Subcritical crack growth in Low Temperature Co-fired Ceramics under biaxial loading

被引：32
|
作者：
Bermejo, R. [1 ]
Supancic, P. [1 ,2 ]
Krautgasser, C. [2 ]
Morrell, R. [1 ,3 ]
Danzer, R. [1 ,2 ]
机构：
[1] Univ Leoben, Inst Struktur & Funkt Keram, A-8700 Leoben, Austria
[2] Mat Ctr Leoben, A-8700 Leoben, Austria
[3] Natl Phys Lab, Teddington TW11 0LW, Middx, England
来源：
ENGINEERING FRACTURE MECHANICS | 2013年 / 100卷
关键词：
Low Temperature Co-fired Ceramics; Environmentally assisted cracking; Fracture mechanics; Failure assessment; Lifetime prediction; 3 BALLS TEST; LIFETIME MEASUREMENTS; BRITTLE DISCS; STRENGTH; PROPAGATION; FRACTURE; WATER; TOUGHNESS; FLEXURE; GLASS;
D O I：
10.1016/j.engfracmech.2012.12.004
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The biaxial strength of Low Temperature Co-fired Ceramics was determined using the ballon-three-balls test in several environments (dry oil, air and water). Subcritical crack growth phenomenon was observed, activated by the prolonged presence of humidity at the specimen surface. Whereas high strength values were reached during high-rate testing in dry oil, up to a 50% lower strength was measured on specimens immersed in water tested for longer periods. Experiments in a relative dry environment have shown for the first time evidence of two different crack growth mechanisms in this material. A model has been implemented to interpret the experimental results. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：108 / 121
页数：14
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