Shear edge tests: a benchmark in investigating the influence of different surface pretreatment methods on the shear stress of intrinsically manufactured metal-CFRP hybrids
Shear edge tests: a benchmark in investigating the influence of different surface pretreatment methods on the shear stress of intrinsically manufactured metal-CFRP hybrids
复制标题
剪切边缘测试：研究不同表面预处理方法对本征制造的金属-CFRP 混合材料剪切应力影响的基准
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
K. Weidenmann
中科院分区：
文献类型：
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作者：
C. Zinn;M. Schaper;J. Gonzalez;D. Meiners;Z. Wang;T. Troester;F. Pottmeyer;K. Weidenmann
目前，环境保护和有效的能源和资源利用是工业部门的关键主题。相比之下，对舒适性、移动性和保护性的需求逐渐增加，并导致体重大幅增加。特别是在汽车和航空航天工业中，为确保轻质结构的高效制造做出了巨大努力。因此，一个即将到来的趋势是由应用的混合结构制造的创新程序。其中之一是树脂传递模塑工艺，该工艺可确保高度自动化的一步制造由金属和碳纤维增强塑料（CFRP）组成的混合结构。在许多情况下，在不同材料之间产生坚固耐用的连接是主要挑战之一。在这项研究中，不同的表面预处理方法的剪切强度的混合结构的铝或钢和碳纤维布的影响进行了调查。为了消除弯矩和特定材料特性的影响，进行了剪切边缘测试，该测试能够实现纯剪切载荷。此外，还分析了其破坏行为。结果表明，剪切边缘测试是一个很好的基准测试，以获得精确的界面性能，如剪切应力和断裂功。使用表面预处理方法可以显著增强这些性能。
At the present time, environmental protection and efficient energy and resource usage are key topics in the industrial sector. In contrast, the desire for comfort, mobility and protection increases progressively and leads to an immense weight gain. Particularly, in the automotive and aerospace industry, strong efforts are made to ensure an efficient manufacturing of lightweight structures. Thereby, an upcoming trend is represented by the application of hybrid structure manufactured by innovative procedures. One of these is the resin transfer moulding procedure, which ensures a highly automated one-step manufacturing of hybrid structures consisting of metal and carbon fibre-reinforced plastics (CFRP). In many cases, the generation of a strong and durable connection between the dissimilar materials is one of the major challenges. In this study, the influence of various surface pretreatment methods on the shear strength of the hybrid structures out of aluminium or steel and CFRP is investigated. In order to eliminate the influence of bending moments and specific material properties, shear edge tests, which enable a pure shear load, are carried out. Furthermore, the failure behaviour is analysed. It is shown that the shear edge test represents an excellent benchmark test to obtain precise interface properties such as shear-stress and fracture work. These properties can be significantly enhanced using surface pretreatment methods.