Mechanical behaviour and lifetime modelling of self-healing ceramic-matrix composites subjected to thermomechanical loading in air

被引：48

作者：

Cluzel, C. ^{[1
]}

Baranger, E. ^{[1
]}

Ladeveze, P. ^{[1
]}

Mouret, A. ^{[2
]}

机构：

[1] PRES Univ Paris Sud, Univ Paris 06, LMT Cachan, ENS Cachan,CNRS,UMR8535, F-94235 Cachan, France

[2] SAFRAN Grp, F-33187 Les Cinq Chemins, Le Haillan, France

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2009年 / 40卷 / 08期

关键词：

Ceramic-matrix composites (CMCs); Ceramic fibre; Corrosion; Damage mechanics; STRESS-RUPTURE; CRACK-GROWTH; OXIDATION; INTERFACE; FATIGUE; FIBERS; DAMAGE; CREEP;

D O I：

10.1016/j.compositesa.2008.10.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The simulation of the behaviour and lifetime of composites with self-healing ceramic matrix requires the coupling of models issued from both mechanics and chemistry. The mechanical macromodel is based on a partitioning of damage according to the various degradation mechanisms. Analysis windows on the microscale enable the reconstruction of the crack network indicators and of the opening states of the cracks as functions of the loading. The self-healing mechanism is modelled by creating an oxide plug in an open crack and simulating the diffusion of oxygen through its evolving geometry. An evolution law for fibre strength as a function of oxygen concentration provides an illustration of the influence of complex thermomechanical loading on the composite's lifetime. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：976 / 984

页数：9

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