Title: Effect of laser surface treatment on the adhesive properties of bonded CFRP joints
Language: English
Authors: Harder, Sergej 
Goralski, Philip 
Scharnagl, Nico 
Hergoss, Philipp 
Schmutzler, Henrik 
Fiedler, Bodo  
Keywords: 1060 nm laser; Aerospace; Composite repair; Fatigue; Scarf patch
Issue Date: Jun-2018
Source: ECCM 2018 - 18th European Conference on Composite Materials: (2018-06)
Abstract (english): 
In this work, the effect of an Ytterbium fibre laser treatment on the adhesive properties of scarf bonded carbon fibre reinforced plastics (CFRP) joints has been investigated. The surfaces were scarfed and afterwards laser treated. The effect of laser treatment on the surface morphology was investigated with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The laser treatment resulted in a morphological and chemical change on the CFRP surface. The introduced thermal energy was able to partly strip and roughen up the carbon fibres. The laser treatment increased the carbon and decreased the oxygen, nitrogen and sulphur content on the surface. With the laser treatment the static and fatigue strength of the scarf bonded joints could be improved.
Conference: ECCM 2018 - 18th European Conference on Composite Materials 
URI: http://hdl.handle.net/11420/4615
ISBN: 978-151089693-2
Institute: Kunststoffe und Verbundwerkstoffe M-11 
Document Type: Chapter/Article (Proceedings)
Project: Laserbasierte Oberflächenaktivierung für CFK Klebereparaturen; Teilvorhaben: Bestimmung des Einflusses der Laseraktivierung auf die Material- und Klebeeigenschaften 
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