Influence of laser scanning conditions on CFRP processing with a pulsed fiber laser

Takahashi, Kenjiro; Tsukamoto, Masahiro; Masuno, Shinichiro; Sato, Yuji; Yoshida, H.; Tsubakimoto, Koji; Fujita, Hisanori; Miyanaga, Noriaki; Fujita, Masayuki; Ogata, Hideaki

doi:10.1016/j.jmatprotec.2015.02.043

Cited by 47 publications

(12 citation statements)

References 19 publications

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“…The study concluded the proper adjustment of scanning speed and hatching distance necessary for obtaining the desired cut quality and speed. 29 Rao et al reported the effect of gas flow rate, cutting speed, and laser power and optimized the kerf width, HAZ, and taper percentage. 30 Solati et al performed laser drilling on plastic-reinforced glass fiber composite and studied the consequence on HAZ, surface roughness, tensile strength, and taper angle.…”

Section: Introductionmentioning

confidence: 99%

Parametric optimization of laser drilling of microwave-processed kenaf/HDPE composite

Tewari

Singh

Zafar

et al. 2020

Polymers and Polymer Composites

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The present work focused on the investigation of hole quality characteristics in laser-drilled kenaf/high-density polyethylene (HDPE) composites. Microwave-assisted compression molding was used to fabricate kenaf/HDPE composite with 20 wt% of the kenaf fiber reinforcement. The two input parameters pertaining to the experimentation were laser power and cutting speed. Kerf taper angle, heat-affected zone (HAZ), and surface roughness were investigated to evaluate the surface quality and accuracy of the holes generated through laser drilling on composite specimens. The assessment of HAZ was performed qualitatively through image analysis on scanning electron micrographs. Additionally, the effect of composite thickness on laser drilling was also investigated for 3-, 6.7-, and 10-mm composite specimens. The central composite design was used to plan the experiments. The kenaf/HDPE composite drilled at power 120 W and speed 2 mm/s shows a minimum kerf taper angle and surface roughness of 0.056° and 3.83 ± 0.19 µm, respectively. Regression model was obtained for the establishment of relation between input variable parameters and responses. Experimental results and predicted model results exhibited good agreement with each other as they provide error less than 5.35%. The analysis of variance was carried out to obtain the significance of the model chosen for optimization of the output values, that is, surface roughness and kerf taper.

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Section: Introductionmentioning

confidence: 99%

Parametric optimization of laser drilling of microwave-processed kenaf/HDPE composite

Tewari

Singh

Zafar

et al. 2020

Polymers and Polymer Composites

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“…They concluded that the dimensions of HAZ depend on laser types and processing parameters. Ilio et al 29 and Takashi et al 30 also noticed that laser parameters such as power and scan speed have an influence on the quality of the laser cut during machining of the CFRP laminates.…”

Section: Introductionmentioning

confidence: 99%

Effect of nanofiller on fibre laser drilling quality of carbon fibre reinforced polymer composite laminates

Kumar

Singh

2018

Proceedings of the Institution of Mechanical Engineers, Part E:

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Laser machining of carbon fibre reinforced polymer composites is a challenging task due to a significant difference between physical and thermal properties of the constituent materials, i.e. polymer matrix and carbon fibres. This results in extended heat-affected zone (HAZ), taper kerf and poor surface finishing. This paper focuses on an investigation, attempting to minimise the divergence in the decomposition temperature of carbon fibres and epoxy resin by adding multi-walled carbon nanotubes in polymer matrix as a secondary reinforcement. High thermal conductivity of multi-walled carbon nanotubes increases the thermal diffusivity of polymer matrix, which in turn reduces the matrix recession. In addition, laser power and scan speed was also considered as an input parameter and their influence on output responses such as HAZ, taper angle and surface roughness has been studied. To analyse the effect of multi-walled carbon nanotubes on the resultant thermal damage, an innovative technique, i.e. scanning acoustic microscopy was used. This technique provides a ply-by-ply damage analysis. C-scans of the top and bottom surface of the machined holes in the composite were also carried out. Further, micrographs of the holes were taken to analyse the quality of the holes using field-emission scanning electron microscope. The obtained results indicated that HAZ, taper angle and surface roughness of holes decreased by ∼30%, ∼47% and ∼43%, respectively, with 1.5 wt% multi-walled carbon nanotubes doped carbon fibre reinforced polymer laminates, when compared with the results obtained from experiments with neat carbon fibre reinforced polymer composite laminates.

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“…Novel pulsed beam sources with an average laser beam power of more than 1 kW can reduce the disadvantages, given by the short pulse duration . Furthermore, an increasing ablation rate is reported, when widening the ablation width due to optimized cut strategies . As it is written, the inhomogeneous thermo‐optical properties are an aggravating factor for laser cutting.…”

Section: Introductionmentioning

confidence: 99%

Dual Wavelength Laser Beam Cutting of High‐Performance Composite Materials

et al. 2016

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The development of appropriate processes aims to shorten the cycle time of the production of parts, based on fiber reinforced polymers. Here, the laser can be a tool for the future, because the wear‐ and tool free processing expands the area of treatment processes. But laser processing is a challenging process due to the strong differing thermo‐optical properties of fiber‐ and matrix material. The present paper shows a solution to take these limitations into account. An experimental setup is applied to combine radiation with 1 and 10 μm. Thereby, the parameter and application window is expanded by the mixing ratio of radiation with both wavelengths. The present paper will show optimized parameters for different kind of materials as a result of this novel type of processing.

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Influence of laser scanning conditions on CFRP processing with a pulsed fiber laser

Cited by 47 publications

References 19 publications

Parametric optimization of laser drilling of microwave-processed kenaf/HDPE composite

Parametric optimization of laser drilling of microwave-processed kenaf/HDPE composite

Effect of nanofiller on fibre laser drilling quality of carbon fibre reinforced polymer composite laminates

Dual Wavelength Laser Beam Cutting of High‐Performance Composite Materials

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