Material parameters for the evaluation of PA welds using laser extensometry

被引：8
作者：
Bieroegel, Christian
Grellmann, Wolfgang [1 ]
Fahnert, Thomas
Lach, Ralf
机构：
[1] Univ Halle Wittenberg, Ctr Engn, D-06099 Halle, Germany
[2] Univ Halle Wittenberg, Inst Polymer Mat, D-06217 Merseburg, Germany
[3] Polymer Serv GmbH Merseburg, D-06217 Merseburg, Germany
来源：
POLYMER TESTING | 2006年 / 25卷 / 08期
关键词：
polymer welds; laser extensometryl; acoustic emission analysis; local strain measurements; mechanical heterogeneity; glass fibre reinforced polyamide;
D O I：
10.1016/j.polymertesting.2006.07.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The deformation and fracture behaviour of welded polymer slabs under tensile stress has been investigated by laser extensometry. The necessity of a position-sensitive materials testing method for describing the properties of welds of polymers, and the special requirements for the testing and evaluation method, have been introduced. The mechanical heterogeneity H representing the ratio of the local strain differences and the integral strain has proven to be a good indicator for the evaluation of welding quality. The information got by means of this testing method was then compared to results obtained conventionally. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1024 / 1037
页数：14
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