Articles about Optics and Photonics, Lasers, Fiber Bragg gratings and FBG sensors

Fiber laser processing methods for multifunctional composites

on March 1, 2019

Recently a group of researchers from Germany has developed fiber laser processing techniques for economical joining, cutting, ablation, and drilling of composite materials, especially, when it comes to existing process chains. The researchers confirm that the mechanical processes, for example, milling, sawing, or water-jet cutting, as well as bonding, can be made by laser technologies.

Canva - Welder, Welding, Industry, Industrial, Manufacturing (1)Also, it should be mentioned that now fiber laser systems have greatly increased the level of their efficiency and quality of overall construction processes. The thing is that all plastics and metals have specific qualities (malleability, strength, or thermal conductivity), and all of them can be a compound of hybrid components with the help of fiber lasers.

Nevertheless, for the creation of hybrid compounds, the preparation of the metal surfaces is required. It can include microstructuring with a continuous-wave/CW fiber laser or micro- or nanostructuring with ultrashort-pulsed/USP laser system with different machine techniques. Herewith, the researches are conducted in magnesium that is considered to be the lightest metal, very perspective for future application.

Moreover, the metal has a specifically high thermal conductivity. The research demonstrates that very soon the developed fiber laser processes will allow magnesium to create very stable and form-fitting connections with various thermoplastics in hybrid injection molding processes. The fact is that the heat-affected zone and the processing time of fiber laser systems are influenced by numerous factors:

  • laser power;
  • scanning speed;
  • cooling time between the scans.

Thus, the researchers analyze these factors and determine the best possible settings for the material that can be used as a component of hybrid parts. This is possible to make due to the ability of CW high-power fiber lasers that have high beam quality.

Especially durable compounds of high-quality can be made carbon-fiber textile is drilled by USP laser system radiation, into which functional parts are implemented in a form-fitting way. Also, laser system scanners allow creating demanding drilling contours, for example, star-shaped holes, and consequently, it is possible o integrate load-adapted inserts.

Finally, the ultrashort-pulsed laser beam machining makes it real to drill both preforms and consolidated CFRP components at high quality.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

editorFiber laser processing methods for multifunctional composites

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