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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 AuthorYuan, Huang(yuan.huang@tsinghua.edu.cn)
Source PublicationENGINEERING FRACTURE MECHANICS
2019-10-15
Volume220Pages:11
ISSN0013-7944
AbstractCeramic 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.
KeywordCeramic matrix composite Cyclic thermal shock Micromechanical damage Thermo-mechanical damage Hierarchical porosity
DOI10.1016/j.engfracmech.2019.106669
Indexed BySCI ; EI
Language英语
WOS IDWOS:000487813100019
WOS KeywordPOROUS SINTERED METALS ; THERMOMECHANICAL DAMAGE ; OXIDE FIBERS ; BEHAVIOR ; PERFORMANCE ; EVOLUTION ; CRACKING ; FATIGUE ; MODEL
WOS Research AreaMechanics
WOS SubjectMechanics
Funding ProjectChina Natural Science Foundation[11572169] ; China Natural Science Foundation[51775294]
Funding OrganizationChina Natural Science Foundation
Classification二类/Q1
Ranking1
ContributorYuan, Huang
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80646
Collection空天飞行科技中心(筹)
Affiliation1.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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