Textile structures modeled on a spider's net

Innovative textile fabrics modelled on the structure of a spider web can find application in the reinforcing of composites in conditions of where a centrifugal force occurs, for example rotational discs. At the Institute of Architecture of Textile at the Technical University of Łódź research work is carried out on mechanised production of woven fabrics whose struc- ture is modelled on a spider webweb. The paper presents a review of textile techniques and technologies from the point of view of their usefulness for producing fabrics of a flat round net type structure modelled on the structure of a spider web.There is also an analysis of the mechanical properties of the different textile structures from the point of view of fulfilling the requirements to operate in conditions which are affected by a centrifugal force

Specific Properties of Woven Multiaxial Structures

The development of the construction and technology of multiaxial fabrics should be accompanied by exploring their specific properties. On the one hand, there is a need to assess the behaviour of such woven structures under complex loading, while on the other there are no appropriate tools to conduct such research. This paper presents a prototype of a bi-directional load testing machine which was used to generate complex stress in tri- and foura-xial fabrics. Fabrics used for the tests were made of woven polyester tapes subjected to the thermal stabilisation process in order to unify their properties. As was expected, the results confirmed that increasing the number of axes in the fabric results in improved directional properties and increases the transfer of oblique loads in relation to the main axis. In the case of multiaxial fabrics, longitudinal rigidity in both directions can be increased by either increasing the number of axes or reducing working-in of threads (tapes) in the fabric. A multiaxial fabric may replace a package composed of many orthogonal fabrics when reinforcement of a composite exposed to complex multidirectional loading is required