Print Email Facebook Twitter Machining GLARE fibre metal laminates Title Machining GLARE fibre metal laminates: a comparative study on drilling effect between conventional and ultrasonic-assisted drilling Author Giasin, Khaled (University of Portsmouth) Atif, Muhammad (Beijing Institute of Technology) Ma, Yuan (Tsinghua University; Shenzhen Tsingding Technology Co, Shenzhen) Jiang, Chulin (Teesside University) Koklu, Ugur (Karamanoglu Mehmetbey University) Sinke, J. (TU Delft Aerospace Manufacturing Technologies) Date 2022 Abstract GLARE laminates are multi-layered metal-composite materials created from bonding sheets of metallic alloys with carbon or glass fibre layers. The application of hybrid-conventional machining processes such as ultrasonic-assisted drilling (UAD) is becoming of great interest to the aerospace industry due to its capability in reducing the cutting forces and tool wear which are directly responsible for drilling-induced delamination. There is rich literature on the conventional drilling (CD) of GLARE, but no work reported using UAD process. This study will fill this gap and investigate the UAD of GLARE laminates using an indigenously developed UAD system. The influence of spindle speed and feed rate on thrust force and surface roughness metrics (Ra and Rz) were investigated under CD and UAD regimes. The quality of the borehole and damage mechanisms in the laminate constituents was examined using scanning electron microscopy (SEM). The contribution of the drilling parameters on the measured outputs was further evaluated using the analysis of variance (ANOVA) statistical analysis. It was found that UAD resulted in a significant reduction in thrust force by up to 65% while surface roughness metrics Ra and Rz were unaffected by the type of drilling process used. SEM analysis showed irregular and fuzzier surfaces in glass fibre layers in holes machined using UAD due to the longitudinal vibration of the tool. Subject GLAREScanning electron microscopySurface roughnessThrust forceUltrasonic-assisted drilling To reference this document use: http://resolver.tudelft.nl/uuid:b643465b-988e-47d4-bfb0-6e016b0bd031 DOI https://doi.org/10.1007/s00170-022-10297-x ISSN 0268-3768 Source International Journal of Advanced Manufacturing Technology, 123 (9-10), 3657-3672 Part of collection Institutional Repository Document type journal article Rights © 2022 Khaled Giasin, Muhammad Atif, Yuan Ma, Chulin Jiang, Ugur Koklu, J. Sinke Files PDF s00170_022_10297_x.pdf 3.95 MB Close viewer /islandora/object/uuid:b643465b-988e-47d4-bfb0-6e016b0bd031/datastream/OBJ/view