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摘要
制备了复合材料泡沫夹层结构板-芯缺陷试样,并对板-芯缺陷试样进行了注射修补。通过对修补区域进行钻孔,并使用医用注射器将DG-8胶黏剂注射入修补区域,利用热补仪将注射修补后的区域进行加热固化,并对注射修补完成后的复合材料夹层结构试样进行无损检测、力学性能测试以及微观结构分析。结果表明:注射修补后的试样拉伸强度恢复率达到97%以上,弯曲强度恢复率达到75%以上,试样修补区域的胶黏剂与修补件间胶接质量良好。
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.
关键词
复合材料
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泡沫夹层结构
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注射修补
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强度恢复率
Key words
composite
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foam sandwich structure
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injecting repair
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streng recovery rate
复合材料泡沫夹层结构板-芯缺陷注射修补工艺研究[J].
化工新型材料, 2020, 48(9): 243-246 DOI:10.19817/j.cnki.issn 1006-3536.2020.09.053
[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.
