Medium Density Fiberboard (MDF) has been one of the most rapidly growing composite panel products to enter world market in recent years. Optimization of drilling parameters for Medium Density ...Fiberboard (MDF) panel with multiple performance characteristics using Grey Relational Analysis (GRA) method was done. Drilling parameters, such as feed rate, spindle speed, drill diameters were considered for the study. By analyzing grey grade matrix, the degree of influence for each controllable process factor on to individual targets can be found. An optimal parameter combination of drilling operation was obtained via GRA. The feed rate was identified to be the most influencing factor on surface roughness and delamination. Additionally, ANOVA (Analysis of Variance) is used to find the interaction between parameters and the possible error in the experiments
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Carbon Fiber Reinforced Plastic (CFRP) is a very strong and light composite material. During drilling of these composite panels, the layers of fibers peel out and get detached from its adjacent ...layers posing severe threat to the strength of the material and quality of the drilled hole which is referred as delamination. In this paper, the concept of delamination factor Fd, is used to analyze and compare easily the delamination degree in the drilling of carbon fiber reinforced plastic (CFRP) composite laminates. Delamination is measured by infrared thermo graphic technique and analysed. Experiments were conducted by varying the drilling parameters and the output response delamination is modelled mathematically. The adequacy of the mathematical model is analyzed statistically using ANOVA which gives a high degree of correlation between the input parameters and output response. It is evident that point angle during drilling is the most influencing factor to delamination.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
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