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Bond behaviour between CFRP laminates and steel members under different loading rates

机译：CFRP层压板与钢构件在不同加载速率下的粘结行为

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Carbon fibre reinforced polymers are widely used to strengthen steel structural elements. These structural elements are normally subjected to static, dynamic and fatigue loadings during their life-time. A number of studies have focused on the characteristics of CFRP sheets bonded to steel members under static, dynamic and fatigue loadings. However, there is a gap in understanding the bonding behaviour between CFRP laminates and steel members under impact loading. This paper shows the effect of different load rates from quasi-static to 300 x 10(3) mm/min on this bond. Two types of CFRP laminate, CFK 150/2000 and CFK 200/2000, were used to strengthen steel joints using Araldite 420 epoxy. The results show a significant bond strength enhancement under impact loading, whereas the high loading rates have little influence on the effective bond length. (C) 2016 Elsevier Ltd. All rights reserved.
机译：碳纤维增强聚合物广泛用于增强钢结构元素。这些结构元件在其使用寿命期间通常承受静态，动态和疲劳载荷。许多研究集中于在静态，动态和疲劳载荷下粘结到钢构件上的CFRP板的特性。但是，在了解CFRP层压板与钢构件在冲击载荷下的粘结性能方面存在差距。本文显示了从准静态到300 x 10（3）mm / min的不同加载速率对该键的影响。两种类型的CFRP层压板CFK 150/2000和CFK 200/2000，用于使用Araldite 420环氧树脂加固钢接头。结果表明，在冲击载荷下粘结强度显着提高，而高载荷速率对有效粘结长度影响很小。 （C）2016 Elsevier Ltd.保留所有权利。

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