Laser-based repair of carbon fiber reinforced plastics

被引:72
作者
Fischer, F. [1 ]
Romoli, L. [2 ]
Kling, R. [1 ]
机构
[1] Laser Zentrum Hannover eV, Hannover, Germany
[2] Univ Pisa, Dept Mech Nucl & Prod Engn, I-56100 Pisa, Italy
关键词
Laser; Composite; Repair;
D O I
10.1016/j.cirp.2010.03.075
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The recent progress in laser system technology enables innovative techniques for machining of carbon fiber reinforced plastics (CFRPs). A representative application is the layer-by-layer removal of damaged composite material to provide a cavity for refilling with repair plies. Results show that it is possible to achieve a reliable and automatable removal rate to perform arbitrary repair cavity geometries, obtaining a relevant time-reduction with respect to the conventional manual grinding process. The combination of modern UV-laser sources with a scanning technology enabling deflection speeds up to 2 m/s, suppresses heat affected zones (HAZs) and detachment of fibers from the polymer matrix. A method for the selective removal of surface matrix without damaging the fibers beneath is also presented. (C) 2010 CIRP.
引用
收藏
页码:203 / 206
页数:4
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