In industrial processes, piercing and trimming are essential because composite structures are usually manufactured in a near-net shape to reduce machining operations. Punching and shear cutting using out-of-plane shear loading are expected to increase productivity. Nevertheless, little is known about the effects of such operations on polymer-matrix composites. This study presents on the characterization of piercing damage in typical carbon fiber reinforced plastic (CFRP) cross-ply laminates [0°2/90°2]s after punching using quasi-static (QS) and drop-weight impact (DWI) loadings. During QS punching, the upper and lower ply interfaces delaminate due to the high shear stress to cut fibers and gradual shear deformation in the middle ply; however, during DWI punching at a low impact velocity, delamination of the lower ply interface can be reduced due to the localization of shear deformation, as compared to that in QS punching. Finally, the damage accumulation process during DWI punching is discussed.
GeierNDavimJPSzalayT.Advanced cutting tools and technologies for drilling carbon fibre reinforced polymer (CFRP) composites: a review. Compos Part A: Appl Sci Manuf2019; 125: 105552.
2.
GengDLiuYShaoZ, et al. Delamination formation, evaluation and suppression during drilling of composite laminates: a review. Compos Struct2019; 216: 168–186.
3.
KawasegiN.Evaluation of internal defects generated in machine milled carbon fiber reinforced plastic using X-ray computed tomography. Precis Eng2019; 60: 257–264.
4.
Sheikh-AhmadJAlmaskariFEl-HofyM.Characterization of the cutting forces and friction behavior in machining UD-CFRP using slot milling test. Int J Adv Manuf Technol2021; 112: 3471–3483.
5.
LiMHuangMYangX, et al. Experimental study on hole quality and its impact on tensile behavior following pure and abrasive waterjet cutting of plain woven CFRP laminates. Int J Adv Manuf Technol2018; 99: 2481–2490.
6.
YoussefHAEl-HofyHAAbdelazizAM, et al. Accuracy and surface quality of abrasive waterjet machined CFRP composites. J Compos Mater 2021; 55: 1693–1703.
7.
El-HofyMHEl-HofyH.Laser beam machining of carbon fiber reinforced composites: a review. Int J Adv Manuf Technol2019; 101: 2965–2975.
8.
LiMChenLYangX.A feasibility study on high-power fiber laser cutting of thick CFRP laminates using single-pass strategy. Opt Laser Technol2021; 138: 106889.
9.
NakamuraNOgiKOtaA, et al. Shear cutting behaviors in thermosetting and thermoplastic CFRP laminates. Key Eng Mater2015; 656–657: 347–352.
10.
YashiroSOgiK.Experimental study on shear-dominant fiber failure in CFRP laminates by out-of-plane shear loading. J Compos Mater2019; 53: 1337–1346.
11.
OgiKYashiroS. Effect of temperature and clearance on shear cutting behaviors in CFRP laminates. In: 20th International conference on composite materials, ICCM 2015, Copenhagen, Denmark, 19 July–24 July 2015, P-ID 4301-3.
12.
YashiroSOnoROgiK.Effect of machining conditions on the trimming damage in composite laminates induced by out-of-plane shearing. J Mater Process Tech2019; 271: 463–475.
13.
YashiroSOnoROgiK, et al. Prediction of shear-cutting process of CFRP cross-ply laminates using smoothed particle hydrodynamics. In: 29th Annual technical conference of the American Society for Composites, ASC 2014; 16th US-Japan conference on composite materials; ASTM-D30 Meeting, La Jolla, San Diego, USA, 8 September–10 September 2014, Lancaster: DEStech Publications. pp.2771–2784. ISBN 978-1-63439-415-4,2014.
14.
UeshibaSOgiKShigematsuY, et al. Characterization of machining damages generated by a piercing process in CFRP laminates. Key Eng Mater2015; 656–657: 185–190.
15.
OgiK. Piercing process by punch press in CFRP laminates. In: 8th Asian-Australasian conference on composite materials (ACCM-8), Kuala Lumpur, Malaysia, 6 November–8 November 2012, paper no. O-PRO-089.
16.
KlockeFShirobokovAKerchnaweS, et al. Experimental investigation of the hole accuracy, delamination, and cutting force in piercing of carbon fiber reinforced plastics. Procedia CIRP2017; 66: 215–220.
17.
ShirobokovAKerchnaweSTrauthD, et al. Characterization of the sheared edge quality of blanked carbon fibre reinforced plastics. Adv Mater Res2016; 1140: 280–287.
18.
HoYCYanagimotoJ.Effect of unidirectional prepreg size on punching of pseudo-ductile CFRP laminates and CFRP/metal hybrid composites. Compos Struct2018; 186: 246–255.
19.
DimitrienkoYIDimitrienkoID.Modeling and simulation of textile composite plates under a punching load. Appl Math Comput2020; 364: 124660.
20.
WojtkowiakDTalaśkaK.Determination of the effective geometrical features of the piercing punch for polymer composite belts. Int J Adv Manuf Technol2019; 104: 315–322.
21.
CrescenziFMariniFNardiC, et al. Mechanical characterization of glass fibre–epoxy composite material for ITER pre-compression rings. Fusion Eng Des2011; 86: 2553–2556.
22.
Lopez-PuenteJZaeraRNavarroC.The effect of low temperatures on the intermediate and high velocity impact response of CFRPs. Compos Part B2002; 33: 559–566.
23.
YashiroSOgiKNakamuraT, et al. Characterization of high-velocity impact damage in CFRP laminates: part I – experiment. Compos Part A: Appl Sci Manuf2013; 48: 93–100.
24.
YashiroSOgiKYoshimuraA, et al. Characterization of high-velocity impact damage in CFRP laminates: part II – prediction by smoothed particle hydrodynamics. Compos Part A: Appl Sci Manuf2014; 56: 308–318.
25.
ZabalaHAretxabaletaLCastilloG, et al. Impact velocity effect on the delamination of woven carbon-epoxy plates subjected to low-velocity equienergetic impact loads. Compos Sci Tech2014; 94: 48–53.
26.
CamineroMAGarcía-MorenoIRodríguezGP.Damage resistance of carbon fibre reinforced epoxy laminates subjected to low velocity impact: effects of laminate thickness and ply-stacking sequence. Polym Test2017; 63: 530–541.
27.
YamashitaMMoriTNikawaM.Hole making process of metal and composite sheets by impact hydraulic pressure. Procedia Eng2017; 207: 1558–1563.
28.
SoutisCFleckNASmithPA.Failure prediction technique for compression loaded carbon fibre-epoxy laminate with open holes. J Compos Mater1991; 25: 1476–1498.
