摘要
将SMA片状驱动器粘贴于复合材料结构表面制成的可变形结构有诸多优势,但也存在如何确保胶接质量和设计许用可回复应变等问题。本文首先采用合适的红外激光参数对SMA片进行了表面处理,然后通过引入预应变制得SMA片状驱动器,进而将之粘贴于复合材料板梁的上表面制得了可变形复合梁,并对不同预应变情况下的变形性能进行了试验研究。经与仅做丙酮擦拭表面处理复合梁的驱动变形性能对比,结果表明:合适的激光表面处理可以使复合梁在胶层不失效的前提下获得更大的变形能力。但随着预应变的增大,在驱动过程中复合梁的胶层仍会发生大面积的内聚破坏。
Adhering SMA sheet actuators to the surface of composite structures to make deformable structures has many advantages,but there are also problems in ensuring the quality of the bonding and designing the allowable reversible strain.In this paper,we firstly treat the surface of SMA sheets with suitable infrared laser parameters,then SMA sheet actuators are obtained by introducing pre-strain,followed by adhering them to the upper surface of the composite plate beams to produce deformable composite beams.The deformation performance of composite beams with different pre-strain is investigated experimentally.It is shown that a suitable laser surface treatment can make the composite beam obtain a greater deformation capability without the failure of the adhesive layer.However,with the increment of pre-strain,the adhesive layer of the composite beam will still undergo large area cohesive damage during the actuation process.
作者
林再伟
袁国青
LIN Zai-wei;YUAN Guo-qing(School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第3期81-86,95,共7页
Composites Science and Engineering
基金
中央高校基本科研业务费专项资金重点培育项目(22120180222)。
关键词
SMA片驱动器
胶接
激光表面处理
可变形复合梁
复合材料
SMA sheet actuator
adhesive bonding
laser surface treatment
deformable composite beam
composites
