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.
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
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