3 research outputs found

    Analiza mechanicznych w艂a艣ciwo艣ci tkanin szklanych i bazaltowych

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    Among many other materials for the reinforcement of composites, technical fabrics are increasingly being used for the same purpose, especially from glass and basalt tows, which have good mechanical properties.. During tensile stress these fabrics are elongated in the direction of tensile force, and at the same time they contract crosswise in relation to the action of the tensile force. In this paper the tensile properties of woven fabrics made from glass and basalt yarns were investigated. Measurements were focused on the lateral contraction, according to which Poisson鈥檚 ratio can be calculated. For these purposes, an innovative device as an upgrade of the strength tester and samples of fabrics of non-standard shapes (cross and square) were used. Mechanical properties of the yarns from which the fabrics were made were analysed before and after weaving in order to define the impact of weaving on them.Materia艂ami cz臋sto stosowanymi dla wzmocnienia kompozytu s膮 tkaniny szklane i bazaltowe posiadaj膮ce dobre w艂a艣ciwo艣ci mechaniczne. Podczas bada艅 wytrzyma艂o艣ciowych tkaniny ulega艂y rozci膮gni臋ciu w kierunku dzia艂ania si艂y oraz ulega艂y skurczowi w kierunku poprzecznym. Podczas bada艅 zwr贸cono szczeg贸ln膮 uwag臋 na kurczenie tkanin zgodnie ze wsp贸艂czynnikiem Poissona, kt贸ry okre艣lano dla poszczeg贸lnych pr贸bek. W tym celu skonstruowano innowacyjne urz膮dzenie wsp贸艂pracuj膮ce z maszyn膮 wytrzyma艂o艣ciow膮. Badano pr贸bki tkanin standardowe oraz o zr贸偶nicowanym kszta艂cie. Prz臋dze stosowane do wytworzenia tkanin by艂y badane przed i po tkaniu w celu oceny wp艂ywu tkania na jako艣膰 prz臋dzy
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