Browsing by Author "Saaran, Vinodhen"
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Item Open Access An evaluation of large diameter through-thickness metallic pins in composites: dataset(Cranfield University, 2024-02-20 11:34) Neale, Geoffrey; Saaran, Vinodhen; Dahale, Monali; Skordos, AlexMechanical_Testing_Dataset: Tensile, compression and double canteliever beam experimental data mode_I_2mm_pin_job1.dat: Double canteliever beam simulation Marc input file. DCB_Simulation_output.xlsx: Double canteliever beam simulation results for load verses crack opening displacement.Item Open Access Characterisation of large diameter through-thickness metallic pins in composites(Cranfield University, 2022-09-29 14:53) Neale, Geoffrey; Saaran, Vinodhen; Dahale, Monali; Skordos, AlexPoster and extended abstract presented at the International Conference on Manufacturing of Advanced Composites (ICMAC 2022)Item Open Access An evaluation of large diameter through-thickness metallic pins in composites(Elsevier, 2024-03-24) Neale, Geoffrey; Saaran, Vinodhen; Dahale, Monali; Skordos, Alexandros A.There is increasing demand for functional through-thickness reinforcement (TTR) in composites using elements whose geometry exceeds limitations of existing TTR methods like tufting, stitching, and z-pinning. Recently, static insertion of large diameter TTR pins into heated prepreg stacks has proven a feasible and robust reinforcement process capable of providing accurate TTR element placement with low insertion forces and lower tow damage compared with existing methods for similar element sizes (>1mm diameter) like post-cure drilling. Local mechanical performance and failure mechanics of these pinned laminates are reported here. Laminates with a single statically inserted pins (1.2, 1.5, and 2.0 mm) can mostly retain their in-plane integrity alongside a local improvement in mode I delamination toughness in carbon fibre-benzoxazine laminates. Tensile strength is mostly unaffected by the pins resulting from delamination suppression, whereas there is up to a doubling of Young’s modulus. Compressive strength is significantly diminished (up to 42 %) in pinned laminates. Interlaminar toughness is improved, and peak toughness is pushed ahead of the crack as pin diameter increases. The lack of significant deterioration in in-plane tensile properties in pinned laminates produced using static insertion can expand the range and forms of materials that can be inserted compared to existing TTR.Item Open Access Material characterisation of large diameter through thickness reinforcing pins in composites(Cranfield University, 2022-09-29 14:57) Saaran, Vinodhen; Neale, Geoffrey; Skordos, AlexMSc individual research project poster (2021-2022) on large metallic through-thickness reinforcing pins in compsosites presented by Vinodhen Saraan. Presents an experimental characterisation of the pinned material behaviour.