湿热环境对Sikaflex-265铝合金粘接接头失效强度的影响

doi:10.13229/j.cnki.jdxbgxb20170629

摘要/Abstract

摘要： 为了研究湿热环境对车辆上粘接结构机械性能的影响,本文选取4个温度点和5个湿度点进行组合,对单搭接接头进行了试验测试。通过对试验数据进行统计分析,获得了接头平均失效强度随温度和湿度的变化规律。利用响应面分析判断湿热环境对接头失效强度影响的显著性,并获得了环境因素对试验结果影响的合理数学模型。研究结果表明:接头平均失效强度在一定湿度水平下随温度增加呈指数衰减,在一定温度水平下随着湿度增加呈二次多项式衰减,且温度对接头平均失效强度的影响更加显著。

关键词: 车辆工程, 粘接技术, 湿热环境, 强度预测, 响应面分析

Abstract: In order to study the effects of temperature and humidity on the mechanical properties of the bonding structure on the vehicle, four temperature and five humidity combinations were selected to test the performance of the single lap joint. Using statistical analysis of the experimental data, the variation rule of the average failure strength of the joints were obtained with the changes of temperature and humidity. The effects of temperature and humidity on the joint failure strength were analyzed, and a mathematical model of the effects of temperature and humidity on the experimental results was obtained by using the response surface analysis. The results show that the average failure strength of the joint is exponentially attenuated with the increase in temperature at certain humidity level, and decreases by quadratic polynomial with the increase in humidity at a certain temperature level. The effect of temperature on the joint failure strength is more significant than the effect of humidity.

Key words: vehicle engineering, adhesive technology, temperature and humidity, strength prediction, response surface analysis

中图分类号:

U463

那景新, 浦磊鑫, 范以撒, 沈传亮. 湿热环境对Sikaflex-265铝合金粘接接头失效强度的影响[J]. 吉林大学学报(工学版), 2018, 48(5): 1331-1338.

NA Jing-xin, PU Lei-xin, FAN Yi-sa, SHEN Chuan-liang. Effect of temperature and humidity on the failure strength of Sikaflex-265 aluminum adhesive joints[J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1331-1338.

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