TY - JOUR T1 - Investigation of Design Parameters in Tensile Loads of the Diamond Joints in Composite Structures with a Finite Element Approach AU - Uslu Uysal, Mine PY - 2023 DA - September DO - 10.55549/epstem.1351007 JF - The Eurasia Proceedings of Science Technology Engineering and Mathematics JO - EPSTEM PB - ISRES Publishing WT - DergiPark SN - 2602-3199 SP - 339 EP - 347 VL - 22 LA - en AB - Adhesively bonded joining in composite structures is carried out using mechanical or adhesive techniques with commonly single or double lap. In laminated structure elements joined in this way, damage generally occurs at the upper layer. That is loading capacity goes down due to the fact that the axial width goes up. In this paper, mechanical joints with joint lock in the shape of diamond are offered to replace adhesively bonded butt joints. E-glass/vinyl ester composite laminates was used as the plate material in the system, the diamond material in the middle was composite, aluminum and steel and Loctite Hysol 9464 was used as the adhesive material. Finite element models were performed in different values of the ratio of the end height of diamond to the height of the specimen (c/height), the ratio of the upper height of diamond to the end height of diamond (a/c) and the ratio of the half-length of diamond to the height of specimen (b/height). Using these dimension values, the effects of the joint geometry parameters are evaluated. Diamond joints model was analyzed by using finite elements method and obtained stresses values. These stresses values were examined and the appropriate design parameters for the diamond lock were decided. Before damage occurs in a composite structure, damage to the diamond lock is seen, and with this important observation, the life of composite structures can be extended by repairing the diamond lock. KW - Diamond joint KW - Composite KW - Tensile load KW - Joint types KW - Finite element analysis CR - Adams, R. D., & Coppendale, J. (1979). The stress–strain behaviour of axially loaded butt joints. The Journal of Adhesion, 10, 49-62. CR - Adams, R. D., Coppendale, J., & Peppiatt, N. (1978). Stress analysis of axisymmetric butt joints loaded in torsion and tension. The Journal of Strain Analysis for Engineering Design, 13, 1-10. CR - Ascione, F. (2009). Mechanical behaviour of FRP adhesive joints: a theoretical model. Composites: Part B, 40, 116-124. UR - https://doi.org/10.55549/epstem.1351007 L1 - https://dergipark.org.tr/en/download/article-file/3366885 ER -