Study on injecting repair technology of skin-core flaw of composite foam sandwich structure

Expand
  • 1. AVIC Chengdu Aircraft Industrial (Group) Co. ,Ltd. ,Chengdu 610000;
    2. Nanjing University of Aeronautics and Astronautics,Nanjing 211100

Received date: 2019-06-04

  Revised date: 2020-06-23

  Online published: 2020-10-20

Abstract

The skin-core flaw samples of composite foam sandwich were prepared,and the flaw samples were repaired by means of injecting repair.The repaired area was drilled and DG-8 adhesive was injected into the repaired area using a medical syringe.Mechanical property,nondestructive testing and microstructure analysis of the repaired samples were carried out.The results showed that,the tensile strength recovery rate of repaired samples was more than 97%,bending strength recovery rate was more than 75%.This was a good combination between DG-8 adhesive,prepreg patch and foam core material.

Cite this article

Bao Xiao, He Kai, Zhou Jian, Peng Ke, Li Ping, Cui Yihua . Study on injecting repair technology of skin-core flaw of composite foam sandwich structure[J]. New Chemical Materials, 2020 , 48(9) : 243 -246 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.053

References

[1] 陈祥宝,张宝艳,邢丽英.先进树脂基复合材料术发展及应用现状[J].中国材料进展,2009,28(6):2-12.
[2] 程小全.复合材料层合板与蜂窝夹芯板低速冲击后压缩性能研究[D].北京:北京航空航天大学,1998.
[3] Cheng X.Damage of scarf-repaired composite laminates subjected to low-velocity impacts[J].Steel & Composite Structures,2014,2017(2):199-213.
[4] 王莹.复合材料缺陷修补技术[J].粘接,2015(6):83-86.
[5] 龚志红,包啸.中温固化复合材料层压板分层缺陷注射修补工艺研究[J].玻璃钢/复合材料,2017(6):85-88.
[6] 王云英,孟江燕,丁祖群,等.航空先进聚合物基复合材料的修补[J].航空维修与工程,2008(2):27-30.
[7] 泮世东,吴林志,孙雨果.含面芯界面缺陷的蜂窝夹芯板侧向压缩破坏模式[J].复合材料学报,2007,24(6):121-127.
[8] Caminero M A,Pavlopoulou S.Analysis of adhesively bonded repairs in composites:damage detection and prognosis[J].Composite Structures,2013,95:500-517.
[9] Found M S,Friend M J.Evaluation of CFRP panels with scarf repair patches[J].Composite Structures,1995,32:115-122.
[10] Liu S,Cheng X,Xu Y,et al.Study on impact performances of scarf-repaired carbon fiber reinforced polymer laminates[J].Journal of Reinforced Plastics & Composites,2014,34(1):60-67.
[11] Campilho R D S G,M.de Moura F S F,Domingues J J M S.Stress and failure analyses of scarf repaired CFRP laminates using a cohesive damage model[J].Journal of Adhesion Science and Technology,2007,21(9):855-870.
[12] 陈绍杰.复合材料结构修理指南[M].北京:航空工业出版社,2001,1-8.
Options
Outlines

/