A lifetime prediction method based on Cumulative Flaw Length Theory

被引：4

作者：

Boccaccini, D. N. ^{[1
]}

Maioli, M. ^{[2
]}

Cannio, M. ^{[1
]}

Dlouhy, I. ^{[3
]}

Romagnoli, M. ^{[1
]}

Leonelli, C. ^{[1
]}

Boccaccini, A. R. ^{[4
]}

机构：

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

[2] Dipartimento Matemat, I-41100 Modena, Italy

[3] ASCR, Inst Phys Mat, CZ-61662 Brno, Czech Republic

[4] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, D-91058 Erlangen, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 06期

关键词：

Non-destructive evaluation; Residual stress; Thermal shock resistance; Mullite; Cumulative Flaw Length Theory; THERMAL-SHOCK DAMAGE; HIGH-TEMPERATURE; CERAMICS; BEHAVIOR; FRACTURE;

D O I：

10.1016/j.jeurceramsoc.2011.11.042

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：

Ultrasonic pulse velocity testing (UPVT) was carried out to perform non-destructive quality control of refractory plates. Used in conjunction with fracture mechanics, ultrasonic velocity measurements have proved a powerful technique for detecting, positioning and sizing internal voids and cracks in the samples, originated from the manufacturing process. Two cordierite-mullite refractory compositions exhibiting different microstructure and crack propagation behaviour were characterized through their lifetime during which they were subjected to thermal shock loading. In this paper, a new statistical method is proposed which allows to estimate the lifetime when the stress state that will be applied in service (loading) and the scattering of the ultrasonic velocity data in the as-received state are known. Since this lifetime prediction method is based on a non-destructive technique, it could be implemented into a code in an automatic quality control device for continuous lifetime estimation. The correlation between crack propagation behaviour and thermal shock resistance is discussed and semi-empirical models were developed to predict the service life of refractory plates from the measured values of ultrasonic velocities on as-received samples. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1175 / 1186

页数：12

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