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Modified V-notched rail shear test fixture for shear characterisation of textile-reinforced composite materials
Affiliation:1. Technische Universität Dresden, Institut für Leichtbau und Kunststofftechnik, 01062 Dresden, Germany;2. Leichtbau-Zentrum Sachsen GmbH, Marschnerstraße 39, 01307 Dresden, Germany;1. Division of Polymer Engineering, School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia;2. Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), P.O Box 77, D/A Pejabat Pos Besar, Kangar, Perlis, 01000, Malaysia;1. Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, 8001, Australia;2. College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, 8001, Australia;1. Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;2. Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;3. Centro de Microscopia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil;4. Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil
Abstract:The V-notched rail shear test (VNRS) is recognised as a standard test method for the determination of shear modulus and shear strength of fibre-reinforced composite materials. This method is based on a double V-notched specimen with a large gauge section and an approximately uniform shear stress distribution between the two notches. The construction of the test device prescribed in standards was revised with the main focus of lines of force as well as precise and economic specimen clamping. Therefore, the modified test fixture has been equipped with guide units and the number of clamping bolts could be reduced. The standardised and modified VNRS fixtures were evaluated using a finite element method. It can be shown that the modified VNRS test fixture is well suited for robust and reliable material characterisation of shear property data.
Keywords:Mechanical properties  Mechanical testing  Shear  Finite element analysis (FEA)
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