Fatigue properties of multifunctional metal- and carbon-fibre-reinforced polymers and intrinsic capabilities for damage monitoring

被引：16
作者：
Backe, S. [1 ]
Balle, F. [1 ,3 ]
Hannemann, B. [2 ]
Schmeer, S. [2 ]
Breuer, U. P. [2 ]
机构：
[1] Univ Kaiserslautern, Hybrid Mat Engn Grp, Inst Mat Sci & Engn WKK, POB 3049, D-67653 Kaiserslautern, Germany
[2] Tech Univ Kaiserslautern, Inst Composite Mat IVW GmbH, D-67663 Kaiserslautern, Germany
[3] Univ Freiburg, Fac Engn, Chair Engn Funct Mat, Dept Sustainable Syst Engn INATECH, D-79110 Freiburg, Germany
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2019年 / 42卷 / 01期
关键词：
fatigue; hybrid; microstructures; multifunctional composites; HIGH-PERFORMANCE; COMPOSITES; CFRP; TOLERANCE; DESIGN;
D O I：
10.1111/ffe.12878
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Carbon-fibre-reinforced polymers (CFRP) structures offer enhanced lightweight potential in comparison with monolithic metallic concepts. Brittle failure behaviour and the insufficient level of electrical conductivity limit the lightweight potential of composites. One promising new approach to solve these issues is the additional integration of metal fibres. Structural components are subjected to cyclic loads during their lifetime. Therefore, the present study focuses on the influence of additional steel fibre reinforcement on the fatigue behaviour of CFRP laminates. Magnetic properties are determined because of the deformation-induced phase transformation of the chosen austenitic steel fibres, which are also applied as intrinsic damage sensors. Interrupted fatigue tests are carried out accompanied by scanning electron microscopy to obtain differences in failure mechanisms. Beside a detailed overview of the steel fibre influence on the fatigue properties of conventional CFRP structures, the functional evidence of a new method for nondestructive testing by a magnet inductive measuring device is shown.
引用
收藏
页码：143 / 151
页数：9
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