Disscussion Of The Design And Mechanical Properties Of Composite Materials For Angle-interlock Fabric Structure

3D textile composite material has been used widely in production and living by many countries as a kind of advanced material.It was due to the material has the advantages of high specific strength, big specific modulus, light quality and the flexible design. Angle-interlock composite material was a kind of 3D composite materials.This structure was maded by two yarn systems. In accordance with the thickness direction they mixed each other,then the stability structure was got.Becase this fabrics were gain easily through ordinary loom,so this structure has more further study by many researchers.In this paper, The formation processing of empty structure and shared fell structure for angle-interlock fabrics were analyzed. For multi-weft angle-interlock fabric, the empty structure were assumed as the second weft to rebuild the solid structure of according multi-weft interlock woven. Furture study, the relationship equation of Rj and Rw of empty structure for angle-interlock fabric was got,what’s more the relationship equation of Rj and Rw of common multi-weft angle-interlock fabric was made out. In the same way, All weft in warp fell were assumed as one to rebuild according basic multi-weft angle-interlock woven.Basised of this, the relationship equation of Rj and Rw for angle-interlock fabric structure shared fell was gain. The structure diagrams of angle-interlock were described and analyzed in this paper, and it was shown that there was a certain regularity between warps. Namely, structure diagrams were achived just based on the numbers of weft over warp for the first warp above the line of weft. According to the regularity, a simple and effective method was put forward to design angle-interlock fabrics of different organizational structures. It is concluded that the mulit-layer of fabric structure diagrams can be use digital to explain when several basic conditions were satisfied which this paper describes below. Above this, the designing method was put forward for empty structure and shared fell structure of angle-interlock.Angle-interlock fabric structure diagram was analyzed, according to changing the regularity of warps for basic angle-interlock fabric or fabric with empty structure,then the corresponding fabric structure diagrams with pipeline were designed. The flexibility design of woven fabrics could provide more choice for actual need.In order to verify the correctness of the mentioned theory,this paper took 4 layer angle-interlock fabric for example.basic structure,one line empty, two line empty, three line empty,shared fell and pipeline structure were designed and weaved by Semi-automatic loom. Finaly,the theories were validated.To further study fabrics were processed into composite materials. Mechanical properties were compared of different structures but same cycle, same structures but different cycle for pipeline structure and five structures composite materials for angle-interlock. The experimental results showed that:For three kinds transverse shock response of different structures but same cycle for pipeline structures, mechanical properties of 3 cycle and 6 layers basic angle-interlock was the best, 3 cycle and 4 layers basic angle-interlock second, 3 cycle and 4 layers empty structure of angle-interlock third.But theirenergy absorption were the opposite; For two kinds transverse shock response of same structures but different cycle for pipeline structures, mechanical properties of 3 cycle and 4 layers basic angle-interlock was better than 2cycle and 4 layers basic angle-interlock, the others were close each other.