Laser-induced periodic surface structures on stainless steel moulds for thermoplastic composite materials manufacturing

Matthias Feinaeugle*, Marek Mezera, Gerardus Richardus, Bernardus, Engelina Römer

*Corresponding author for this work

    Research output: Contribution to conferencePaper

    Abstract

    Steel moulds are widely used as forming tools during the fabrication of fibre reinforced thermoplastic composite parts. The aim of this work is to study sub-micron laser-induced surface modifications which help to control interfacial properties, such as undesirable sticking, between the composite polymer and the steel mould material.
    Stainless steel (AISI 430) samples were machined with a laser with wavelength of λ = 515 nm and 7 ps pulse duration. The periodicity of the Laser-induced Periodic Surface Structures (LIPSS) was determined, via fast Fourier transform of scanning electron microscope images, as a function of input parameters, such as effective number of laser pulses, pulse energy and accumulated fluence.
    Above a certain threshold, LIPSS appear over a broad range of fluences. Spatial frequencies were found to be between about λ/10 and ~λ for laser pulse energies of up to ~1 µJ. First results from experiments on interaction of composite polymers and steel moulds are also shown.
    Original languageEnglish
    Publication statusPublished - 24 Jun 2019
    EventLasers in Manufacturing 2019 - International Congress Center Munich, Munich, Germany
    Duration: 24 Jun 201927 Jun 2019
    https://www.wlt.de/lim/index.html

    Conference

    ConferenceLasers in Manufacturing 2019
    Abbreviated titleLiM 2019
    CountryGermany
    CityMunich
    Period24/06/1927/06/19
    OtherAs a part of the World of Photonics Congress
    Internet address

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