10250

9468

كارشناسي ارشد

تكنولوژي نساجي

اصفهان: دانشگاه صنعتي اصفهان،دانشكده نساجي

1393

[دوازده]، 70ص : مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

سعيد آجلي

26/3/94

حسين حسني، محمدشيخ زاده

1396/10/02

كتابنامه

نساجي

مهندسي نساجي

ID9468

69 Design and Manufacturing of Three Dimensional Braiding Machine Ali Vasheghani Farahani Ali vasheghani@chmail ir Date of Submission 2015 01 12 Department of Textile Engineering Isfahan University of Technology Isfahan 8415683111 Iran Degree M Sc Language FarsiSupervisor Dr Saeed Ajeli Sajeli@cc iut ac ir Abstract Braids are important category of technical textile because of their special properties Braid is a kind of textile structure that consists of many yarns that are weaved together likea relatively thin fabric or cord like structure so that braid yarns path are not parallel withthe braid axis and no two adjacent yarn could be found that twisted together completely Ingeneral braids are divided to two categories two dimensional and three dimensional There are various methods for weaving the three dimensional braids One of these methodsis the 4 step method that its name is taken from the type of motion of its braidingmachine Nowadays 3 D braids are used in civil industry aerospace medical equipmentmanufacturing automotive industry and also used as thermal and moisture insulator In this research first the feasibility of weaving 3 D braid by the 4 step methodinvestigated For this purpose a wooden replica of the 3 D braiding machine was built anda 3 D braid was weaved by extracting necessary motions of yarn carriers Then by havingthe technical knowledge of weaving the 3 D braid structure by this method an automaticbraiding machine was designed and manufactured After manufacturing the machine possibility of weaving a cubic braid with various materials was investigated and samples ofnylon polyester acrylic and glass fiber with different yarn count was woven Toinvestigate the possibility of weaving different patterns with the machine movement ofyarn carriers simulated using MATLAB and various patterns obtained using differentcombination of carrier movements Using the machine some patterns with 16 32 and 48yarns was woven We concluded that weaving of different patterns is possible After this project not only to the possibility of designing and manufacturing of three dimensional braiding machine was obtained but also existence of different paths to movethe yarn carriers was realized that causes the possibility of weaving various patterns Alsothe machine can weave 3 D braid with different materials such as carbon and glass fibers Moreover angles of the braid yarns are changeable Keywords three dimensional braid 4 step braid braid pattern technical textiles

سعيد آجلي

حسين حسني، محمدشيخ زاده