We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Surface Characterization of Carbon Fiber Polymer Composites and Aluminum Alloys After Laser Interference Structuring.
- Authors
Sabau, Adrian; Greer, Clayton; Chen, Jian; Warren, Charles; Daniel, Claus
- Abstract
The increasing use of carbon fiber-reinforced polymer matrix composites (CFPC) and aluminum alloys as lightweight materials in the automotive and aerospace industries demands enhanced surface preparation and control of surface morphology prior to joining. In this study, surfaces of both composite and aluminum were prepared for joining using an Nd:YAG laser in a two-beam interference setup, enabling the (1) structuring of the AL 5182 surface, (2) removal of the resin layer on top of carbon fibers, and (3) structuring of the carbon fibers. CFPC specimens of T700S carbon fiber, Prepreg-T83 epoxy, 5 ply thick, 0°/90° plaques were used. The effects of laser fluence, scanning speed, and number of shots-per-spot were investigated on the removal rate of the resin without an excessive damage of the fibers. Optical micrographs, 3D imaging, and scanning electron microscope imaging were used to study the effect of the laser processing on the surface morphology. It was found that an effective resin ablation and a low density of broken fibers for CFPC specimens was attained using laser fluences of 1-2 J/cm and number of 2-4 pulses per spot. A relatively large area of periodic line structures due to energy interference were formed on the aluminum surface at laser fluences of 12 J/cm and number of 4-6 pulses per spot.
- Subjects
CARBON fibers; ALUMINUM alloys; AUTOMOBILE industry; AEROSPACE industries; SURFACE morphology
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2016, Vol 68, Issue 7, p1882
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-016-1936-8