Claudia Herzberg

Links between design, pattern development and fabric behaviours for clothes and technical textiles

Shows the necessity of developing powerful 3D CAD‐systems for the textile and clothing industry. The connection between 2D and 3D CAD‐systems enables the user to prepare a collection more quickly and accurately. Applications could be the drape behaviour of the fabric, the deformational behaviour of fabrics when covering defined surfaces and also technical textiles.

Garnkonstruktionen und Garnbildungstechniken

Garne sind ein wichtiges Basiselement sowohl for die Herstellung textiler Verstarkungsstrukturen als auch for deren Montage. Sie bestehen zu 100% aus Verstarkungsfasern oder aus einer Mischung von Verstarkungs- und Matrixfasern. Sie werden aus Filamenten oder/und Spinnfasern nach unterschiedlichen Technologien hergestellt, so dass Struktur und Eigenschaften der Garne entsprechend ihrer funktionalen Anforderungen masgeschneidert werden konnen. Dieses Kapitel gibt einen Uberblick uber die derzeit vorrangig im Leichtbau eingesetzten Garne und zeigt, dass ihre Konstruktion masgeblich dieWeiterverarbeitung sowie die Verbundwerkstoffeigenschaften beeinflusst.Wahrend der textilen Verarbeitung mossen sich Garne problemlos bei hohen Geschwindigkeiten abziehen und schadigungsarm kraft- oder formschlossig umformen lassen. Durch die Vorzugsorientierung der Fasern im Garn und die wahrend der textilen Halbzeugherstellung gewahlte Garnausrichtung im 2D- oder 3D-Raum werden definierte richtungsabhangige Eigenschaften erzielt. Im Verbundwerkstoff selbst bietet die Garnstruktur gegebenenfalls mechanische Verankerungspunkte.

Load‐adapted 3D‐reinforcement by means of function‐adjusted ready‐making process

Complex material requirements for high‐technology applications increasingly demand the use of hybrid material structures with properties tailored to the lines of loading. Textile‐reinforced multilayer composite structures are particularly suitable for the production of component structures in an optimised lightweight construction. In the loading case, however, delaminating phenomena occur between the individual layers due to the low interlaminar shear strength. The appropriate techniques and machines of the ready‐made‐clothing technology allow the specific sewing‐up of the semifinished textile products into a three‐dimensionally reinforced multilayer composite structure; the setting of a load‐adapted and failure‐tolerant characteristic of properties being possible in the z‐direction through a versatile variation of sewing parameters. Moreover, the sewing technology makes possible a ready‐made‐clothing‐technological preassembly of components of semi‐finished products, and thus can perform position‐fixing f...

New shielding protective equipment for live working

The new protective equipment forms a FARADAY cage, thus protecting the worker from unacceptably strong electrical fields as well as from being invaded by dangerous electric currents. The protective shielding clothing described is a personal protective equipment of the highest category. Therefore, it must be certified by an acknowledged examining and certifying authority. An application with regard to the attestation of conformity for this protective clothing hasbeen submitted to the Examination andCertification Section of the Expert Committee for Electrical Engineering.

Yarn Constructions and Yarn Formation Techniques

Yarns are an important basic element for both the production and the assembly of textile reinforcement structures. They consist of either a 100 % reinforcement fibers or a blend of reinforcement and matrix fibers. They are made from filaments and/or staple fibers by means of different technologies, which allow the customization of structure and properties of the yarns according to the respective functional requirements. These chapters give an overview of the yarns currently used in lightweight construction and shows that their design has considerably influence of further processing and on the characteristics of composite materials. During textile processing, the yarns have to be processed easily at high speeds and must be formable force- or form-fit. Defined, anisotropic characteristics are achieved by the preferred orientation of the fibers in the yarn and the 2D or 3D yarn orientation during the production of textile semi-finished products. In the composite material itself, the yarn structures offer mechanic fixations.