Abstract
Kevlar fiber-reinforced plastic (KFRP) composites are difficult to machine and more likely to produce severe drilling-induced damage. Due to high toughness, ductile fracture of Kevlar fiber occurs after a certain extent of plastic deformation. Therefore, the mechanism of drilling-induced damages of KFRP composite cannot be accurately explained by previous damage mechanisms of carbon fiber-reinforced plastic. In this study, the mechanism of the typical drilling-induced defects of KFRP, such as delamination, tearing, and fuzzing, was systematically investigated. On this basis, a new approach (combined drilling) based on the interaction between collar (a ring-shaped device fitted on laminate) and cutter was presented to prevent damages. To investigate the effects of combined drilling on reducing drilling-induced defects, the influences of collar inner diameter and feed speed on the thrust force, delamination factor, tearing length, and fuzzing area were studied through systematic drilling experiments. Experimental results showed that delamination, tearing, and fuzzing defects were reduced with the decrease in collar inner diameter and feed speed. A reduction in defects was observed for combined drilling with collars of 6.1 mm when compared to drilling without collars at a feed rate of 20 mm/min: 26.3% for the delamination factor, 52.7% for the tearing length ratio, and 73.1% for the fuzzing area. Furthermore, a delamination model for combined drilling was proposed to predict the critical thrust force for the onset of delamination at the exit layer. Compared with experimental results, the safe limit of feed speed without causing delamination is 20 mm/min in combined drilling.
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Abhishek K, Datta S, Mahapatra SS (2015) Optimization of thrust, torque, entry, and exist delamination factor during drilling of CFRP composites. Int J Adv Manuf Technol 76(1–4):401–416. https://doi.org/10.1007/s00170-014-6199-3
Soutis C (2005) Fibre reinforced composites in aircraft construction. Prog Aerosp Sci 41(2):143–151. https://doi.org/10.1016/j.paerosci.2005.02.004
Bhattacharyya D, Horrigan DPW (1998) A study of hole drilling in Kevlar composites. Compos Sci Technol 58(2):267–283. https://doi.org/10.1016/S0266-3538(97)00127-9
Shuaib AN, Al-Sulaiman FA, Hamid F (2004) Machinability of Kevlar® 49 composite laminates while using standard TiN coated HSS drills. Mach Sci Technol 8(3):449–467. https://doi.org/10.1081/MST-200041116
Persson E, Eriksson I, Zackrisson L (1997) Effects of hole machining defects on strength and fatigue life of composite laminates. Compos Part A Appl Sci Manuf 28(2):141–151. https://doi.org/10.1016/S1359-835X(96)00106-6
König W, Graß P (1989) Quality definition and assessment in drilling of fibre reinforced thermosets. CIRP Ann-Manuf Technol 38(1):119–124. https://doi.org/10.1016/S0007-8506(07)62665-1
Wang GD, Li N, Xiong XH, Chong Q, Zhou L, Lu SW (2017) 3D level comprehensive evaluation of hole quality in drilling carbon fiber-reinforced plastics. Int J Adv Manuf Technol 93(5-8):2433–2445. https://doi.org/10.1007/s00170-017-0614-5
Ho-Cheng H, Dharan CKH (1990) Delamination during drilling in composite laminates. J Eng Ind 112(3):236–239. https://doi.org/10.1115/1.2899580
Liu D, Tang Y, Cong WL (2012) A review of mechanical drilling for composite laminates. Compos Struct 94(4):1265–1279. https://doi.org/10.1016/j.compstruct.2011.11.024
Capello E (2004) Workpiece damping and its effect on delamination damage in drilling thin composite laminates. J Mater Process Technol 148(2):186–195. https://doi.org/10.1016/S0924-0136(03)00812-4
Zhang HJ, Chen WY, Chen DC, Zhang LC (2001) Assessment of the exit defects in carbon fibre-reinforced plastic plates caused by drilling. Key Eng Mater 196(8):43–52. https://doi.org/10.4028/www.scientific.net/KEM.196.43
Davim JP, Reis P (2003) Drilling carbon fiber reinforced plastics manufactured by autoclave—experimental and statistical study. Mater Des 24(5):315–324. https://doi.org/10.1016/S0261-3069(03)00062-1
Kim SC, Kim JS, Yoon HJ (2011) Experimental and numerical investigations of mode I delamination behaviors of woven fabric composites with carbon, Kevlar and their hybrid fibers. Int J Precis Eng Man 12(2):321–329
