Technological Development of a Yarn Grip System for High-Speed Tensile Testing of High-Performance Fibers

• Autorzy: Unger, Reimar , Schegner, Philipp , Nocke, Andreas , Cherif, Chokri
• Języki publikacji: EN

Abstrakty

EN

Particularly in terms of carbon fiber (CF) rovings and further high performance fibers, it is a highly demanding task to clamp technical yarns with low elongations at break during high-speed tensile tests due to their sensitivity to shear stress. For fibers to be tested, a low elongation at break results in short testing times and requires high acceleration. In this paper, four different yarn grips that can be applied with various test machines will be introduced and compared to a wedge screw grip. By using most sensitive CF rovings, advantages and disadvantages of these gripping devices will be qualitatively evaluated by means of testing machines with test speeds of up to 20 m/s and strain rates of up to 200 s-1, respectively. Hence, the reproducibility and precision of test results were considerably enhanced by optimizing the geometry and mass of yarn grips. Moreover, theoretical approaches and calculations for the design of yarn grips suitable for test speeds of up to 100 m/s will be presented.

Słowa kluczowe

PL

węgiel; włókno o wysokiej wydajności; szybkość odkształcania; badanie na rozciąganie

EN

carbon; high performance fiber; strain rate; tensile testing

• Czasopismo: Autex Research Journal
• Rocznik: 2019
• Tom: Vol. 19, no. 4
• Strony: 347--354
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Unger, Reimar

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology (ITM), 01062 Dresden, Germany,

autor

Schegner, Philipp

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology (ITM), 01062 Dresden, Germany

autor

Nocke, Andreas

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology (ITM), 01062 Dresden, Germany

autor

Cherif, Chokri

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology (ITM), 01062 Dresden, Germany

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Identyfikatory

DOI

10.2478/aut-2019-0014