A metal energized shear test device and test method

Abstract

The invention discloses a metal electrification shearing test device and a metal electrification shearing test method. The metal electrification shearing test device can achieve the detection of material shearing strength under the condition of high energy electrical impulse current. A base of the metal electrification shearing test device is mounted on a tester workbench, a concave mold is fixed in the middle of a groove in the base, and a convex mold is located above the concave mold; an insulation plate is located between the convex mold and a connection rod; the connection rod is mounted above the insulation plate and is fastened on the convex mold together with the insulation plate via fastening bolts; a shearing sample is placed into two round holes of the concave mold and symmetrically mounted; a high energy pulse power supply is located at the end part of the base and keeps a safety distance from the base; the lead-out wire of the high energy pulse power supply is fixedly connected onto clamping heads at the two end parts of the shearing sample. According to the invention, via researching the material mechanical performance under the condition of electrification, the influence effect of a high energy pulse on the material mechanical performance parameters is determined, the material mechanical performance parameters are provided under the condition of electrification, in particular to the shearing strength, and the device and the method are applied to electric plastic processing.

Description

technical field [0001] The invention belongs to the field of metal shear tests, and in particular relates to a metal energized shear test device and a test method. Background technique [0002] In addition to bearing tension and pressure, most engineering structural parts also bear the effect of shear force, and in some cases, shear force also plays a major role. For example, the rivets in steam boilers, bridges and aircraft, and the pins on structural parts are all subject to shear force. How their shear strength is related to the safety of components, so it must be used in the design and manufacture of structural parts Consider the shear strength of the material. In recent years, many scholars at home and abroad have introduced high-energy electric pulses as a new technical means into the research of material preparation and experimental processing. Under the action of moving electrons, the deformation resistance of materials decreases sharply and the phenomenon of plasti...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the conventional shear test method cannot meet the electrification requirements in the experiment, as well as the excessive concentration of stress and the non-perpendicularity between the shear section and the sample axis caused by the semicircular shear hole in the ordinary shear test, the present invention proposes a metal electrification Shear test device and test method; by designing a simple shear test device, the determination of the shear strength of the material under the condition of high-energy electric pulse current is realized; by studying the mechanical properties of the material under the condition of electrification, it is determined The effect of material mechanical property parameters, providing the mechanical property parameters of materials under electrified conditions, especially the shear strength, for electroplastic processing

Images