Surface treatment of CFRP composites using femtosecond laser radiation

Oliveira, V.; Sharma, Shabnam; Moura, M.F.S.F. de; Moreira, R.D.F.; Vilar, R.

doi:10.1016/j.optlaseng.2017.02.011

Cited by 125 publications

(66 citation statements)

References 38 publications

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“…For F < 1.6 J/cm 2 (not shown here), the possible transition between HSFL and LSFL was not observed because of the insufficient number of laser pulses. It becomes evident from the SEM micrographs that with increasing F the LSFL become increasingly pronounced, whereby the spatial period Λ remains almost unaffected by the laser 11 peak fluence at Λ = (902  92) nm for F = 2.6 J/cm 2 (Fig. 3c), Λ = (942  77) nm for F = 3.5 J/cm 2 (Fig.…”

Section: Formation Of Hsflmentioning

confidence: 95%

“…While the LIPSS formation on graphite was studied by several groups in dependence on different influencing parameters (beam polarization, laser peak fluence) on the flat surface of bulk materials [28][29][30][31][32], the formation of LIPSS on the surface of carbon fibers is less investigated [11,33]. By performing single-spot experiments on strongly curved fiber surfaces, Sajzew et al [33] demonstrated the formation of LSFL and HSFL within the Gaussian intensity 4 distribution of the focal spot (diameter 50 µm) upon the irradiation of N = 50 linearly polarized fs-laser pulses with a peak fluence F = 4 J/cm 2 .…”

Section: Introductionmentioning

confidence: 99%

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Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

Kunz

Büttner

Naumann

et al. 2018

Carbon

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The formation and properties of laser-induced periodic surface structures (LIPSS) were investigated on carbon fibers under irradiation of fs-laser pulses characterized by a pulse duration  = 300 fs and a laser wavelength  = 1025 nm. The LIPSS were fabricated in an air environment at normal incidence with different values of the laser peak fluence and number of pulses per spot. The morphology of the generated structures was characterized by using scanning electron microscopy, atomic force microscopy and Fast-Fourier transform analyses.Moreover, the material structure and the surface chemistry of the carbon fibers before and after laser irradiation was analyzed by micro Raman spectroscopy and X-ray photoelectron spectroscopy. Large areas in the cm 2 range of carbon fiber arrangements were successfully processed with homogenously distributed high-and low-spatial frequency LIPSS. Beyond 2 those distinct nanostructures, hybrid structures were realized for the very first time by a superposition of both types of LIPSS in a two-step process. The findings facilitate the fabrication of tailored LIPSS-based surface structures on carbon fibers that could be of particular interest for e.g. fiber reinforced polymers and concretes.

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Section: Formation Of Hsflmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

Kunz

Büttner

Naumann

et al. 2018

Carbon

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show abstract

“…Laser-based processes offer advantages over conventional techniques for the cutting, drilling, and surface preparation of composites. Because laser-based processes are non-contact techniques, they minimize the mechanical damage and avoid tool wear and surface contamination [4]. The first lasers used for processing polymer-matrix composites were CO 2 lasers.…”

Section: Introductionmentioning

confidence: 99%

Cutting Characteristics of CFRP Boards Using Electroplated Diamond Wire Tools

Zhang¹,

Tani²

2017

JMEA

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CFRP (carbon fiber reinforced plastic), which is composed of carbon fibers in a resin matrix, is an extremely strong and light composite material that has found use in the aerospace and automotive industries. CFRP boards are very difficult to machine using common machining processes. Various machining artifacts, such as burrs and delamination, occur frequently when machining CFRP. Adequate techniques for machining CFRP have not yet been established. Recently, electroplated diamond wire machining technology has found use in cutting hard, brittle materials such as silicon and sapphire. In this study, we used an electroplated diamond wire saw to cut a CFRP workpiece. We quantified the cutting forces imposed on the workpiece and observed the surface state of the workpiece after cutting. We demonstrated that an electroplated diamond wire tool is suitable for the high-quality machining of CFRP boards.

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“…Because laser-based processes are non-contact techniques, they minimize the mechanical damage and avoid tool wear and surface contamination [4]. The first lasers used for processing polymer-matrix composites were CO 2 lasers.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2015

JMEA

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Surface treatment of CFRP composites using femtosecond laser radiation

Cited by 125 publications

References 38 publications

Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

Cutting Characteristics of CFRP Boards Using Electroplated Diamond Wire Tools

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