复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (3): 81-86.DOI: 10.19936/j.cnki.2096-8000.20220328.012

• 应用研究 • 上一篇    下一篇

表面粘贴SMA片驱动器复合梁的变形性能试验研究

林再伟, 袁国青*   

  1. 同济大学 航空航天与力学学院,上海200092
  • 收稿日期:2021-06-02 出版日期:2022-03-28 发布日期:2022-04-24
  • 通讯作者: 袁国青(1967-),男,博士,副教授,博导,主要从事复合材料结构方面的研究,90020@tongji.edu.cn。
  • 作者简介:林再伟(1996-),男,硕士研究生,主要从事复合材料方面的研究。
  • 基金资助:
    中央高校基本科研业务费专项资金重点培育项目(22120180222)

Experimental study of the deformation performance of composite beams with SMA sheet actuators adhered on the surface

LIN Zai-wei, YUAN Guo-qing*   

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • Received:2021-06-02 Online:2022-03-28 Published:2022-04-24

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。

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

Abstract: 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.

Key words: SMA sheet actuator, adhesive bonding, laser surface treatment, deformable composite beam, composites

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