Parametric studies on pulsed Nd:YAG laser cutting of carbon fibre reinforced plastic composites

Mathew, Jose; Goswami, G.; Ramakrishnan, N.; Naik, N.K.

doi:10.1016/s0924-0136(99)00011-4

Cited by 206 publications

(112 citation statements)

References 4 publications

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“…However, the high temperatures reached within the cutting zone could damage the structural properties of the material. In [15][16][17] the authors describe the interaction between the laser radiation at different wavelengths and several polymeric materials, comprising unreinforced plastics as well as short and long fibre reinforced composites. As reinforcements, carbon, aramid and glass fibres have been used.…”

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confidence: 99%

Investigation on interlaminar shear strength properties of disc laser machined consolidated CF-PPS laminates

Jaeschke¹,

Kern²,

Stute³

et al. 2011

Express Polym. Lett.

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Abstract. In consequence of an increased interest in using endless carbon fibre reinforced thermoplastic composites (TPC), automated and highly productive processing technologies for cutting and trimming steps of consolidated materials are sought. In this paper, the influence on the thermal effect caused by laser cutting with respect to static strength properties of TPC based on a polyphenylene sulfide (PPS) matrix is studied. For the cutting experiments, consolidated TPC laminates at varying thicknesses up to s = 3.1 mm and a disc laser emitting at a wavelength of ! = 1030 nm at a maximum output power of P L = 2 kW are used. For the first time, the resulting magnitude of the heat affected zone (HAZ) at the cutting edge of the composite material is correlated with interlaminar shear strength tests. The results are compared to specimens prepared by milling and abrasive water jet cutting. Depending on the laminate thickness, the laser treated TPC samples show comparable properties to those of conventionally processed specimens. A reduced load bearing area, as a consequence of damaged fibre-matrix-adhesion due to laser impact, is identified as main factor for the reduction of interlaminar shear strengths for higher laminate thicknesses.

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confidence: 99%

Investigation on interlaminar shear strength properties of disc laser machined consolidated CF-PPS laminates

Jaeschke¹,

Kern²,

Stute³

et al. 2011

Express Polym. Lett.

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“…The reduction of the kerf width at the bottom could be due to the side wall absorption of the laser beam resulting in less laser energy at the kerf bottom, thereby reducing the kerf width [37]. Moreover, the reduction of the laser energy absorbed by the material as the depth increases due to plasma/plume scattering of the laser beam and the reduction of energy density due to the laser beam divergence after the focal point is another reason for the tapering [2].…”

Section: Discussionmentioning

confidence: 99%

“…CFRPs are gaining widespread uses in many applications where lightweight, high strength and corrosion resistance are essential, such as in the aerospace, automotive and marine industries [1]. Although the structures made by composites are often constructed and cured to the required shape, machining, such as trimming of the edges and drilling of assembly/fastening holes, remains unavoidable [2]. A carbon fibre-reinforced polymer consists of higher-strength abrasive fibres bonded within a weak polymer.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, considerable research work using other laser sources has been performed to investigate the laser processing of CFRP composite. Mathew et al [2] used a Nd:YAG pulsed laser to identify and optimize the important parameters for machining of CFRP using a response surface methodology. These parameters include pulse energy, pulse duration, cutting speed, pulse repetition rate and gas pressure.…”

Section: Introductionmentioning

confidence: 99%

“…The large number of laser processing parameters necessitates the use of statistical modelling technique in order to understand the process parameter interactions. Mathew et al [2] used response surface modelling (RSM) with central composite design (CCD) for experimental design and process parameter optimization of pulsed Nd:YAG laser cutting fibre-reinforced plastic composite sheet of 2 mm in thickness. The input factors were pulse energy, cutting speed, pulse duration, pulse repetition rate and gas pressure, while the output responses were HAZ and wall taper angle.…”

Section: Introductionmentioning

confidence: 99%

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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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Cutting and Machining of Polymer Composites

Sheikh-Ahmad¹,

Davim²

2012

Wiley Encyclopedia of Composites

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This article discusses the phenomena of machining of fiber‐reinforced polymer composites by conventional and nonconventional means. First, the underlying principles of machining by a wedge‐shaped tool are discussed and the application of these principles to the distinctive structure of fiber‐reinforced polymers is delineated. The influence of fiber orientation on the chip formation mode, cutting forces, and surface roughness is explained. Machinability of composites in terms of tool wear and surface roughness is discussed in processes such as turning, milling, drilling, and abrasive machining. Finally, kerf formation in laser and abrasive waterjet machining is discussed. The factors affecting machinability in terms of kerf width, taper, and surface roughness are also discussed.

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Parametric studies on pulsed Nd:YAG laser cutting of carbon fibre reinforced plastic composites

Cited by 206 publications

References 4 publications

Investigation on interlaminar shear strength properties of disc laser machined consolidated CF-PPS laminates

Investigation on interlaminar shear strength properties of disc laser machined consolidated CF-PPS laminates

TEA CO2 laser machining of CFRP composite

Cutting and Machining of Polymer Composites

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