Subproject A4: Requirements for reproducible production of textile preforms

Supervision
Prof. Dr.-Ing. habil. Knut Großmann
TU Dresden
Institute for Machine Tools and Control Technology
01062 Dresden
Germany
Phone: +49 351 463-34358
Fax: +49 351 463-37073


Prof. Dr.-Ing. habil. Dipl.-Wirt. Ing. Chokri Cherif
TU Dresden
Institute of Textile Machinery and High Performance Material Technology
01062 Dresden
Germany
Phone: +49 351 463-39303
Fax: +49 351 463-39301



Abstract
The subproject A4 („Reproducible Production“, take-up motion, cutting and storing) and the associated subprojects A3 ("Textile spacer fabrics"; weaving) and D4 ("Processing", hot compression-moulding) develops components of a process chain for the fabrication of thermoplastic textile-reinforced composite modules based on glass-polypropylene commingling hybrid yarns. In the first phase of the project 2004-2007, the subproject A4 developed a new take-up-motion, cutting and storing system for woven spacer preforms with rectangular hollow spaces. The aims of subproject A4 from 2008 to 2011 are the design of adapted equipment for take-up and cutting of curved spacer fabrics with variable hollow spaces. Furthermore, the subproject A4 analyses the dynamical interactions between thread systems and power trains of the textile machines for pleat weaving and take-up-motion. The special aim of these analyses is the development of a simulation tool for design and start-up of adapted textile equipment in the collaborative research centre.

By using design methodology in the first project phase 2004-2007, the subproject developed and started running a novel take-up-motion, cutting and storing system for woven spacer preforms with rectangular hollow spaces. At the same time first simulation models for prediction of dynamic warp thread forces have been developed. In the second project phase 2008-2011, the development of equipment for take-up, cutting and storing of curved spacer fabrics with variable hollow spaces is scheduled. The approach is the following:

• developing new principles for take-up, cutting and storing and model-based benchmark,
• design and modification of the principles,
• construction,
• control design and
• initial operation of the mechanical, electrical and control equipment.

The simultaneous development of a comprehensive simulation model for the prediction of interactions between thread systems and power trains of the machine equipment is planned by following steps:

• analysis of the system components,
• composition of dynamic model,
• parameter identification,
• simulation and verification of model and parameters and
• development of a model based initial operation strategy.

Results
The current main result of subproject A4 is the novel take-up-motion, cutting and storing system for woven spacer preforms with rectangular hollow spaces, see figure.