Interlaminar fracture toughness of carbon fiber reinforced thermoplastic in-situ joints

Autor: V. Radlmaier, G. Obermeier, S. Ehard, H. Koerber, A. Kollmannsberger, E. Ladstaetter
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Popis: Due to their ability to form fusion bonds, composites with thermoplastic matrix offer new opportunities to assemble complex structures with a multitude of single components. By combining the laser-assisted Thermoplastic Automated Fiber Placement process (TP-AFP) with the thermoforming technology, a time-efficient process chain for producing hollow skin-stiffener structures was developed. Removable core systems are inserted into the cavity of thermoformed omega profiles for subsequent TP-AFP processing of skin layers to the top of the flanges. This enables in-situ joining between the flanges of the thermoformed profile and the skin layers without the need for other joining technologies or supplementary bonding materials. Mode I interlaminar fracture toughness tests were conducted to evaluate the performance of this joining strategy. Partially fiber-placed and thermoformed test specimen were produced by the combined TP-AFP/thermoforming process transferring the developed joining strategy to coupon level. In...
Databáze: OpenAIRE