Formation mechanism of burr defect in aramid fiber composites based on fly-cutting test

Bao, Yan; Wei, Hao; Wang, Yiqi; Gao, Hang; Liu, Xueshu

doi:10.1007/s00170-019-04041-1

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…To date, some investigations have been carried out in the optimization of AFRP drilling parameters and minimizing drilling-induced damages [3][4][5][6][7]. For instance, Liu et al [5] investigated the effects of interaction between the collar (a ring-shaped device to compress the laminate) and the tool on the thrust force, tearing length, delamination factor, and fuzzing area in drilling of Kevlar fiber reinforced plastics.…”

Section: Introductionmentioning

confidence: 99%

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Mechanistic force modelling in drilling of AFRP composite considering the chisel edge extrusion

Liu

Yang

Liu

et al. 2020

Int J Adv Manuf Technol

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Aramid fiber reinforced plastic (AFRP) composites have been widely used in automotive, aerospace, and defense industries. The common AFRP drilling process tends to cause damage to the composite structures which subsequently affects their fatigue lives and in-service performance. Understanding the mechanism of cutting forces generation is crucial in controlling the cutting process for achieving desired hole quality and machining accuracy. This study proposes a novel mechanistic model considering both the cutting action and the extrusion action of the chisel edge. For the first time, the extrusion force generated by the chisel edge has been considered as a rigid wedge penetrating into an elastic half space based on the Hertz contact theory. The total thrust force in AFRP drilling is divided into three components: i) thrust force generated by the cutting lips, ii) thrust force generated by the chisel edge cutting action, and iii) extrusion force generated by the chisel edge extrusion action. The proposed model was then validated by experiments and data was compared with the case where extrusion was not considered. The results show that our novel mechanistic model can provide a more accurate thrust force prediction. The average error of our model was 2.54% against the experimental data, whereas the error seen in conventional model without accounting extrusion was 8.22%. This suggests that the chisel edge extrusion plays a significant part in the drilling of AFRP, and hence confirms the necessity of considering extrusion in establishing the associated mechanistic model.

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Section: Introductionmentioning

confidence: 99%

“…The empirical modelling was derived to predict the damage extension under varying drilling parameters. Bao et al [7] analyzed the formation mechanism of burr (fuzzing) defect using a single-point fly-cutting method. They pointed out that the burr defect can be reduced by increasing sharpness of the cutting tools and cutting speed.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic force modelling in drilling of AFRP composite considering the chisel edge extrusion

Liu

Yang

Liu

et al. 2020

Int J Adv Manuf Technol

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“…Human or logistical errors as well as material fatigue can lead to missing material in the transoperative phase. Long drills are among the materials with the highest risk of fracture due to the higher de ection and tensile forces [4]. Fatigue fracture of a drill is associated with repeated use of the same drill.…”

Section: Discussionmentioning

confidence: 99%

A viable method to replace the metal trocar drill guide in the inaccessibility of the long sagittal drill for mandibular fixation in BSSO

Samieirad

Torkzadeh

Grillo

2023

Journal of Stomatology, Oral and Maxillofacial Surgery

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“…4 Moreover, drilling holes on AFRP is more likely to bring out defects than edge cutting. 5 Such defects could have seriously negative impact on the service performance of AFRP components, thus restricting their applications.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of ultrafast laser processing aramid fiber reinforced plastics

Cheng

Zhang

et al. 2022

Journal of Reinforced Plastics and Composites

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Processing of aramid fiber reinforced plastics (AFRP) with traditional cutting or milling methods usually result in low machining accuracy and poor edge quality. In this paper, ultrafast laser ablation of AFRP was systematically implemented to test its applicability for the material processing. The responses of AFRP to ultrafast laser pulse lengths, laser fluence, and repetition rates were carefully studied. It is found that single pulse volume removal rate, material removal efficiency, and the ablated surface roughness are in positive correlation with laser pulse lengths, laser fluence, and repetition rates. Sample surface morphology study revealed that heat accumulation and carbonization are easier to occur for high laser repetition rates due to the low decomposition temperature and thermal conductivity of AFRP components. The findings may give useful guide for ultrafast laser processing of similar composite materials.

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Formation mechanism of burr defect in aramid fiber composites based on fly-cutting test

Cited by 10 publications

References 18 publications

Mechanistic force modelling in drilling of AFRP composite considering the chisel edge extrusion

Mechanistic force modelling in drilling of AFRP composite considering the chisel edge extrusion

A viable method to replace the metal trocar drill guide in the inaccessibility of the long sagittal drill for mandibular fixation in BSSO

Characteristics of ultrafast laser processing aramid fiber reinforced plastics

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