胶接修复对碳纤维复合材料层合板挠度的影响  

Effect of Adhesive Repair on the Deflection of Carbon Fiber Composite Laminates

作　　者：张晨颖 杨涛 杜宇[2] 侯思宇[2] ZHANG Chenying;YANG Tao;DU Yu;HOU Siyu(Advanced Mechatronics Equipment Technology Tianjin Area Major Laboratory,Tianjin 300387;School of Mechanical Engineering,Tiangong University,Tianjin 300387)

机构地区：[1]天津市现代机电装备技术重点实验室,天津300387 [2]天津工业大学机械工程学院,天津300387

出　　处：《宇航材料工艺》2022年第3期81-87,共7页Aerospace Materials & Technology

基　　金：天津市自然科学基金(20JCQNJC00050)。

摘　　要：为了研究胶接修复对碳纤维复合材料层合板弯曲挠度的影响,试验设置了阶梯搭接和斜面搭接两种搭接方式,通过三点弯曲实验和数字图像相关技术(DIC)来研究胶接接头的弯曲变形情况。结果表明,在相同搭接长度下,阶梯搭接试件的失效载荷和弯曲强度均低于斜面搭接试件;试件的弯曲挠度与强度和搭接长度有关,搭接长度越长,弯曲强度越高,而弯曲挠度越小。由此表明,搭接长度越长,胶接层合板的强度越高,但不利于层合板的柔性变形。In order to investigate the effect of glue joint repair on the flexural deflection of carbon fibre composite laminates,tests were set up with two types of laps,step lap and diagonal lap,to investigate the flexural deflection of the glue joint by means of three-point bending experiments and digital image correlation(DIC)techniques.The results showed that the failure load and bending strength of the step-lap specimens were lower than those of the diagonal-lap specimens for the same lap length.The bending deflection of the specimens was related to the strength and lap length,with the longer the lap length,the higher the bending strength and the lower the bending deflection.This shows that the longer the lap length,the higher the strength of the glued laminate,but not conducive to the flexible deformation of the laminate.

关 键 词：弯曲 挠度 阶梯搭接 斜面搭接 数字图像技术 

分 类 号：V258[一般工业技术—材料科学与工程]