Study on Critical Feed Rate of Delamination Based on Thrust Force of Chisel Edge during CFRP Drilling

doi:10.3901/JME.2021.03.255

Abstract

Abstract: For minimizing or avoiding the exit delamination defect during drilling carbon fiber reinforced polymers (CFRP), the thrust force control has practical value due to the existence of critical force. This research divided the thrust force on chisel edge into two parts, one is the axial component of the acting force between the rake face of chisel edge and CFRP, another is the axial component of contact force between the arc circle arc of chisel edge and CFRP. For the former, the calculation formula is deduced based on the meso-mechanics theory and Hoffman strength criterion; and the mechanical model of the latter are analyzed by using Hertz contact theory, the contact between chisel edge and the carbon fiber are regarded as the orthogonal cylindrical contact. The sum of the two part consist the thrust force on chisel edge during drilling. The proportion of thrust force on chisel edge in the whole cutting edge is determined by experimental data, the relationship between the thrust force, critical thrust force of delamination defect and drilling cutting parameter are established. The reliability of the analytical model is verified by drilling experiment and finite element modeling (FEM) analysis. The research plays a guiding role on reasonable selection of drilling parameter and prevention of delamination defect during drilling CFRP.

Key words: CFRP, Hoffman strength criterion, thrust force of drilling, critical thrust force, critical feed rate

CLC Number:

TB332

WANG Dong, JIAO Feng. Study on Critical Feed Rate of Delamination Based on Thrust Force of Chisel Edge during CFRP Drilling[J]. Journal of Mechanical Engineering, 2021, 57(3): 255-266.

References

[1] ABENA A,SOO S L,ESSA K. Modelling the orthogonal cutting of UD-CFRP composites:Development of a novel cohesive zone model[J]. Composite Structures,2017,168:65-83.
[2] SORRENTINO L,TURCGETTA S,BELLINI C. A new method to reduce delaminations during drilling of FRP laminates by feed rate control[J]. Composite Structures,2018,186:154-164.
[3] BRINKSMEIER E,FANGMANN S,RENTSCH R. Drilling of composites and resulting surface integrity[J]. CIRP Annals-Manufacturing Technology,2011,60(1):57-60.
[4] TSAO Chungchen,HE Hocheng,CHEN Yangche. Delamination reduction in drilling composite materials by active backup force[J]. CIRP Annals-Manufacturing Technology,2012,61(1):91-94.
[5] CHEN Wenchou. Some experimental investigations in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates[J]. International Journal of Machine Tools and Manufacture,1997,37(8):1097-1108.
[6] MIHAI-BOGDAN L,PAUL X. Experimental analysis of drilling fiber reinforced composites[J]. International Journal of Machine Tools & Manufacture,2011,51:937-946.
[7] HE Hocheng,DHARAN C K H. Delamination during drilling in composite laminates[J]. Trans. ASME,1990,112:236-239.
[8] JAIN S,YANG D C H. Delamination-Free Drilling of Composite Laminates[J]. Journal of Engineering for Industry,1992,116:4(4):475-481.
[9] TSAO Chungchen,CHEN Wenchou. Prediction of the location of delamination in the drilling of composite laminates[J]. Journal of Materials Processing Technology,1997,70:185-189.
[10] PIQUET R,Ferret B,LACHAUD F,et al. Experimental analysis of drilling damage in thin carbon/epoxy plate using special drills[J]. Composites:Part A,2000,31:1107-1115.
[11] PIERRE R,LANDON Y,LACHAUD F,et al. Analytical models of composite material drilling[J]. The International Journal of Advanced Manufacturing Technology,2011,52(5-8):609-617.
[12] GIROT F,DAU F,GUTIERREZ M. New analytical model for delamination of CFRP during drilling[J]. Journal of Materials Processing Technology,2017,240:332-343.
[13] NASIR A A A,AZMI A I,LIH T C,et al. Experimental study towards determination of critical feed for minimization of delamination damage in drilling flax natural fibre composites[J]. Procedia CIRP,2018,77:191-194.
[14] JIA Zhenyuan,ZHANG Chong,WANG Fuji,et al. An investigation of the effects of step drill geometry on drilling induced delamination and burr of Ti/CFRP stacks[J]. Composite Structures,2020,235,11786.
[15] WON M S,DHARAN C K H,Chisel edge and pilot hole effects in drilling composite laminates[J],Transactions of the ASME,Journal of Manufacturing Science and Engineering,2002,124(2):242-247.
[16] TSAO Chungchen,HE Hocheng. The effect of chisel length and associated pilot hole on delamination when drilling composite materials[J]. International Journal of Machine Tools & Manufacture,2003,43:1087-1092.
[17] XU Jinyang,AN Qinglong,CHEN Min. A comparative evaluation of polycrystalline diamond drills in drilling high-strength T800S/250F CFRP[J]. Composite Structures,2014,117:71-82.
[18] LI Maojun,SOO S L,ASPINWALL D K,et al. Study on tool wear and workpiece surface integrity following drilling of CFRP laminates with variable feed rate strategy[J]. Procedia CIRP,2018,71:407-412.
[19] LANGELLA A,NELE L,MAIO A. A torque and thrust prediction model for drilling of composite materials[J]. Composites Part A,2005,36(1):83-93.
[20] 孟庆勋,姜寿山,刘书暖,等. CFRP层合板制孔周期内轴向力分布规律研究[J]. 机械工程学报,2018,54(11):110-120. MENG Qingxun,JIANG Shoushan,LIU Shunuan,et al. Study of Thrust Force Distribution in a Drilling Cycle during Drilling of CFRP Laminates[J]. Journal of Mechanical Engineering,2018,54(11):110-120.
[21] ZHANG Yuxi,WU Dan,CHEN Ken. A theoretical model for predicting the CFRP drilling-countersinking thrust force of stacks[M]. Composite Structures,2019,209:337-348.
[22] HEIDARY H,MEHRPOUYA M A. Effect of backup plate in drilling of composite laminates,analytical and experimental approaches[J]. Thin-Walled Structures,2019,136:323-332.
[23] 张少实,庄茁. 复合材料与粘弹性力学[M]. 北京:机械工业出版社,2011. ZHANG Shaoshi,ZHUANG Zhuo. Composite materials and viscoelastic mechanics[M]. Beijing:China Machine Press,2011.
[24] 白明华,刘洪彬. 工程弹性力学基础[M]. 北京:机械工业出版社,1996 BAI Minghua,LIU Binbin. Foundation of engineering elastic mechanics[M]. Beijing:China Machine Press,1996.
[25] JOHNSON K L. 接触力学[M]. 徐秉业,罗学富,刘信声等译. 北京:高等教育出版社,1992.JOHNSON K L. Contact mechanics[M]. Translated by XU Bingye,LUO Xuefu,LIU Xinsheng,et al. Beijing:Higher Education Press,1992.