Vertical tensile test device containing novel fibre cloth clamp

Abstract

The invention belongs to the technical field of tensile test devices, and particularly relates to a vertical tensile test device containing a novel fibre cloth clamp. The vertical tensile test devicecontaining the novel fibre cloth clamp comprises the fibre cloth clamp, a testing machine clamping head, a load sensor and displacement meters; the fibre cloth clamp comprises a main body steel shell,high-strength bolts, small bolts, a spherical hinge and a steel clamping plate; the testing machine clamping head comprises an upper testing machine clamping head and a lower testing machine clampinghead; an inner testing machine clamp is fixed to the centre of the lower testing machine clamping head, is integrally placed below the main body steel shell, and is used for fixing other small test devices or fibre cloth. According to the vertical tensile test device containing the novel fibre cloth clamp, the defects that most existing single shear test devices are loaded transversely and forcetransfer of the fibre cloth clamp is non-uniform are overcome; and uniform stress of the fibre cloth at an end part can be ensured, so that the acquisition of accurate and stable test data is facilitated.

Description

technical field [0001] The invention belongs to the technical field of tensile testing devices, and in particular relates to a vertical tensile testing device containing a novel fiber cloth clamp. Background technique [0002] Usually, before systematically analyzing the bonding performance of the FRP-concrete interface, the relevant basic mechanical performance indicators of the fiber cloth must be obtained, such as ultimate tensile strength, elastic modulus, Poisson's ratio, elongation and other parameters, Therefore, it is necessary to first make the fiber cloth into a standard test specimen according to the specific size requirements in the "Test Method for Tensile Properties of Oriented Fiber Reinforced Plastics", and then paste local reinforcement sheets (generally aluminum alloy plates or fiber Reinforced plastic plate) and then conduct a unidirectional tensile test, that is, place the reinforcing sheet on the fixture of the testing machine for axial tension. [0003...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect that most of the existing single shear test devices are laterally loaded and the force transmission of the fiber cloth clamp is uneven, and to provide a vertical tensile test device containing a new type of fiber cloth clamp. The hinges are directly connected, and can ensure that the fiber cloth is evenly stressed at the end, so as to obtain accurate and stable test data, and simplify the centering process before the test

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