A self-sensing elastic energy storage and ejection release test device for superelastic memory alloy wire

Abstract

The invention discloses a superelastic memory alloy wire self-sensing elastic energy storage and ejection release test device, which mainly consists of a bottom plate, a gantry vertical plate, a sliding table vertical plate, an electronic ruler bracket, an upper beam, a lower beam, a laser sensor bracket, and a conduit. , Target foam board, sliding table, stepping motor, force sensor, electromagnet, clamping bolt, laser sensor, spring self-resetting electronic ruler, resistance signal conditioner, and projectile. In this device, the superelastic memory alloy wire is fixed between two wire clamps, the electromagnet is energized to pull the projectile together and clamp the superelastic memory alloy wire, and the stepping motor drives the sliding table to move down to store energy for the superelastic memory alloy wire. The resistance, force and displacement of the superelastic memory alloy wire are detected. When the preset value is reached, the electromagnet is powered off and the projectile is ejected to the target foam board. At the same time, the laser sensor detects the injection speed. The device can study the influence of superelastic memory alloy wire diameter, length, load, initial shape and other factors on its own energy storage ejection and resistance self-sensing.

Description

technical field [0001] The invention belongs to the field of superelasticity self-perception testing of superelastic memory alloy wires, in particular to a device for self-perception elastic energy storage and ejection release testing of superelastic memory alloy wires. Background technique [0002] Shape memory alloy is a new type of smart material that integrates perception and actuation. It mainly has two characteristics of shape memory and superelasticity. Among them, the shape memory effect refers to the plastic deformation of the shape memory alloy at low temperature, after changing from one shape to another shape, and then returning to the original shape by heating above a certain critical temperature; superelasticity refers to the characteristics of When the temperature is constant, the shape memory alloy in the austenite state transforms from austenite to detwinned martensite under the action of external force. Then, the detwinned martensite reversely transforms in...

AI Technical Summary

Problems solved by technology

However, there are few studies on the self-sensing elastic energy storage and release of existing superelastic memory alloy wires, and there is a lack of testing devices for their energy storage and release performance, and the superelastic memory of different wire diameters, lengths, loads, and initial shapes cannot be tested. Alloy wire for complete testing

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