TY - JOUR ID - 131321 TI - Experimental Study on the Bending Behavior of 3D Woven Glass Fiber Sandwich Composite Panels JO - Journal of Textiles and Polymers JA - JTP LA - en SN - 2322-5203 AU - Midrehghan, Abolfazl AU - Nosraty, Hooshang AU - Shokrieh, Mahmood M AU - Akhbari, Mehdi AD - AUT AD - Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology AD - Textile Engineering Department, Kashan Branch, Islamic Azad University, Kashan, Iran Y1 - 2021 PY - 2021 VL - 9 IS - 2 SP - 3 EP - 14 DO - N2 - Three-dimensional integrated woven sandwich composites (IWSCs) consist of two woven fabric facesand an integrated hollow core. The two parallel faces are bonded using pile yarns which keep a defineddistance between the top and bottom. In order to characterize the mechanical properties, three-pointbending test was performed on the IWSC sandwich composites. The results showed that by increasingthe thickness of the composite and therefore increasing the moment of inertia, the flexural strength ofthe specimens increases. The average amount of bending force increase by increasing the thickness fordifferent samples is equal to 80% to 120%. Also, by increasing the pile density, the flexural strengthin hybrid and non-hybrid specimens increases. Therefore, the maximum flexural load is obtained fromthe composites with the highest thickness and pile density. On the other hand, due to the differentarrangement of piles in the warp and weft directions, IWSC panels show different behavior in these twodirections. The values of flexural strength in the direction of the warp are higher than the direction of theweft due to the higher density of pile yarns and therefore the higher shear strength of the structure in thisdirection. In different composites, this difference is 75% to 90%. The fracture properties of the compositeunder bending load show that due to the high strength and modulus of the face-sheets compared to thecore section, the piles are more deformed and damaged and the face-sheets are not noticeably damaged.Also, the damage to the top face sheets of samples tested in the weft direction is greater than that of warp direction. UR - http://www.itast.ir/article_131321.html L1 - http://www.itast.ir/article_131321_cd616ceea9dd3a571ce60959cf559c9f.pdf ER -