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Micro-porosity as damage indicator for characterizing cyclic thermal shock-induced anisotropic damage in oxide/oxide ceramic matrix composites | |
Yang ZM(杨正茂)1; Liu H2; Yuan H2 | |
Corresponding Author | Yuan, Huang(yuan.huang@tsinghua.edu.cn) |
Source Publication | ENGINEERING FRACTURE MECHANICS |
2019-10-15 | |
Volume | 220Pages:11 |
ISSN | 0013-7944 |
Abstract | Ceramic matrix composites display complex mechanical behavior under thermo-mechanical loading conditions. The present work focuses on micro-structural evolution and resultant macroscopic property representation of the composites after cyclic thermal shocks. Micro-structural investigation reveals that variations of the hierarchical porosity in the matrix characterize the collective behavior of micro-structural evolution in the material. Cyclic thermal shocks induce thermo-mechanical damage and lead to increasing matrix porosity. Material damage development is driven by elastic strain energy density which is related to the matrix porosity increment. Experiments confirm that the anisotropic damage can be represented by the porosity increment accurately. The porosity provides a meaningful model for the thermal shock damage evolution in the anisotropic composites. |
Keyword | Ceramic matrix composite Cyclic thermal shock Micromechanical damage Thermo-mechanical damage Hierarchical porosity |
DOI | 10.1016/j.engfracmech.2019.106669 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000487813100019 |
WOS Keyword | POROUS SINTERED METALS ; THERMOMECHANICAL DAMAGE ; OXIDE FIBERS ; BEHAVIOR ; PERFORMANCE ; EVOLUTION ; CRACKING ; FATIGUE ; MODEL |
WOS Research Area | Mechanics |
WOS Subject | Mechanics |
Funding Project | China Natural Science Foundation[11572169] ; China Natural Science Foundation[51775294] |
Funding Organization | China Natural Science Foundation |
Classification | 二类/Q1 |
Ranking | 1 |
Contributor | Yuan, Huang |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/80646 |
Collection | 空天飞行科技中心 |
Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 2.Tsinghua Univ, Sch Aerosp Engn, Beijing, Peoples R China |
Recommended Citation GB/T 7714 | Yang ZM,Liu H,Yuan H. Micro-porosity as damage indicator for characterizing cyclic thermal shock-induced anisotropic damage in oxide/oxide ceramic matrix composites[J]. ENGINEERING FRACTURE MECHANICS,2019,220:11. |
APA | 杨正茂,Liu H,&Yuan H.(2019).Micro-porosity as damage indicator for characterizing cyclic thermal shock-induced anisotropic damage in oxide/oxide ceramic matrix composites.ENGINEERING FRACTURE MECHANICS,220,11. |
MLA | 杨正茂,et al."Micro-porosity as damage indicator for characterizing cyclic thermal shock-induced anisotropic damage in oxide/oxide ceramic matrix composites".ENGINEERING FRACTURE MECHANICS 220(2019):11. |
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Jp2019405.pdf(1179KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download |
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