (FEM) and in-situ acoustic emission (AE) technique systematically. During the BRT, the oxygen-propane flame was heated onto the surface of the coating samples with the dwell time 3 min, then the surface and the backside of the coating samples were cooled by the compressed air simultaneously for 3 min. This can be viewed as one thermal cycle. Then repeat the same heating and cooling process. The history and distribution of the temperature along the through-thickness direction of the coating samples has been obtained via FEM, and the residual stress at different stages has been also calculated. The FEM results have indicated that large tensile stress and compressive stress existed at the heating stage and cooling stage of each thermal cycle, respectively. The crack propagation tends to occur at the initial period of heating stage in the BRT process. The in-situ acquisition of the AE signals during the BRT has also been adopted. The crack propagation patterns have been obtained based on the analysis of AE signals. The filtering technique has been used to exclude the disturbance of the noise in the process of BRT in order to capture the actual and effective AE signals which represent the crack propagation and the deformation of the coating systems. Based on the characteristic waveform of effective AE signals, the Fast Fourier Transformation (FFT) and wavelet transformation has been adopted to analyze the key distribution range of the amplitude and frequency. The investigation results indicate that the acquired AE signals during BRT mainly include signals which came from the plastic deformation of the substrate and creep of each layers, propagation of the vertical crack and propagation of the interfacial cracks (horizontal crack). The detailed failure mechanisms of the TBCs during BRT have been clarified in the current work.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27047]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Wang, L.,Ming, C.,Zhong, X. H.,et al. Prediction of critical rupture of plasma-sprayed yttria stabilized zirconia thermal barrier coatings under burner rig test via finite element simulation and in-situ acoustic emission technique[J]. SURFACE & COATINGS TECHNOLOGY,2019,367:58.
APA	Wang, L..,Ming, C..,Zhong, X. H..,Ni, J. X..,Tao, S. Y..,...&Wang, Y..(2019).Prediction of critical rupture of plasma-sprayed yttria stabilized zirconia thermal barrier coatings under burner rig test via finite element simulation and in-situ acoustic emission technique.SURFACE & COATINGS TECHNOLOGY,367,58.
MLA	Wang, L.,et al."Prediction of critical rupture of plasma-sprayed yttria stabilized zirconia thermal barrier coatings under burner rig test via finite element simulation and in-situ acoustic emission technique".SURFACE & COATINGS TECHNOLOGY 367(2019):58.