Abstract
Today’s standard procedures for the repair of fiber reinforced plastics are not optimized for the structural rearrangement of the original material properties. Alongside lap repair and scarf repair, a newly introduced method for the machining of a stepped peripheral zone is discussed. For this purpose, the methods of dry ice blasting and snow blasting as well as the water jet are being investigated. Reference material is carbon fiber reinforced plastic (CFRP) compliant to laminates used in the aviation industry. It was found that snow blasting and dry ice blasting were not suitable for this purpose in the experimental set-up. In contrast, the water jet allowed a precise control of the material removal. Subsequently to the feasibility study, a parameter study was carried out to determine applicable parameters for the surface preparation of CFRP. After successful machining of a stepped peripheral zone, a repair experiment was carried out with promising results.
Highlights
Initiated by the lightweight construction trends during the last few years, a certain group of composite materials has gained an increased interest in the industry: fiber-reinforced plastics (FRP) with a thermo- or duroplastic matrix
The experimental findings of the dry ice blasting tests showed that the method offers enough power for the layer removal of carbon fiber reinforced plastics (CFRP)
By the first experiments it could be shown that the snow blasting method met its performance limits at the abrasion of CFRP
Summary
Initiated by the lightweight construction trends during the last few years, a certain group of composite materials has gained an increased interest in the industry: fiber-reinforced plastics (FRP) with a thermo- or duroplastic matrix. Materials out of this group find extensive use in aeronautical and aerospace engineering, as well as in vehicle construction and many other application areas, where high strength and low weight are required. A big disadvantage of fiber-reinforced plastics has been their reparability in case of damage [1] This is primarily based on the fact that the individually designed mechanical properties of such a material are dependent of shape and orientation of the fiber material, which have to be rebuilt. Loads are led to bypass the damaged or empty section through the additional material
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Strojniški vestnik – Journal of Mechanical Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
