Abstract
The influence of different machine settings for the manufacture of biaxial carbon fiber braids is investigated using numerical models and compared with experimental results. For these studies different process parameters like yarn pre-tension and rotational speed of the bobbins have been varied to generate cylindrical biaxial braids with an average braid angle of ±45°. From a test program the non-uniform distribution of the braid angle and cover factor is observed using image processing techniques of the produced samples. In parallel, ongoing work is using numerical simulations of the braiding process to identify defects, and investigations have been able to correlate numerical results with experimentally observed defects.
Highlights
Rotary braiding is an effective manufacturing technique to produce near net-shape preforms in a costand time-efficient manner, and is a widely used textile preforming process in the automobile, aerospace, sports and other industries
In this work biaxial carbon fiber braids with an average braid angle of ±45° have been manufactured with different process parameters
A characterization of the preforms is done using image processing techniques. These results show that the braid angle and the yarn width are dependent on process parameters
Summary
Series: Materials Science and Enginee1ri2n3g44506678(920‘1’8“)” 012047 doi:10.1088/1757-899X/406/1/012047. R Czichos1,*, O Bareiro, A K Pickett, P Middendorf and T Gries Institute of Aircraft Design (IFB), University of Stuttgart, Pfaffenwaldring 31, 70569. Germany 2 Institut für Textiltechnik (ITA), RWTH Aachen University, Otto-Blumenthal-Straße
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