Damage behaviors of unidirectional CFRP in orthogonal cutting: A comparison between single- and multiple-pass strategies

Li, Hao Nan; Wang, Jun Peng; Wu, Chao; Zhao, Yong Jie; Xu, Jifeng; Liu, Xiaoling; Wei, Zhu

doi:10.1016/j.compositesb.2020.107774

Cited by 92 publications

(20 citation statements)

References 44 publications

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“…Fig. 2 shows the variation curve of the rake angle of the main cutting edge according to formula (1). The change curve is consistent with literature [25].…”

Section: Rake Angle Analysissupporting

confidence: 83%

“…The proportion of carbon fiber reinforced polymer composites (CFRP) used in the new generation of aircraft have reached 50%, because it can reduce the weight of the structural components, resist corrosion and bear high loads. However, CFRP is difficult to machine because of its continuity, inhomogeneity and anisotropy, as well as its strong abrasion during machining processing [1,2]. Therefore, the choice of cutting tools and processing parameters are very important in cutting such materials [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Precise Design of Drill Structure Based on Cutting Force Distribution Alone Cutting Edge in CFRP Drilling

Qiu

et al. 2021

Preprint

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At present, the problems that need to be solved urgently in CFRP drilling are delamination and tool wear, which are closely related to the distribution of cutting force on the cutting edge. The aim of this paper is to present a method to analyze the cutting force distribution on the main cutting edge of the drill. This method applies to the analysis of the drilling performance of double point angle (DPA) drill and to optimize the step drill structure for CFRP drilling. Both of these applications prove the correctness of the analysis method. According to the calculation model of the rake angle of the main cutting edge of the twist drill and the cutting force prediction model, the distribution model of the cutting force on the main cutting edge is established. This method reveals the basic reason why the thrust force increases linearly when a single main cutting edge cuts into the workpiece. In the process of analyzing the drilling performance of the DPA drill, the edge force coefficient is used to represent the thrust force, and the application environment of the drill with a different structure is analyzed. Based on the distribution characteristics of the axial force on the main cutting edge, the step ratio of the step drill is optimized. This method can optimize the step ratio of the step drill. This method can be employed to optimize the step ratio of any structure step drill.

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“…Fig. 2 shows the variation curve of the rake angle of the main cutting edge according to formula (1). The change curve is consistent with literature [25].…”

Section: Rake Angle Analysissupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Precise Design of Drill Structure Based on Cutting Force Distribution Alone Cutting Edge in CFRP Drilling

Qiu

et al. 2021

Preprint

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“…How to reduce the amount of cutting fluid or abandon the cutting fluid and use pollution-free green cooling medium to replace the cutting fluid has become the idea of exploring green processing methods. Based on these ideas, related researchers have made many attempts [56][57][58][59] and proposed various green processing methods. The development of green processing methods is shown in Fig.…”

Section: Research Progress Of Green Processing Methodsmentioning

confidence: 99%

Circulating purification of cutting fluid: an overview

Zhou³

et al. 2021

Int J Adv Manuf Technol

181

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Cutting fluid has cooling and lubricating properties and is an important part of the field of metal machining. Owing to harmful additives, base oils with poor biodegradability, defects in processing methods, and unreasonable emissions of waste cutting fluids, cutting fluids have serious pollution problems, which pose challenges to global carbon emissions laws and regulations. However, the current research on cutting fluid and its circulating purification technique lacks systematic review papers to provide scientific technical guidance for actual production. In this study, the key scientific issues in the research achievements of ecofriendly cutting fluid and waste fluid treatment are clarified. First, the preparation and mechanism of organic additives are summarized, and the influence of the physical and chemical properties of vegetable base oils on lubricating properties is analyzed. Then, the process characteristics of cutting fluid reduction supply methods are systematically evaluated. Second, the treatment of oil mist and miscellaneous oil, the removal mechanism and approach of microorganisms, and the design principles of integrated recycling equipment are outlined. The conclusion is concluded that the synergistic effect of organic additives, biodegradable vegetable base oils and recycling purification effectively reduces the environmental pollution of cutting fluids. Finally, in view of the limitations of the cutting fluid and its circulating purification technique, the prospects of amino acid additive development, self-adapting jet parameter supply system, matching mechanism between processing conditions and cutting fluid are put forward, which provides the basis and support for the engineering application and development of cutting fluid and its circulating purification.

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“…1. 12 , ν 21 are the Young's elastic modulus of the ber, the Young's elastic modulus of the matrix, the ber volume fraction, the matrix volume fraction, the ber shear modulus, the matrix shear modulus, the ber Poisson's ratio, the matrix Poisson's ratio, the equivalent elastic modulus in 1-direction (viz. the ber axial direction), the equivalent elastic modulus in 2-direction (viz.…”

Section: Introductionmentioning

confidence: 99%

Effect Mechanism of Plain Woven Structure of Carbon Fiber on CFRP Cutting

Dong

et al. 2021

Preprint

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Carbon fiber-reinforced plastic (CFRP) is increasingly employed as structural components for aircrafts in aerospace. The plain woven CFRP is more commonly used than the UD-CFRP. The machining-induced damages are easy to occur. The influence of the plain-woven structure on the cutting mechanism and the defects occurrence mechanism are seldom studied in detail. In this paper, the three-dimensional FEM model of plain woven CFRP is established. The occurrence and propagation of the delamination are investigated. The results indicate that the stress concentrations are easy to occur at the junction of warp and fill bundles near the cutting position. The plain-woven structure can block the transfer of stress and the crack propagation. When θ=90°, the damages of the fill fibers and the crack of the interface are easy to occur. When θ=45°, the step-like fracture is formed in both of the warp and the fill bundles, especially in the fill bundles. Under the same cutting conditions, the exit delamination of the plain-woven CFRP is obviously less than that of the UD-CFRP. The delamination greatly increases with the increase of the feed speed. The delamination decreases with the increase of the cutting speed. The delamination is closely related to the instantaneous cutting position of the cutter.

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Damage behaviors of unidirectional CFRP in orthogonal cutting: A comparison between single- and multiple-pass strategies

Cited by 92 publications

References 44 publications

Precise Design of Drill Structure Based on Cutting Force Distribution Alone Cutting Edge in CFRP Drilling

Precise Design of Drill Structure Based on Cutting Force Distribution Alone Cutting Edge in CFRP Drilling

Circulating purification of cutting fluid: an overview

Effect Mechanism of Plain Woven Structure of Carbon Fiber on CFRP Cutting

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