Characterisation of the scratch resistance of annealed and tempered architectural glass
Characterisation of the scratch resistance of annealed and tempered architectural glass
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DOI：
10.1016/j.tsf.2011.04.104
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发表时间：
2012-04-02
期刊：
影响因子：
2.1
通讯作者：
Weinhold, W. P.
中科院分区：
文献类型：
--
作者：
Schneider, J.;Schula, S.;Weinhold, W. P.
玻璃的易碎性阻止了玻璃在建筑中的真实的结构应用，直到20世纪90年代。作为密集研究的结果，如今钢化建筑钠钙硅（SLS）玻璃由于其上级机械强度和耐热断裂性而特别适用于现代建筑、结构和太阳能应用。钢化玻璃在土木工程中应用的问题是对划痕的敏感性和表面划痕的可见性。为了分析商业退火和热回火玻璃对划痕的敏感性，使用通用表面测试仪进行划痕测试。试验表明，裂纹宽度在很大程度上取决于压头几何形状、所用法向载荷和玻璃类型（退火玻璃或钢化玻璃）。在刮擦面处的玻璃碎片的宏观可见的碎裂使刮擦轨迹从典型的20-30 μ m加宽到200-300 μ m。钝压头被确定为在比锋利压头更低的法向力下引起碎裂，并且发现钢化玻璃对于碎裂更敏感。相反，压痕深度和永久变形并没有显着改变退火和钢化玻璃之间。(C)2011 Elsevier B. V.保留所有权利。
The brittle nature of glass prevented real structural applications of glass in architecture up to the 1990s. As a result of intense research, nowadays tempered architectural soda-lime-silica (SLS) glasses are particular capable for modern architectural, structural and solar applications due to their superior mechanical strength and resistance to thermal break. The problem for the application of tempered glass in civil engineering is the sensitivity to scratching and the visibility of the scratches on the surface. To analyse the sensitivity to scratching for commercial annealed and thermally tempered glass scratch tests were performed with the Universal Surface Tester. The tests have shown that the crack width strongly depends on the indenter geometry, the used normal load and the type of glass (annealed or tempered glass). Macroscopically visible chipping of glass fragments at the scratch faces widens scratch tracks from typically 20-30 mu m to 200-300 mu m. Blunt indenters were identified to cause chipping at lower normal forces than sharp indenters and tempered glass was found to be more sensible for chipping. Contrary, the indentation depth and permanent deformation did not significantly change between annealed and tempered glass. (C) 2011 Elsevier B.V. All rights reserved.