Design, Fabrication And Properties Of A Containment Ring Of The Aircraft Engine Gas Compressor Based On The 3D Orthogonal Woven Fabric

Based on the 3D orthogonal woven structure, a type of containment ring of the aircraft engine gas compressor was designed and fabricated in this study. The containment ring was manufactured on the three-dimensional weaving machine. In the weaving procedure, full side locking and two-side filling insertion were adopted to obtain reserved holes in the containment ring, forming a continuous weaving. Furthermore, the ladder-shape ends of the containment ring were woven to ensure unchangeable thickness after the overlapping. The containment ring based on the 3D woven structure in this study is supposed to provide sufficient capacity of security to accommodate military and civilian aircraft engines’ gas compressors and bring about great economic and social benefit.Firstly, the 3D orthogonal weaving machine was modified for the fabrication of the containment rings based on the 3D orthogonal woven fabric. The cloth edge toss device, as well as the technique of filling insertion from both sides, has been applied.Secondly, the quasi-static tensile property of the 3D orthogonal aramid fabric was studied systematically. In this part, the effects of the rectangular and dog-bone shapes of the specimens on the tensile properties of the fabric were investigated. In the second part, the effects of the two parameters of the weft densities with 5 and 6 ends per centimeter, as well as the layers of the fabric with 4, 5 and 6 on the semi-static properties of the fabric were also investigated. The ultimate strength, ultimate tenacity and stress-strain curves were considered in the analysis of semi-static tensile test results. The results showed that the ultimate strength and strain increased with the increase of fabric plies in the 5 ends per centimeter fabric. While for the 6 ends/cm fabric, the modulus and average stress （ultimate tenacity） decreased with the increase of the fabric.Finally, the ballistic impact test and quasi-static penetration test of the containment ring material （Kevlar（?）29 3D orthogonal woven fabric covered with aluminum alloy plate on the former’s both sides respectively） were done to investigate the ballistic impact resistance of the containment rings. The value of ballistic limit V₅₀ and specific energy absorption index W were measured to evaluate the ballistic resistance property. The damage patterns and ballistic resistance property were analyzed and compared with each other to have a full understanding of penetration mechanism in different targets. Also, some suggestions were proposed to improve the anti-ballistic property of the 3D woven orthogonal fabric.The results showed that different permutation of fabric and aluminum alloy plate have different target performances under ballistic impact. Also, the energy transmission and bullet proof mechanism are different for these two types of targets. The structure of aluminum alloy plate in front of Kevlar fabric has superior anti-ballistic impact property to the other one.