Laser surface modification of carbon fiber reinforced composites
journal contributionposted on 25.11.2015, 13:19 authored by M. Nattapat, Sundar Marimuthu, A.M. Kamara, Mohammadreza Nekouie Esfahani
The removal of top resin layer is an essential task prior to adhesive bonding of carbon fiber reinforced polymer (CFRP) composites. This paper investigates the technical feasibility of using a low power continuous wave carbon dioxide laser for removing the top resin layer of CFRP without damaging the underlying fiber. The operating window and damaging threshold were experimentally determined. Irradiating the CFRP surface at a power of 14 W, scanning speed of 880 mm/sec, and a beam overlap of 25% provides an optimal thermal condition for removal of top resin layer. A finite element model was used to explain the removal mechanisms.
The authors acknowledge the support offered by the UK Engineering and Physical Sciences Research Council (EPSRC) under the grant EP/L01968X/1.
- Mechanical, Electrical and Manufacturing Engineering