Wan YZ, Chen GC, Huang Y, Li QY, Zhou FG, Xin JY, Wang YL (2005) Characterization of three-dimensional braided carbon/Kevlar hybrid composites for orthopedic usage. Mater Sci Eng A 398(1–2):227–232. https://doi.org/10.1016/j.msea.2005.03.010
Bunsell AR (1975) The tensile and fatigue behaviour of Kevlar-49 (PRD-49) fibre. J Mater Sci 10(8):1300–1308. https://doi.org/10.1007/BF00540819
Won MS, Dharan CKH (2002) Drilling of aramid and carbon fiber polymer composites. J Manuf Sci Eng 124(4):778–783. https://doi.org/10.1115/1.1505854
Gaitonde VN, Karnik SR, Rubio JC, Correia AE, Abrão AM, Davim JP (2008) Analysis of parametric influence on delamination in high-speed drilling of carbon fiber reinforced plastic composites. J Mater Process Technol 203(1-3):431–438. https://doi.org/10.1016/j.jmatprotec.2007.10.050
Davim JP, Reis P (2003) Study of delamination in drilling carbon fiber reinforced plastics (CFRP) using design experiments. Compos Struct 59(4):481–487. https://doi.org/10.1016/S0263-8223(02)00257-X
Abrão AM, Faria PE, Rubio JC, Reis P, Davim JP (2007) Drilling of fiber reinforced plastics: a review. J Mater Process Technol 186(1–3):1–7. https://doi.org/10.1016/j.jmatprotec.2006.11.146
Singh I, Bhatnagar N (2006) Drilling of uni-directional glass fiber reinforced plastic (UD-GFRP) composite laminates. Int J Adv Manuf Technol 27(9-10):870–876. https://doi.org/10.1007/s00170-004-2280-7
Tsao CC, Hocheng H (2005) Effects of exit back-up on delamination in drilling composite materials using a saw drill and a core drill. Int J Mach Tool Manu 45(11):1261–1270. https://doi.org/10.1016/j.ijmachtools.2005.01.015
Wern CW, Ramulu M, Shukla A (1996) Investigation of stresses in the orthogonal cutting of fiber-reinforced plastics. Exp Mech 36(1):33–41. https://doi.org/10.1007/BF02328695
Khashaba UA, El-Sonbaty IA, Selmy AI, Megahed AA (2010) Machinability analysis in drilling woven GFR/epoxy composites: part I—effect of machining parameters. Compos Part A Appl Sci Manuf 41(3):391–400. https://doi.org/10.1016/j.compositesa.2009.11.006
Nagao T, Hatamura Y (1988) Investigation into drilling laminated printed circuit board using a torque-thrust-temperature sensor. CIRP Ann-Manuf Technol 37(1):79–82. https://doi.org/10.1016/S0007-8506(07)61590-X
Khashaba UA, El-Keran AA (2017) Drilling analysis of thin woven glass-fiber reinforced epoxy composites. J Mater Process Technol 249:415–425. https://doi.org/10.1016/j.jmatprotec.2017.06.011
Dipaolo G, Kappor SG, Devor RE (1996) An experimental investigation of the crack growth phenomenon for drilling of fiber-reinforced composite materials. J Eng Ind 118(1):104–110. https://doi.org/10.1115/1.2803629
Chen WC (1997) Some experimental investigations in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates. Int J Mach Tool Manu 37(8):1097–1108. https://doi.org/10.1016/S0890-6955(96)00095-8
Davim JP, Rubio JC, Abrao AM (2007) A novel approach based on digital image analysis to evaluate the delamination factor after drilling composite laminates. Compos Sci Technol 67(9):1939–1945. https://doi.org/10.1016/j.compscitech.2006.10.009
Silva D, Teixeira JP, Machado CM (2014) Methodology analysis for evaluation of drilling-induced damage in composites. Int J Adv Manuf Technol 71(9-12):1919–1928. https://doi.org/10.1007/s00170-014-5616-y
Khashaba UA, El-Sonbaty IA, Selmy AI, Megahed AA (2010) Machinability analysis in drilling woven GFR/epoxy composites: part II—effect of drill wear. Compos Part A Appl Sci Manuf 41(9):1130–1137. https://doi.org/10.1016/j.compositesa.2010.04.011
Chegdani F, Mezghani S, Mansori ME (2015) Experimental study of coated tools effects in dry cutting of natural fiber reinforced plastics. Surf Coat Technol 284:264–272
Liu C, Wang GF, Ren CZ, Yang YW (2014) Mechanistic modeling of oblique cutting considering fracture toughness and thermo-mechanical properties. Int J Adv Manuf Technol 74(9-12):1459–1468. https://doi.org/10.1007/s00170-014-6100-4
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This work is supported by the National Natural Science Foundation of China (Grant No. 11372220).
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Liu, S., Yang, T., Liu, C. et al. Investigation of hole quality during drilling of KFRP based on the interaction between collars and cutter. Int J Adv Manuf Technol 95, 4101–4116 (2018). https://doi.org/10.1007/s00170-017-1520-6
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DOI: https://doi.org/10.1007/s00170-017-1520-6