A Fixture for Shear Test of Riveted Parts of Composite Material Plate and Aluminum Alloy Plate

Abstract

The invention discloses a fixture for shear tests on composite material plate and aluminum alloy plate riveting components. The fixture comprises a first clamp plate, a second clamp plate, two fastening plates, two extensometer fixing cutter point fixture blocks and related connecting pieces. The first clamp plate and the second clamp plate comprise clamp sections, positioning steps and test piece clamp plates, and a key slot, a test piece accommodating slot and a boss guide positioning key are sequentially arranged on each test piece clamp plate from one end of the corresponding positioning step to the other end of the positioning step; through holes for arranging rivets are formed in the bottom of the test piece accommodating slots; the clamp sections of the first clamp plate and the second clamp plate are positioned at two ends when the fixture is about to be assembled, the two boss guide positioning keys are embedded in the two key slots so that the clamp plates can be fastened with each other, the fastening plates are fixed onto the boss guide positioning keys, and the two extensometer fixing cutter point fixture blocks are positioned on the same sides of the first clamp plate and the second clamp plate. The fixture has the advantages that the fixture can bring convenience for tensile shear tests on small lap joint shear test pieces made of special materials, extensometers can be clamped, and conditions of shear force varying along with displacement can be measured in real time.

Description

technical field [0001] The invention belongs to the technical field of performance detection of lap riveted joints of dissimilar materials of a composite material plate and an aluminum alloy plate, and in particular relates to a fixture device for realizing a shear test of a riveted part of a composite material plate and an aluminum alloy plate. Background technique [0002] Composite material is a new type of material composed of several different materials such as organic polymers, inorganic non-metals or metals through a composite process. It can not only retain the main characteristics of the original component materials, but also make the components of each component The properties complement each other to obtain superior properties that cannot be compared with the original component materials. The advanced composite materials currently developed have the advantages of high specific strength, specific stiffness, good thermal conductivity, electrical conductivity, therma...

AI Technical Summary

Problems solved by technology

At present, since there is no fixture for the shear tensile test of composite materials and aluminum alloy lap riveted joints, only lap shear tensile specimens similar to spot welded joints can be used, but the strength of composite materials is significantly lower than that of Aluminum alloy plate, in this shear tensile test the lap joint of the composite material will fail in shear first and the shear strength of the rivet cannot be tested

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