Microstructure-based modelling and experimental investigation of crack propagation in glass-alumina functionally graded materials

被引：29

作者：

Cannillo, V. ^{[1
]}

Manfredini, T. ^{[1
]}

Montorsi, M. ^{[1
]}

Siligardi, C. ^{[1
]}

Sola, A. ^{[1
]}

机构：

[1] Univ Modena, Dipartimento Ingn Mat & Ambiente, I-41100 Modena, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 15期

关键词：

microstructure-final; fracture; Al2O3; glass; functionally graded materials; crack propagation;

D O I：

10.1016/j.jeurceramsoc.2005.10.003

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The aim of the present work was the determination of the fracture mechanisms in glass-alumina functionally graded materials (FGMs). The investigation was performed by means of a combined approach based on microscale computational simulations, which provided for an accurate modelling of the actual FGM microstructure, and experimental analysis. The numerical results proved that microstructural defects, such as pores, deeply influenced the damage evolution. On the contrary, the minimization of the mismatch in the coefficients of thermal expansion of the ingredient materials allowed to obtain low thermal residual stresses, which did not relevantly affect the crack propagation. In order to support the numerical model, microindentation tests were performed on the cross-section of FGM specimens and the experimentally observed crack paths were compared to the computationally predicted ones. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3067 / 3073

页数：7

共 36 条

[1]

[Anonymous], RECENT RES DEV MAT S

[2] Statistical fracture modeling: crack path and fracture criteria with application to homogeneous and functionally graded materials [J].

Becker, TL ;

Cannon, RM ;

Ritchie, RO .

ENGINEERING FRACTURE MECHANICS, 2002, 69 (14-16) :1521-1555

[3] Glass-alumina functionally graded materials: their preparation and compositional profile evaluation [J].

Cannillo, V. ;

Manfredini, T. ;

Siligardi, C. ;

Sola, A. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (13) :2685-2693

[4] Microscale computational simulation and experimental measurement of thermal residual stresses in glass-alumina functionally graded materials [J].

Cannillo, V ;

Montorsi, M ;

Siligardi, C ;

Sola, A ;

de Portu, G ;

Micele, L ;

Pezzotti, G .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (08) :1411-1419

[5] Preparation and experimental characterization of glass-alumina functionally graded materials [J].

Cannillo, V ;

Manfredini, T ;

Siligardi, C ;

Sola, A .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (06) :993-1001

[6] Investigation of the mechanical properties of Mo-reinforced glass-matrix composites [J].

Cannillo, V ;

Manfredini, T ;

Montorsi, M ;

Boccaccini, AR .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2004, 344 (1-2) :88-93

[7] Computational simulations for the assessment of the mechanical properties of glass with controlled porosity [J].

Cannillo, V ;

Leonelli, C ;

Manfredini, T ;

Montorsi, M ;

Boccaccini, AR .

JOURNAL OF POROUS MATERIALS, 2003, 10 (03) :189-200

[8] Numerical modelling of the fracture behaviour of a glass matrix composite reinforced with alumina platelets [J].

Cannillo, V ;

Pellacani, GC ;

Leonelli, C ;

Boccaccini, AR .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2003, 34 (01) :43-51

[9] Numerical models for thermal residual stresses in Al2O3 platelets/borosilicate glass matrix composites [J].

Cannillo, V ;

Leonelli, C ;

Boccaccini, AR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 323 (1-2) :246-250

[10] A simple approach for determining the in situ fracture toughness of ceramic platelets used in composite materials by numerical simulations [J].

Cannillo, V ;

Corradi, A ;

Leonelli, C ;

Boccaccini, AR .

JOURNAL OF MATERIALS SCIENCE LETTERS, 2001, 20 (20) :1889-1891

← 1 2 3 4 →