Abstract: The panel flaw samples of composite foam sandwich were prepared,and the flaw samples were repaired by means of adding repair.The cured repair patch and flaw sample were glued by the DG-3 adhesive which were heated to curing by the hot bonder.Mechanical property,nondestructive testing and microstructure analysis of the repaired samples were carried out.The results showed that the tensile fracture strength of samples with defect diameters of 20mm and 30mm was 0.644MPa and 0.641MPa,and the recovery rate of tensile fracture strength was 98.6% and 98.1% respectively.The bending strength reached 2.186MPa and 2.017MPa,and the recovery rate of bending strength was 125.0% and 114.9%.The mechanical properties recovered well after the repair and the DG-3 adhesive of repair area achieved good adhesive condition.
包啸, 龚志红, 何凯, 李建川, 崔益华. 复合材料泡沫夹层结构面板损伤缺陷贴补修补工艺研究[J]. 化工新型材料, 2019, 47(11): 256-259.
Bao Xiao, Gong Zhihong, He kai, Li Jianchuan, Cui Yihua. Study on adding repair technology of panel flaw of composite foam sandwich structure. New Chemical Materials, 2019, 47(11): 256-259.
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