ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 11 3 2023 01 01 Experimental study on the effect of braiding angle on the fracture behavior of 2D braided composite cylinders 11 17 210517 10.48302/jtp.2024.426763.1278 EN Maryam Zeynivand Mojarrad PhD student, Amirkabir University of Technology 0009-0000-7872-5798 Hadi Dabiryan Textile Engineering, Amirkabir University of Technology 0000-0001-5161-2849 Ali Akbar Gharehaghaji Amirkabir University of Technology 0000-0002-3819-5048 Amir M. Rezadoost Iran Polymer and Petrochemical Institute 0000-0003-0198-0795 Journal Article 2023 11 24 This research aims to study the fracture mechanism of two‐dimensional (2D) braided glass/epoxy composite cylinders under axial tensile load. For this purpose, three types of composite cylinders were fabricated using braids with three braiding angles, i.e., 30°, 45° and 60° to find out the role of braid angle on the fracture mechanisms of composites. Novel fixtures (jaws) were designed and produced for tensile testing of composite cylinders. Composite cylinders were subjected to the tensile test by applying SANTAM static tensile machine. Macroscopic damage morphologies of samples were provided after the tensile test by using an optical microscope. The results demonstrated that the different fracture modes occur in braided cylindrical composites. Fiber fracture, matrix fracture, and de-bonding were the dominant fracture modes observed in braided composite cylinders proportional to the angle of braids. Fiber fracture was the main mode of fracture in composite cylinders reinforced with braids with angle of 30, while the dominant fracture mode in the composite cylinder reinforced with braids having 60 was matrix fracture. In samples with 45° braiding angle, a combination of fracture modes was observed. In summary, the results indicated that the braiding angle has a significant influence on the fracture behavior of composite cylinders. 2D braid composite cylinders fracture modes braiding angle tensile strength http://www.itast.ir/article_210517_67e88b0237f41cfefbfd09428a25068c.pdf