Study on Fatigue Properties of Adhesive-rivet Hybrid Repaired Metal Skin with Broken Hole

Abstract

Broken hold of the skin is one of the most typical forms of aircraft battle damage.At present,the repair methods mainly include rivet repair and adhesive repair,which are insufficient in repair effect or repair time.A method of adhesive-rivet hybrid repair is proposed to the skin broken hole.The fatigue test and finite element analysis are used to compare the fatigue properties of four kinds of specimens with prefabricated circular broken hole structure,which are without repair,riveting repair,adhesive repair and adhesive-rivet hybrid repair.The results show that,compared with the other two repair methods,the adhesive-rivet hybrid repair method has the best repair effect.The rivet function in the hybrid connection can effectively improve the bearing capacity of the adhesive layer and inhibit the peeling of the adhesive layer.The adhesive-rivet hybrid repair method has better fatigue performance than riveting repair,and the repair time is shorter than that of gluing repair.It has a good application prospect in the battle damage repair of metal skin perforated structures.

Keywords

• metal skin
• broken hole structure
• adhesive-rivet hybrid repair
• battle damage repair
• fatigue test
• finite element analysis