Subproject E1: Development of textile composite-adapted design and integration of functional interfaces
Supervision
Dr.-Ing. Frank Adam
TU Dresden
Institute of Lightweight Engineering and Polymer Technology
01062 Dresden
Germany
Phone: +49 351 463-38149
Fax: +49 351 463-38143
Dr.-Ing. Pawel Kostka
TU Dresden
Institute of Lightweight Engineering and Polymer Technology
01062 Dresden
Germany
Phone: +49 351 463-38151
Fax: +49 351 463-38143
Abstract
Aim of subproject E1 is the development of a new design for hybrid yarn textile thermoplastic (HGTT) composite components. This work is done on the basis of a systematic combination of the solutions generated in the several subprojects of SFB 639. Therefore, a technology demonstrator "function-integrating vehicle system unit" is modelled utilizing the whole SFB process chain. The technology demonstrator is based on modules, so that a great variety of assemblies and functions can be represented by the different innovative semi-finished structures made of textile-reinforced thermoplastics. Additionally, online monitoring of the mechanical strains is arranged, e.g. by integrated sensor networks in the load bearing structures. This provides the opportunity to detect failure-critical loads and damages, or to adjust the driving dynamics of the technology demonstrator through active systems with respect to its actual loading conditions.
On the basis of previous investigations in subproject D4, further guidelines regarding material- and load-adapted design of basic components made of HGTT composites are derived and systemized by numerical and experimental investigations. These design guidelines are evaluated by means of a parameter sensitivity analysis to develop textile-adapted design principles and to combine them in a checklist. A classification of the parameters is done with respect to material and geometric aspects as well as to load cases of technical relevance. Furthermore, the influence of joints to the load-bearing capacity of the textile reinforced lightweight structures is considered in the design checklist.
Another focus in the development of HGTT composites with a high degree of function integration is the conception of innovative functional interfaces between the different basic components. These connections conduce to load transfer as well as to transmission of electric energy and signals in favour of the integrated sensor networks. Therefore, functional interfaces are designed and provided on the basis of joining techniques being developed in project group B. To ensure the electric conductivity, adapted functionalized hybrid yarns have to be arranged in the bonding areas of the basic components which have to be joined.