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DRAPETEST: new automatic drapability tester

News International-French

20 Mar 2012

JEC Europe 2012 - The draping and forming behaviour of standard and non-crimp fabrics is important in the production of three-dimensional fabric-reinforced composite parts.

As such production processes are becoming increasingly automated, drapability and the detection of defects such as gaps, loops, or wrinkles during draping become even more important.


The new automatic drapability tester DRAPETEST, which is the result of a common development between Faserinstitut Bremen (FIBRE), HAINDL Kunststoffverarbeitung, Institut für Textiltechnik (ITA) of RWTH Aachen University, SAERTEX, J. Schilgen and Textechno, can automatically characterize drapability and the formation of defects during draping and forming. The tester combines the measurement of the force required for forming with an optical analysis of small-scale defects such as gaps and loops by means of image analysis. An optional triangulation sensor can determine large-scale defects such as wrinkles. DRAPETEST is suitable for fabrics made of glass, carbon, aramid and similar materials.


As standardized simulation of the draping process, a flat circular sample of the fabric to be tested is deformed at its centre by means of a motor-driven piston. A camera with appropriate illumination inspects the sample at several elevation steps while the sample is rotated in order to inspect a maximum percentage of its surface. In the same manner, the sample is scanned by the optional triangulation sensor.


More information:

Booth U58