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TY  - THES
AU  - Gomer, Andreas
TI  - Ultraschallfertigung von faserverstärkten Kunststoffen
PB  - Rheinisch-Westfälische Technische Hochschule Aachen
VL  - Dissertation
CY  - Aachen
M1  - RWTH-2019-03610
SP  - 1 Online-Ressource (119 Seiten) : Illustrationen, Diagramme
PY  - 2019
N1  - Veröffentlicht auf dem Publikationsserver der RWTH Aachen University
N1  - Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2019
AB  - Due to their high mechanical resilience and low weight, Carbon Fibre Reinforced Plastics (CFRP) are used increasingly in the field of aviation or automotive, where they help to reduce energy consumption or pollutant emissions. However, the major drawback of CFRP is their high material costs. Besides the costs for raw materials, the fabrication of CFRP itself requiring high investment costs for machinery and long overall processing times result in the high material costs of CFRP. On the other hand, required investment costs for ultrasonic welding machines are in the order of some ten thousand Euros. Furthermore, various thermoplastic polymer materials can be processed within some seconds. Therefore, it was the goal of this work to examine ultrasonic processing for the fabrication of CFRP. In the beginning of the work, a standardized process was defined for manufacturing of the samples and performing of mechanical tensile tests. Those standards were applied in the following and helped increasing the reproducibility of fabrication as well as the comparability of the results of tensile tests. Afterwards, the ultrasonic fabrication process of CFRP was developed systematically. Dry and untreated carbon fibres between solid polymer foils serving as a matrix were ultrasonically processed to single-layered and multi-layered CFRP. By choosing suitable process parameters and the thickness of the polymer material, CFRP samples were ultrasonically fabricated. In this process, all carbon fibres were embedded completely into the matrix and homogenously distributed over the cross section of the CFRP. The number of carbon fibre layers was increased successively up to 20 layers and CFRP with a total thickness of up to 2.5 mm were manufactured. Furthermore, a fibre volume content of the CFRP of 31.6 
LB  - PUB:(DE-HGF)11
DO  - DOI:10.18154/RWTH-2019-03610
UR  - https://publications.rwth-aachen.de/record/759482
ER  -