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Experimental study of adhesively bonded joints with dissimilar composite laminates under different loading rates and ambient temperatures

机译:不同加载速率和环境温度下异种复合材料层合板粘接接头的实验研究

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摘要

An experimental study of the single-lap joints at different loading rates and ambient temperatures was investigated. In the experiment, a single lap joint was formed using plain woven glass fiber reinforced epoxy (GFRE) laminates, plain woven aramid fiber reinforced laminates (AFRE), and Araldite 138?M / HV998 epoxy adhesive. The composite laminates were produced using Vacuum-Assisted Resin Transfer Molding (VARTM) process. Adhesively bonded joints were created using similar and dissimilar adherends. Experiments were carried out under different loading rates (1?mm/min, 10?mm/min, 50?mm/min, 100?mm/min) and ambient temperatures (23°C,60°C,100°C). Stress–strain graphs were obtained for each experimental condition. It is seen that the maximum stress values increase as the loading rate increases in all single lap joints at all different temperatures. However, in all single lap joints, at all different loading rates, the maximum stress value decreases as the ambient temperature increases.
机译:对不同加载速率和环境温度下的单搭接接头进行了实验研究。在实验中,使用平纹玻璃纤维增强环氧树脂 (GFRE) 层压板、平纹编织芳纶纤维增强层压板 (AFRE) 和 Araldite 138?M/HV998环氧胶粘剂。复合层压板采用真空辅助树脂传递模塑 (VARTM) 工艺生产。使用相似和不同的粘附物创建粘合接合的接头。在不同的加载速率(1?mm/min、10?mm/min、50?mm/min、100?mm/min)和环境温度(23°C、60°C、100°C)下进行实验。获得每个实验条件的应力-应变图。可以看出,在所有不同温度下,所有单搭接接头的最大应力值随着加载速率的增加而增加。然而,在所有不同的载荷速率下,在所有单搭接接头中,最大应力值随着环境温度的升高而减小。

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