胶层脱粘对金属胶接修理后剩余强度的影响研究

Effect of Debonding on Residual Strength of Repaired Metal

本文主要研究了胶层脱粘对金属平板复合材料补片胶接修理后拉伸剩余强度的影响。首先根据补片下方剪应力分布解析公式,将胶接修理区域划分为脱粘安全区和脱粘影响区,然后进行了金属平板结构胶接修理的剩余强度试验以研究胶层脱粘的影响,并验证理论分析结果。结果表明:在脱粘安全区内,胶层自身不参与承载,胶层脱粘对金属平板结构的拉伸剩余强度没有影响;而在脱粘影响区内,出现的胶层脱粘会对金属平板结构的拉伸剩余强度产生影响。

The effect of debonding on the tensile residual strength of metal plate bonded with composite patch is studied in the paper.Firstly,the debonding zone of the repaired plate is analyzed and the influence of bonding area on the bonding strength is analyzed.The results show that in the debonding safety zone,the adhesive layer itself does not participate in the bearing,and the debonding of the adhesive layer has no effect on the tensile residual strength of the metal plate structure.However,the debonding of the adhesive layer in the debonding influence zone will affect the tensile residual strength of the metal plate structure.