Experimental investigation and analysis of factors influencing delamination and thrust force during drilling of carbon-fibre reinforced polymer composites

Rajkumar, D.R.; Ranjithkumar, P; Jenarthanan, M.P.; C, Sathiya Narayanan

doi:10.1108/prt-10-2016-0097

Cited by 18 publications

(3 citation statements)

References 32 publications

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“…Ghabezi et al [ 7 ] carried out an experimental study to characterize the delamination and uncut fiber in the drilling of honeycomb structures. Yasar et al [ 8 ] and Rajkumar et al [ 9 ] also evaluated the influence of cutting parameters on hole quality for carbon/epoxy composites. A common outcome of these studies was the recognition of the superior contribution of feed rate to delamination extension.…”

Section: Introductionmentioning

confidence: 99%

Damage Propagation by Cyclic Loading in Drilled Carbon/Epoxy Plates

et al. 2023

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Fiber reinforced composites are widely used in the production of parts for load bearing structures. It is generally recognized that composites can be affected both by monotonic and cyclic loading. For assembly purposes, drilling is needed, but holes can act as stress concentration notches, leading to damage propagation and failure. In this work, a batch of carbon/epoxy plates is drilled by different drill geometries, while thrust force is monitored and the hole’s surrounding region is inspected. Based on radiographic images, the area and other features of the damaged region are computed for damage assessment. Finally, the specimens are subjected to Bearing Fatigue tests. Cyclic loading causes ovality of the holes and the loss of nearly 10% of the bearing net strength. These results can help to establish an association between the damaged region and the material’s fatigue resistance, as larger damage extension and deformation by cyclic stress contribute to the loss of load carrying capacity of parts.

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Section: Introductionmentioning

confidence: 99%

Damage Propagation by Cyclic Loading in Drilled Carbon/Epoxy Plates

et al. 2023

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“…Signalto-noise ratio and ANOVA were used to interpret the results. Rajkumar et al (2017) tried a trial investigation and analysed factors influencing delamination factor and thrust force for drilling of carbon-FRP composites. Kansal et al (2005) tried to correlate the drilling-induced damage with the drilling parameters of unidirectional GFRP composite laminates.…”

Section: Introductionmentioning

confidence: 99%

Optimization of process parameters on drilling of natural fibres reinforced in epoxy resin matrices using Taguchi–Grey relational analysis

Alagappan

Vijayaraghavan

Jenarthanan

et al. 2020

MMMS

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PurposeThe purpose of this paper is to identify the ideal process parameters to be set for the drilling of hybrid fibre-reinforced polymer (FRP) (kenaf and banana) composite using High-Speed Steel drill bits (5, 10, 15 mm) coated with tungsten carbide by means of statistical reproduction of the delamination factor and machining force using Taguchi–Grey Relational Analysis.Design/methodology/approachThe contemplated process parameters are Feed, Speed and Drill Diameter. The trials were carried out by taking advantage of the L-27 factorial design by Taguchi. Three factors, the three level Taguchi Orthogonal Array design in Grey Relational Analysis was used to carry out the trial study. Video Measuring System was used to identify the damage around the drill region. “Minitab 18” was used to examine the data collected by taking advantage of the various statistical and graphical tools available. Examination of variance is used to legitimize the model in identifying the most notable parameter.FindingsThe optimised set of input parameters were found out successfully which are as follows: Feed Rate: 450 mm/min, Cutting Speed: 3,000 rpm and Drill Diameter of 5 mm. When these values are fed in as input the optimised output is being obtained. From ANOVA analysis, it is apparent that the Speed (contribution of 92.6%) is the most influencing parameter on the delamination factor and machining force of the FRP material.Originality/valueOptimization of process parameters on drilling of natural fibres reinforced in epoxy resin matrices using Taguchi–Grey Relational Analysis has not been previously explored.

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“…The result was that the developed model can be effectively used to predict the thrust force in drilling of GFRP composites within the factors and their limits of the study. Rajkumar et al [9] used RSM to predict the input factors influencing the delamination and thrust force on drilled surfaces of carbon-fiber reinforced polymer composite at different cutting conditions with the chosen range of 95% confidence intervals. Ankalagi et al [10] used response surface methodology to analyze the machinability and hole quality characteristics in the drilling of SA182 steel with an HSS drill.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Thrust Force and Cutting Torque in Drilling Based on the Response Surface Methodology

et al. 2018

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In this research, experimental studies were based on drilling with solid carbide tools and the material used was Al7075. The study primarily focused on investigating the effects of machining parameters (cutting speed, feed rate, diameter of the tool) on the thrust force (F z ) and the cutting torque (M z ) when drilling an Al7075 workpiece. The experimental data were analyzed using the response surface methodology (RSM) with an aim to identify the significant factors on the development of both the F z and M z . The application of the mathematical models provided favorable results with an accuracy of 3.4% and 4.7%, for the F z and the M z , respectively. Analysis of variance (ANOVA) was applied in order to examine the effectiveness of the model, and both mathematical models were established and validated. The equations derived proved to be very precise when a set of validation tests were executed. The importance of the factors' influence over the responses was also presented. Both the diameter of the cutting and the feed rate were found to be the factors of high significance, while cutting speed did not affect considerably the F z and M z in the experiments performed.

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Experimental investigation and analysis of factors influencing delamination and thrust force during drilling of carbon-fibre reinforced polymer composites

Cited by 18 publications

References 32 publications

Damage Propagation by Cyclic Loading in Drilled Carbon/Epoxy Plates

Damage Propagation by Cyclic Loading in Drilled Carbon/Epoxy Plates

Optimization of process parameters on drilling of natural fibres reinforced in epoxy resin matrices using Taguchi–Grey relational analysis

Prediction of Thrust Force and Cutting Torque in Drilling Based on the Response Surface Methodology

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