Production method of carbon-pultrued-plate single-lap tensile shearing specimen

Abstract

The invention provides a production method of a carbon-pultrued-plate single-lap tensile shearing specimen. The production method of the carbon-pultrued-plate single-lap tensile shearing specimen comprises the following steps: (1) cutting a carbon pultrued plate into four specimen pieces with the same length, and covering both specimen pieces in the four specimen pieces with first isolation films; (2) laying devices for the carbon-pultrued-plate single-lap tensile shearing specimen; (3) turning on a vacuum pump, and conducting vacuum operation; (4) conducting resin infusion; (5) after resin infusion is completed, conducting heat preservation and curing operation; and (6) after heat preservation is completed, conducting demoulding. According to the production method of the carbon-pultrued-plate single-lap tensile shearing specimen, a vacuum infusion mode is adopted for producing the carbon-pultrued-plate single-lap tensile shearing specimen, the problem that production of single-lap-interface specimens through glue joint of fluid resin is difficult is solved, an actual product production technology is simulated, a bubble rate of a lap interface of the produced specimen is low, the quality is higher, and the product performance is elevated more accurately.

Description

technical field [0001] The invention belongs to the technical field of single-lap tensile shearing, and in particular relates to a method for manufacturing a single-lap tensile shear sample of a carbon pultrusion plate. Background technique [0002] The test of the tensile shear strength of single lap is usually used to evaluate the partial superposition of the main surfaces of two substrates, and form a single lap joint by bonding. Under the action of axial tensile load parallel to the lap joint, An important measure of the magnitude of the stress at which a single lap joint fails. Tensile shear specimens with single lap joints and their dimensions as figure 1 . The test principle is to add a gasket to the end of the base material to form a geometrically antisymmetric sample. During the stretching process, the tensile load parallel to the lap joint surface will destroy the sample, so as to measure the shear stress at the lap joint. All of the above When the above-mention...

AI Technical Summary

Problems solved by technology

With the continuous development of wind power blade manufacturing technology, carbon pultruded boards are used in blade manufacturing. In the application process of carbon pultruded boards, the same layer is usually spliced, and the upper and lower layers are laminated. Corresponding materials were used for resin diversion in order to test the single lap shear strength of the upper and lower layers of carbon pultruded plates. However, since the resin is a fluid with low viscosity, the resin is directly applied to the diversion medium for bonding. Sample preparation is difficult, resulting in low work efficiency

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