Investigation of Laser Grooving for Composite Materials

Chryssolouris, George; Sheng, P.; Choi, Woo Chun

doi:10.1016/s0007-8506(07)61609-6

Cited by 30 publications

(9 citation statements)

References 6 publications

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“…This is because high thermal conduction of carbon fibres induces the most matrix recession damage in this case, while when the scanning direction is parallel to the fibre orientation, this damage is much less. 5,10,22 The cut samples were then analysed using optical microscopy and scanning electron microscopy (SEM).…”

Section: Methodsmentioning

confidence: 99%

Fibre laser cutting of carbon fibre–reinforced polymeric composites

Negarestani

2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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Owing to the increasing industrial demand for carbon fibre–reinforced polymer composite materials, the interest in effective machining technology grows. The current carbon fibre–reinforced polymer machining technique is dominated by mechanical milling, which often results in high tooling cost and some defects in the machined materials. The exploration of alternative machining techniques is becoming more important. Laser machining as an advanced non-contact technique can potentially improve the machining of carbon fibre–reinforced polymers. However, thermal damages to the machined materials owing to the inhomogeneous, anisotropic and heterogeneous features of these materials have been prohibiting the application of laser machining in industrial scale for carbon fibre–reinforced polymers. In this article, an investigation on the basic characteristics of high-power single-mode ytterbium-doped fibre laser machining of carbon fibre–reinforced polymer is reported. Statistical analysis was performed for the optimisation of the process parameters in single-pass cutting. Furthermore, quality improvement was achieved by the use of multiple-pass cutting technique, which was found to be effective to minimise delamination at low power level and high scanning speeds.

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Section: Methodsmentioning

confidence: 99%

Fibre laser cutting of carbon fibre–reinforced polymeric composites

Negarestani

2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…A possible reason for less penetration depth might be that the travel speed was too high to achieve sufficient melting. work (Chryssolouris, 1988).…”

Section: Multiple Laser Scansmentioning

confidence: 99%

“…Chryssolouris et al (1988) found that a linear relationship between the groove width and power density exists. A theoretical model for the depth prediction was introduced by Choi and Chryssolouris (1995) in which it was predicted that an increase of the combined effect of power and traverse speed results in larger depths.…”

Section: Introductionmentioning

confidence: 99%

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Fiber laser induced surface modification/manipulation of an ultrasonically consolidated metal matrix

Masurtschak

Friel

Gillner

et al. 2013

Journal of Materials Processing Technology

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Ultrasonic Consolidation (UC) is a manufacturing technique based on the ultrasonic joining of a sequence of metal foils. It has been shown to be a suitable method for fiber embedment into metal matrices. However, integration of high volume fractions of fibers requires a method for accurate positioning and secure placement to maintain fiber layouts within the matrices. This paper investigates the use of a fiber laser for microchannel creation in UC samples to allow such fiber layout patterns. A secondary goal, to possibly reduce plastic flow requirements in future embedding processes, is addressed by manipulating the melt generated by the laser to form a shoulder on either side of the channel. The authors studied the influence of laser power, traverse speed and assist gas pressure on the channel formation in aluminium alloy UC samples. It was found that multiple laser passes allowed accurate melt distribution and channel geometry in the micrometre range. An assist gas ai ded the manipulation of the melted material

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“…Chryssolouris et al (11,12,13,14,15) proposed, for increased efficiency, the use of two laser beams directed along two different axes of the work-piece to produce two converging kerfs,. A concept of a laser lathe and laser milling machine was introduced, based on the simultaneous use of two beams.…”

Section: D-ṽmentioning

confidence: 99%