Comprehensive prediction model of drilling temperature of UD-CFRP laminates considering the combined action of main cutting edge and chisel edge

Li, Shujian; Teng, Hanwei; Dai, Longyu; Zhou, Yongchao; Li, Changping; Li, Pengnan; Ko, Tae Jo

doi:10.1016/j.compstruct.2023.116899

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…The machinability of CFRP is notorious [8], [9] due to its inhomogeneity, anisotropic nature and different composed phase properties of carbon fiber phase and matrix phase, which results in some easily detected defects including fiber pull-out, matrix cracking, burrs and delamination [2], [10], [11]. Beside of this, extrinsic factors, including tool geometry [12], [13], [14], [15], [16], [17], tool material, support plates [18], [19], [20], machining parameters [12], [21], [22] and workpiece shapes [23], [24], can also influence the machined surface during drilling CFRPs.…”

Section: Machinability Of Carbon Fiber Reinforced Polymer (Cfrp)mentioning

confidence: 99%

Experimental research on the matrix cracks and delamination distribution and their monitoring methods during drilling UD-CFRP

Liu,

Qin,

et al. 2023

Preprint

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Although carbon fiber reinforced polymer (CFRP) has been widely used in various applications, it is still regarded as a kind of difficult to cut material due to its vulnerability to machining damages. In the current research, CFRP drilling experiments was conducted and found that the matrix cracks and delamination were observed not only at the entrance and exit of holes, but also in the middle area of the holes. Therefore, it is necessary to study the distribution of these defects due to the severe effect on the mechanical properties of CFRP. In this paper, the distribution of these defects as well as their monitoring methods were investigated. First, four factors were introduced to locate the distribution of these defects that were observed by X-ray CT scanner. Then, Statistical Process Control (SPC) was applied for damage detection with features optimized sensitivity analysis. Finally, the performance of SPC was validated, which has a high damage identifying accuracy of 86.78% and recommended for the on-line application.

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Section: Machinability Of Carbon Fiber Reinforced Polymer (Cfrp)mentioning

confidence: 99%

Experimental research on the matrix cracks and delamination distribution and their monitoring methods during drilling UD-CFRP

Liu,

Qin,

et al. 2023

Preprint

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“…[11][12][13][14][15][16] However, excessively high drilling speeds can result in rapid tool wear and burn marks on the hole wall. 17 Other researchers have focused on tooling and machining methods. For example, Fernandes et al 18 reported that gun drills combined the advantages of low axial force, sharp cutting edges, and fast chip evacuation, which allowed them to quickly cut through fibers and reduce tearing and burrs at the entry and exit of the holes.…”

Section: Introductionmentioning

confidence: 99%

A study on the ultrasonic vibration on the cutting performance during ultrasonic-assisted drilling of CFRP with twist and dagger drill bits

Mao,

Jia,

Zhang

2024

Advances in Mechanical Engineering

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During the drilling process of carbon fiber reinforced polymer (CFRP), defects such as exit delamination, tearing, and burrs are prone to occur, among which excessive axial force during drilling is the main reason for the generation of exit delamination defects. In this study, ultrasonic-assisted and conventional drilling with twist and dagger drills were investigated on 5 mm-thick multi-directional laminated fiber sheets made of T300-12k/AG80 carbon fiber composite with different orientations. The axial force evolutions in each case were monitored when drilling holes in CFRP plates, and the axial force of drilling and the appearance characteristics of hole outlet were compared. The experimental results showed that the ultrasonic assisted drilling reduced the axial drilling forces of twist and dagger drill by up to 20.6% and 30.7%, respectively, compared to conventional drills. In addition, as the feed rate increases, the axial force of drilling gradually increases, and the exit delamination factor shows an overall increasing trend. The ultrasonic vibrations reduced the exit delamination damage of both drills. A special structure of the dagger drill effectively avoided exit delamination during ultrasonic-assisted drilling, which makes the incision more neat to improve the processing quality.

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“…LV et al [8] conducted ultrasonic grinding experiments on CFRP plates and found that UVAD can effectively reduce the cutting force and temperature during drilling, improving the quality of the drilled hole. LI et al [9] analyzed the influence of CFRP ultrasonic vibration assisted machining parameters on machining temperature, and the results showed that the drilling temperature decreases with the increase of feed rate and increases with the increase of spindle speed. Feng et al [10] studied the machining stability of CFRP drilling, and found that UVAD can improve the rigidity at the exit of the drilled hole, suppress the generation of burrs and tear damage at the hole exit, and improve the drilling quality.…”

Section: Introductionmentioning

confidence: 99%

Research on Drilling Method for Carbon Fiber Reinforced Plastic Based on Ultrasonic Vibration-Assisted Drilling

Peng,

Chengyang

2024

Preprint

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Aiming at the defects such as delamination and tearing that are prone to occur in the drilling process of Carbon Fiber Reinforced Plastic (CFRP), the finite element simulation and experimentation researches on drilling were carried out by using the Ultrasonic Vibration-Assisted Drilling (UVAD). In this paper, the kinematics characteristics of drill cutting edge during UVAD were analyzed to reveal the basic principle of UVAD. Then the most representative 0° and 90° angle lay-up CFRP of UVAD finite element simulation drilling model was established based on Hashin failure criterion and kinematics characteristics of UVAD. Finally, combined with drilling experiments, the accuracy of the finite element model was checked and the influence of process parameters on the cutting force was explored, and the removal mechanism of UVAD was revealed. The simulation results show that, compared with the Conventional Drilling (CD), the cutting force was reduced and removal modes was changed with the high-frequency impact cutting capability by UVAD. The experimental results also further demonstrate that UVAD effectively reduced the axial force and the delamination ratio. Specifically, the axial force during drilling was reduced by 5.1%~18.2%, the delamination factor at the hole outlet was decreased by 3.1%~8.2%, the drilling defects at the outlet were effectively suppressed, and the quality of the holes was significantly improved.

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Comprehensive prediction model of drilling temperature of UD-CFRP laminates considering the combined action of main cutting edge and chisel edge

Cited by 13 publications

References 41 publications

Experimental research on the matrix cracks and delamination distribution and their monitoring methods during drilling UD-CFRP

Experimental research on the matrix cracks and delamination distribution and their monitoring methods during drilling UD-CFRP

A study on the ultrasonic vibration on the cutting performance during ultrasonic-assisted drilling of CFRP with twist and dagger drill bits

Research on Drilling Method for Carbon Fiber Reinforced Plastic Based on Ultrasonic Vibration-Assisted Drilling

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