An experimental study on drilling of unidirectional GLARE fibre metal laminates

Giasin, Khaled; Ayvar-Soberanis, Sabino; Hodzic, A.

doi:10.1016/j.compstruct.2015.08.007

Cited by 85 publications

(83 citation statements)

References 30 publications

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“…The type of drill was chosen according to similar previous studies on drilling GLARE [4-6, 19, 20]. It is also one of the most common sizes used for making holes in aerospace parts and holes drilled in Airbus A380 structures [20].…”

Section: Materials Specificationmentioning

confidence: 99%

3D Finite Element Modelling of Cutting Forces in Drilling Fibre Metal Laminates and Experimental Hole Quality Analysis

Giasin

Ayvar-Soberanis

French³

et al. 2016

Appl Compos Mater

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Machining Glass fibre aluminium reinforced epoxy (GLARE) is cumbersome due to distinctively different mechanical and thermal properties of its constituents, which makes it challenging to achieve damage-free holes with the acceptable surface quality. The proposed work focuses on the study of the machinability of thin (~2.5 mm) GLARE laminate. Drilling trials were conducted to analyse the effect of feed rate and spindle speed on the cutting forces and hole quality. The resulting hole quality metrics (surface roughness, hole size, circularity error, burr formation and delamination) were assessed using surface profilometry and optical scanning techniques. A three dimensional (3D) finite-element (FE) model of drilling GLARE laminate was also developed using ABAQUS/Explicit to help understand the mechanism of drilling GLARE. The homogenised ply-level response of GLARE laminate was considered in the FE model to predict cutting forces in the drilling process.

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Section: Materials Specificationmentioning

confidence: 99%

3D Finite Element Modelling of Cutting Forces in Drilling Fibre Metal Laminates and Experimental Hole Quality Analysis

Giasin

Ayvar-Soberanis

French³

et al. 2016

Appl Compos Mater

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“…In this study, the average maximum forces in the X and Y directions acting on the hole walls developed during the drilling process were measured from the time of the initial contact of the drill with the workpiece until the completion of the drilling cycle similar to previous studies [9,12,59]. The cutting forces were measured using a piezoelectric 3component dynamometer.…”

Section: Cutting Forces Measurement (F X F Y and F Z )mentioning

confidence: 98%

“…The cutting forces were measured using a piezoelectric 3component dynamometer. KISTLER 9255B and 9255C dynamometers were used to measure the planar orthogonal components (F x and F y ) of a force during the machining process [9,12,59]. The dynamometers are identical in dimensions but differ in their measuring range.…”

Section: Cutting Forces Measurement (F X F Y and F Z )mentioning

confidence: 99%

“…The use of coolants during drilling of GLARE® was found to reduce burr formations, enhance borehole surface finish, and lower the workpiece temperature [8,9]. The laminate thickness and fiber orientation of composite layers were found to influence a number of hole quality parameters and cutting forces [8,9,12,14]. Previous studies on drilling FMLs also evaluated the hole surface roughness and circularity error for different grades and thicknesses [7,9,10].…”

Section: Introductionmentioning

confidence: 99%

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The effect of drilling parameters, cooling technology, and fiber orientation on hole perpendicularity error in fiber metal laminates

Giasin

2018

Int J Adv Manuf Technol

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Conventional twist drilling is a widely used machining process for creating holes in aerospace and automobile structures. Drilling at room temperature can sometime affect the quality of machined holes due to increased thermal effects on the workpiece. Thermal effects can be a cumbersome when machining composites and fiber metal laminates due to their different thermal expansion coefficients, which may introduce additional stress in the structure. Thermal machining effects can be minimized using coolants supplied either directly or indirectly to the cutting tool-workpiece interaction zone, to remove away part of the generated heat. The use of coolants adds extra costs for handling, disposal, and environmental impact. Therefore, environmentally friendly cooling technologies are replacing conventional cooling methods to reduce costs and impact on the environment. In addition, the selection of machining parameters has great influence on the hole quality. This paper investigates the impact of drilling parameters and two modern cooling technologies namely cryogenic liquid nitrogen and minimum quantity lubrication on the hole perpendicularity error of fiber metal laminates commercially known as GLARE® (Glass Laminate Aluminum Reinforced Epoxy). It was also found that applying cryogenic liquid nitrogen or minimum quantity lubrication does not lead to an improvement in hole perpendicularity error in GLARE® laminates.

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“…Chatterjee, S. et al [35] Investigation of the simulation and optimization of machining parameters in drilling of titanium alloys. Giasin, K. et al [36] Experimental study on drilling of unidirectional GLARE fiber metal laminates. Etienne Robert Perrona et al [37] Exploration of the possibility of drilling of high quality features in green powder metallurgy components.…”

Section: Subject Of Discussionmentioning

confidence: 99%