Multifunctional tester for shape memory alloy wire material

Abstract

The invention relates to a multi-functional test device used for testing the performance of a shape remembrance alloy wire material. A displacement sensor is used to precisely test the size change of the displacement in the recovery process of the shape remembrance alloy wire material. A force sensor is used to precisely test the size change of the recovery stress in the recovery process of the shape remembrance alloy wire material. The device can test the recovery rate and the recovery force of the shape remembrance alloy wire material and the memory fatigue attenuation performance of the shape remembrance alloy wire material under constant load. The device also can test the driving performance of a shape remembrance alloy coupler and the resistance change of the shape remembrance alloy wire material and control the feedback. The device has the advantages of multi-use performance, simple principle, high measurement precision, reliable measurement data, low cost, small volume, easy installation, simple operation, etc. The device plays an important role in the research, the development and the application of shape remembrance alloy.

Description

technical field

[0001] The invention relates to a multifunctional testing device for testing the properties of shape memory alloy wires, in particular to a method for accurately measuring the displacement change of shape memory alloy wires in the recovery process by using displacement sensors and accurately measuring shape memory alloys by using force sensors The change of force during the recovery process of the wire, so as to measure the recovery force and recovery rate of the shape memory alloy wire, test the memory fatigue attenuation performance of the shape memory alloy wire under constant load, and test the elastic coupling body of the shape memory alloy wire The driving performance of the shape memory alloy and the multifunctional test device for measuring the resistance change during the phase transformation of the shape memory alloy and performing feedback control. Background technique

[0002] Shape memory alloys have excellent properties such as superior shape me...

Examples

Embodiment 1

[0031] Test memory alloy fatigue decay under the measurement recovery rate and constant load of embodiment 1

[0032] As shown in Figure 1, it is a schematic diagram of measuring recovery rate and test memory fatigue attenuation performance under constant load for one embodiment of the multifunctional tester for shape memory alloy wire of the present invention; wherein: 11 is a movable upper sleeve; 12 is a shape memory alloy wire; 13 is the main frame; 14 is a displacement sensor; 15 is a weight. The effect of movable upper cover 11 is that it can be transferred up and down, and it is fixed on the main frame when it is transferred to an appropriate position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 12 is fixed on the movable upper sleeve 11, the lower end of the shape memory alloy wire 12 is connected with the weight 15 through a code chip, and the displacement sensor 14 includes a linear incremental o...

Embodiment 2

[0037] Embodiment 2 measures restoring force

[0038] As shown in Figure 2, it is a schematic diagram of measuring the restoring force of the second embodiment of the multifunctional tester for the shape memory alloy wire of the present invention; wherein: 21 is a movable upper sleeve; 22 is a shape memory alloy wire; 23 is the main frame ; 24 is a force sensor. The effect of movable upper cover 21 is to transfer up and down, and it is fixed on the main frame when transferred to a suitable position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 22 is fixed on the movable upper sleeve 21 , and the lower end is connected with the force sensor 24 . The signal output end of the force sensor 24 is connected with an external circuit, and the external circuit is not marked in the figure.

[0039] The specific test steps are as follows:

[0040] (1) Measure the length L1 of the shape-memory alloy wire 22 in a fre...

Embodiment 3

[0043] Example 3 Testing the driving performance of the shape memory alloy coupling body system

[0044] As shown in Figure 3, the schematic diagram of the third embodiment of the multifunctional tester for shape memory alloy wire of the present invention to test the driving performance of the shape memory alloy coupling body system, wherein: 31 is a movable upper sleeve; 32 is a shape memory alloy wire Material; 33 is the main frame; 34 is a displacement sensor; 35 is a spring; 36 is a force sensor. The effect of movable upper cover 31 is to transfer up and down, and it is fixed on the main frame when transferred to a suitable position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 32 is fixed on the adjustable upper sleeve 31 , the lower end of the memory alloy wire 32 is connected with the upper end of the spring 35 through the chip of the displacement sensor, and the lower end of the spring 35 is connect...

technical field

[0001] The invention relates to a multifunctional testing device for testing the properties of shape memory alloy wires, in particular to a method for accurately measuring the displacement change of shape memory alloy wires in the recovery process by using displacement sensors and accurately measuring shape memory alloys by using force sensors The change of force during the recovery process of the wire, so as to measure the recovery force and recovery rate of the shape memory alloy wire, test the memory fatigue attenuation performance of the shape memory alloy wire under constant load, and test the elastic coupling body of the shape memory alloy wire The driving performance of the shape memory alloy and the multifunctional test device for measuring the resistance change during the phase transformation of the shape memory alloy and performing feedback control. Background technique

[0002] Shape memory alloys have excellent properties such as superior shape me...

Examples

Embodiment 1

[0031] Test memory alloy fatigue decay under the measurement recovery rate and constant load of embodiment 1

[0032] As shown in Figure 1, it is a schematic diagram of measuring recovery rate and test memory fatigue attenuation performance under constant load for one embodiment of the multifunctional tester for shape memory alloy wire of the present invention; wherein: 11 is a movable upper sleeve; 12 is a shape memory alloy wire; 13 is the main frame; 14 is a displacement sensor; 15 is a weight. The effect of movable upper cover 11 is that it can be transferred up and down, and it is fixed on the main frame when it is transferred to an appropriate position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 12 is fixed on the movable upper sleeve 11, the lower end of the shape memory alloy wire 12 is connected with the weight 15 through a code chip, and the displacement sensor 14 includes a linear incremental o...

Embodiment 2

[0037] Embodiment 2 measures restoring force

[0038] As shown in Figure 2, it is a schematic diagram of measuring the restoring force of the second embodiment of the multifunctional tester for the shape memory alloy wire of the present invention; wherein: 21 is a movable upper sleeve; 22 is a shape memory alloy wire; 23 is the main frame ; 24 is a force sensor. The effect of movable upper cover 21 is to transfer up and down, and it is fixed on the main frame when transferred to a suitable position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 22 is fixed on the movable upper sleeve 21 , and the lower end is connected with the force sensor 24 . The signal output end of the force sensor 24 is connected with an external circuit, and the external circuit is not marked in the figure.

[0039] The specific test steps are as follows:

[0040] (1) Measure the length L1 of the shape-memory alloy wire 22 in a fre...

Embodiment 3

[0043] Example 3 Testing the driving performance of the shape memory alloy coupling body system

[0044] As shown in Figure 3, the schematic diagram of the third embodiment of the multifunctional tester for shape memory alloy wire of the present invention to test the driving performance of the shape memory alloy coupling body system, wherein: 31 is a movable upper sleeve; 32 is a shape memory alloy wire Material; 33 is the main frame; 34 is a displacement sensor; 35 is a spring; 36 is a force sensor. The effect of movable upper cover 31 is to transfer up and down, and it is fixed on the main frame when transferred to a suitable position, so that shape memory alloy wires of different lengths can be measured. The upper end of the shape memory alloy wire 32 is fixed on the adjustable upper sleeve 31 , the lower end of the memory alloy wire 32 is connected with the upper end of the spring 35 through the chip of the displacement sensor, and the lower end of the spring 35 is connect...

Images