Micro Model of Carbon Fiber/Cyanate Ester Composites and Analysis of Machining Damage Mechanism

Liu, Haitao; Jiao, Lin; Sun, Yazhou; Zhang, Jinyang

doi:10.1186/s10033-019-0364-4

Cited by 11 publications

(2 citation statements)

References 31 publications

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“…The milling force of 45°/135° fiber direction laminate is smaller than that of 0°/90° fiber direction laminate. The location of the maximum tangential force is matched with the area generated by delamination [39]. Machining surface damage mainly includes hole defects caused by local single carbon fiber fracture, surface cracks caused by elastic bending deformation of carbon fiber, and voids or incomplete adhesion between carbon fiber and matrix.…”

Section: Materials Removal Mechanismmentioning

confidence: 99%

Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies

et al. 2022

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Fiber-reinforced composites have become the preferred material in the fields of aviation and aerospace because of their high-strength performance in unit weight. The composite components are manufactured by near net-shape and only require finishing operations to achieve final dimensional and assembly tolerances. Milling and grinding arise as the preferred choices because of their precision processing. Nevertheless, given their laminated, anisotropic, and heterogeneous nature, these materials are considered difficult-to-machine. As undesirable results and challenging breakthroughs, the surface damage and integrity of these materials is a research hotspot with important engineering significance. This review summarizes an up-to-date progress of the damage formation mechanisms and suppression strategies in milling and grinding for the fiber-reinforced composites reported in the literature. First, the formation mechanisms of milling damage, including delamination, burr, and tear, are analyzed. Second, the grinding mechanisms, covering material removal mechanism, thermal mechanical behavior, surface integrity, and damage, are discussed. Third, suppression strategies are reviewed systematically from the aspects of advanced cutting tools and technologies, including ultrasonic vibration-assisted machining, cryogenic cooling, minimum quantity lubrication (MQL), and tool optimization design. Ultrasonic vibration shows the greatest advantage of restraining machining force, which can be reduced by approximately 60% compared with conventional machining. Cryogenic cooling is the most effective method to reduce temperature with a maximum reduction of approximately 60%. MQL shows its advantages in terms of reducing friction coefficient, force, temperature, and tool wear. Finally, research gaps and future exploration directions are prospected, giving researchers opportunity to deepen specific aspects and explore new area for achieving high precision surface machining of fiber-reinforced composites.

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Section: Materials Removal Mechanismmentioning

confidence: 99%

Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies

et al. 2022

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“…Li et al [12] discussed the damage behaviors of UD-CFRP in single-and multiple-pass strategies orthogonal cutting by combining the FE models and the experiments. Liu et al [13] proposed a novel three-phase nite element model of CFRP to simulate the machining damages. Cheng et al [14] revealed the deformation mechanism of UD-CFRP by building the micro-scale thermal-mechanical coupling numerical simulation model.…”

Section: Introductionmentioning

confidence: 99%

Effect mechanism of plain-woven structure of carbon fiber on CFRP cutting

Dong

et al. 2022

Int J Adv Manuf Technol

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Carbon ber-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 in uence 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 ll 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 ll bers 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 ll bundles, especially in the ll 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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