Self-sensing elastic energy storage and ejection release testing device for super-elastic memory alloy wire

Abstract

The invention discloses a self-sensing elastic energy storage and ejection release testing device for a super-elastic memory alloy wire. The device is mainly composed of a bottom plate, a gantry vertical plate, a sliding table vertical plate, an electronic ruler support, an upper cross beam, a lower cross beam, a laser sensor support, a guide pipe, a target foam plate, a sliding table, a stepping motor, a force sensor, an electromagnet, a clamping bolt, a laser sensor, a spring self-resetting electronic ruler, a resistance signal conditioner and an ejection body. In the device, a hyperelastic memory alloy wire is fixed between two wire clamps, an electromagnet is powered on to attract an ejection body to clamp the hyperelastic memory alloy wire, a stepping motor drives a sliding table to move downwards to store energy for the hyperelastic memory alloy wire, the resistance, force and displacement of the hyperelastic memory alloy wire are detected, and the electromagnet is powered off to eject the ejection body to a target foam board when the resistance, force and displacement of the hyperelastic memory alloy wire reach preset values. Meanwhile, the laser sensor detects the emitting speed. The device can be used for researching the influence rule of factors such as the diameter, the length, the load and the initial form of the hyperelastic memory alloy wire on self energy storage ejection and resistance self-sensing.

Description

technical field [0001] The invention belongs to the field of superelastic self-sensing testing of superelastic memory alloy wires, in particular to a device for self-sensing 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 drive. It mainly has two characteristics: shape memory and superelasticity. Among them, the shape memory effect refers to the characteristic that the shape memory alloy produces plastic deformation at low temperature, and after being transformed from one shape to another, it returns to the original shape by heating above a certain critical temperature; When the temperature is constant, the shape memory alloy in the austenite state is transformed from austenite to de-twinned martensite under the action of external force. Through the phase transformation between the two phases, the change of microstructure lea...

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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