Papers by Keyword: Design Rule

Abstract: With economic growing and health conscious being popular among the people, more and more persons are attracted to attending outdoor sports in China. For enhancing function and comfort of sportswear, this paper focuses on acquiring the requirement of Chinese consumers from both fabric and pattern aspects. Through the customers’ questionnaire and visiting the retailer shop, we investigate status conditions during outdoor sporting such as environment, sports strength and et al. After analyzing the investigated results with data processing, the demands that consumer’s desired was excavated. According to the demands, the key factors of clothing for outdoor sports are confirmed. Design rules for improved sportswear performance are presented.

Abstract: Structural failure of fibre-reinforced polymers (FRP) caused by impact is an important factor in product development for the aircraft industry. Therefore it is necessary to obtain knowledge of the mechanisms and of the material loading during and shortly after an impact load. On account of this a Finite-Element-Model was developed with the goal to deduce design rules for impact tolerant composite materials. To verify and validate the Finite-Element-Model it is essential to have information of the state of stress on the surface of the FRP shortly after the impact. An impact test device was developed at the University of Bremen. The time variable, stress and strain conditions in composite plates are measured using photoelastic technique, strain gauges and holographic interferometry.