Fretting Fatigue Performance of Laminated, Pin-loaded Carbon Fiber Reinforced Polymer Straps

点击翻译按钮获取中文摘要

Carbon Fibre-Reinforced Polymers (CFRPs) are composite materials and can be expensive toproduce. Nevertheless, they are commonly used wherever high strength-to-weight ratio and rigidity are required like aerospace [1], automotive and civil engineering and a rising number of other applications. The use and the first applicable FRPs date back in 1967, where they were used as roler blade mountings in helicopters by Bölkow (Bo 209 Monsun) in Germany. Since then their use was extended in the sailing industry (rigging system) as well as the structural engineering (tower cranes, elevators, etc.). Laminated CFRP tensile straps undergo high tensile fatigue loads and what is worth further explore is their behaviour under such loads. These kind of straps were used in the study conducted at Empa, Switzerland in order to examine the fretting fatigue behaviour of pin-loaded straps [2]. This kind of research will have tremendous impact for CFRP tensile members used as suspenders for bridges [3].This research is mostly focused on pin-loaded straps [4], [5] and the outcome of their investigation is the better understanding and further improvement of their fatigue performance and behaviour. What is also expected is to determine the residual properties and the components that characterize the fretting fatigue behaviour, such as temperature progress, wear behaviour and displacement/time. The study is a combination of experiments and numerical analyses, as experiments will be carried out and numerical analyses will verify them and backwards.