Robot-guided eddy current measurement of yarn orientation change during stepwise 3D draping

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Bardl, G.^1 ; Khan, A.M.^1 ; Nocke, A.^1 ; Cherif, C.^1

Institute of Textile Machinery and High Performance Material Technology, Technical University Dresden, Germany^1

关键词: Carbon fiber fabrics;    Carbon fiber reinforced plastics (CFRP);    Composite parts;    High impact;    Load bearing;    Non-crimp fabrics;    Scanning systems;    Yarn orientation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/4/042005/pdf
DOI  :  10.1088/1757-899X/254/4/042005

来源: IOP

【 摘 要 】

The production of high-performance carbon fiber-reinforced plastics (CFRP) involves the draping of the carbon fiber fabrics to a 3D shape, a process which changes the orientation of the load-bearing fibers in the fabric and therefore has a high impact on the strength of the final composite part. This paper investigates the change in yarn orientation during the 3D-draping process of biaxial carbon-fiber non-crimp fabrics to a hemispherical shape. The draping process is partitioned in several steps, after each of which the yarn orientation in the fabric is measured by a robot-guided eddy current scanning system. The results show that the greatest change in yarn orientation occurs in the final stages of the draping. Furthermore, the yarn orientation change is not linear - in some regions, later draping steps reverse the yarn orientation change from earlier steps. These results are of high importance for a better controlling of the textile draping process.