Study on UV laser machining quality of carbon fibre reinforced composites

Li, Z.L.; Zheng, Hong; Lim, Gwon; Chu, PL; Li, L.

doi:10.1016/j.compositesa.2010.05.017

Cited by 150 publications

(59 citation statements)

References 20 publications

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“…Even being developed with the near-net forming characteristic, the CFRP composite products always need further necessary machining, wherein the classic machining is greatly challenged for the relatively low efficiency and the probability of damaging the work pieces [2]. As an inborn flexible alternative, laser machining of CFRP materials has drawn much attention, in which laser cutting and drilling are the most typical applications [3]. In such processing, laser energy is designed to be absorbed by the target materials and dissipated into thermal energy quickly.…”

Section: Introductionmentioning

confidence: 99%

Ablation behaviors of carbon reinforced polymer composites by laser of different operation modes

Huang

2015

Optics & Laser Technology

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a b s t r a c tLaser ablation mechanism of Carbon Fiber Reinforced Polymer (CFRP) composite is of critical meaning for the laser machining process. The ablation behaviors are investigated on the CFRP laminates subject to continuous wave, long duration pulsed wave and short duration pulsed wave lasers. Distinctive ablation phenomena have been observed and the effects of laser operation modes are discussed. The typical temperature patterns resulted from laser irradiation are computed by finite element analysis and thereby the different ablation mechanisms are interpreted.

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Section: Introductionmentioning

confidence: 99%

Ablation behaviors of carbon reinforced polymer composites by laser of different operation modes

Huang

2015

Optics & Laser Technology

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“…The HAZ sizes were in the range of 0.63-1.5 mm for all three lasers. Li et al [20] used a diode-pumped solid-state UV laser to investigate the machining quality of CFRP. They showed that minimum HAZ (around 30-50 lm) can be obtained using a nanosecond pulsed UV laser.…”

Section: Introductionmentioning

confidence: 99%

TEA CO2 laser machining of CFRP composite

Salama

Mativenga

et al. 2016

Appl. Phys. A

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Carbon fibre-reinforced polymer (CFRP) composites have found wide applications in the aerospace, marine, sports and automotive industries owing to their lightweight and acceptable mechanical properties compared to the commonly used metallic materials. Machining of CFRP composites using lasers can be challenging due to inhomogeneity in the material properties and structures, which can lead to thermal damages during laser processing. In the previous studies, Nd:YAG, diode-pumped solidstate, CO 2 (continuous wave), disc and fibre lasers were used in cutting CFRP composites and the control of damages such as the size of heat-affected zones (HAZs) remains a challenge. In this paper, a short-pulsed (8 ls) transversely excited atmospheric pressure CO 2 laser was used, for the first time, to machine CFRP composites. The laser has high peak powers (up to 250 kW) and excellent absorption by both the carbon fibre and the epoxy binder. Design of experiment and statistical modelling, based on response surface methodology, was used to understand the interactions between the process parameters such as laser fluence, repetition rate and cutting speed and their effects on the cut quality characteristics including size of HAZ, machining depth and material removal rate (MRR). Based on this study, process parameter optimization was carried out to minimize the HAZ and maximize the MRR. A discussion is given on the potential applications and comparisons to other lasers in machining CFRP.

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“…Such defects include carbon fibre pull-out, delamination, excessive tool wear, abrasive penetration, acoustic noise and abrasive slurry disposal [5][6][7]. Laser machining as a non-contact process offers several advantages, such as free from tool wear, no contact force-induced problems and no abrasive or liquid media [8,9]. However, the large differences in physical and thermal properties of the CFRP constituents make laser machining challenging.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of different process parameters including laser wavelengths, beam transverse mode, pulse duration, repetition rate, laser power density, fluence (energy density), beam spot size, scanning speed and machining strategy were investigated [5,[9][10][11][12][13][14][15][16][17][18][19][20][21]. Li et al [9] investigated the machining quality of CFRP using a diode-pumped solidstate UV laser. They showed that minimum HAZ (50 lm) was achieved using a nanosecond pulsed UV diodepumped solid-state (DPSS) laser cutting at a very high scanning speed (800 mm/s).…”

Section: Introductionmentioning

confidence: 99%

High-power picosecond laser drilling/machining of carbon fibre-reinforced polymer (CFRP) composites

Salama

Mativenga

et al. 2016

Appl. Phys. A

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The large differences in physical and thermal properties of the carbon fibre-reinforced polymer (CFRP) composite constituents make laser machining of this material challenging. An extended heat-affected zone (HAZ) often occurs. The availability of ultrashort laser pulse sources such as picosecond lasers makes it possible to improve the laser machining quality of these materials. This paper reports an investigation on the drilling and machining of CFRP composites using a state-of-the-art 400 W picosecond laser system. Small HAZs (\25 lm) were obtained on the entry side of 6-mm-diameter hole drilled on sample of 6 mm thickness, whereas no HAZ was seen below the top surface on the cut surfaces. Multiple ring material removal strategy was used. Furthermore, the effect of laser processing parameters such as laser power, scanning speed and repetition rate on HAZ sizes and ablation depth was investigated.

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Study on UV laser machining quality of carbon fibre reinforced composites

Cited by 150 publications

References 20 publications

Ablation behaviors of carbon reinforced polymer composites by laser of different operation modes

Ablation behaviors of carbon reinforced polymer composites by laser of different operation modes

TEA CO2 laser machining of CFRP composite

High-power picosecond laser drilling/machining of carbon fibre-reinforced polymer (CFRP) composites

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