Unlock instant, AI-driven research and patent intelligence for your innovation.

A Dynamic Modulus Monitoring and Feedback System Based on SMA

A technology of dynamic modulus and feedback system, applied in the field of alloy materials, to achieve the effect of broad application prospects

Active Publication Date: 2022-03-22
SHANGHAI JIAOTONG UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a dynamic modulus monitoring and feedback system based on SMA, using SMA microwires as the core component of modulus measurement and control, to solve the lack of target monitoring in the prior art. The problem of real-time resolution and data feedback of the elastic modulus of the material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Dynamic Modulus Monitoring and Feedback System Based on SMA
  • A Dynamic Modulus Monitoring and Feedback System Based on SMA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057]Build a dynamic modulus monitoring and feedback system based on SMA, using springs as the expansion and contraction sections in the restraints, the springs are spring wires or spring sheets, the fixed module is a metal or ceramic baffle with holes, and the baffle is in the form of blocks or sheets shape. Silicon carbide is used as the probe, one end of the probe is connected to the fixed module at one end of the constraint, and the other end of the probe runs through the fixed module at the other end of the constraint. The length of the probe is d 0 The diameter of the probe is 4mm, and the diameter of the probe is 0.3mm; the two ends of the driving telescopic element are respectively connected with the fixed modules at both ends of the restraining element, and the selected shape memory alloy wire is a nickel-titanium-based shape memory alloy wire, and its diameter is 30 microns, and the drive wire length matches the probe length.

[0058] First set the detection strok...

Embodiment 2

[0062] Build a dynamic modulus monitoring and feedback system based on SMA, using springs as the expansion and contraction sections in the restraints, the springs are spring wires or spring sheets, the fixed module is a metal or ceramic baffle with holes, and the baffle is in the form of blocks or sheets shape. Silicon carbide is used as the probe, one end of the probe is connected to the fixed module at one end of the constraint, and the other end of the probe runs through the fixed module at the other end of the constraint. The length of the probe is d 0 The diameter of the probe is 3.5mm, and the diameter of the probe is 0.3mm; the two ends of the driving telescopic element are respectively connected with the fixed modules at both ends of the restraining element, and the selected shape memory alloy wire is a nickel-titanium-based shape memory alloy wire. is 25 microns, and the drive wire length matches the probe length.

[0063] First set the detection stroke Δl of the pr...

Embodiment 3

[0067] Build a dynamic modulus monitoring and feedback system based on SMA, using springs as the expansion and contraction sections in the restraints, the springs are spring wires or spring sheets, the fixed module is a metal or ceramic baffle with holes, and the baffle is in the form of blocks or sheets shape. Silicon carbide is used as the probe, one end of the probe is connected to the fixed module at one end of the constraint, and the other end of the probe runs through the fixed module at the other end of the constraint. The length of the probe is d 0 The diameter of the probe is 3.0mm, and the diameter of the probe is 0.3mm; the two ends of the driving telescopic element are respectively connected with the fixed modules at both ends of the restraining element, and the selected shape memory alloy wire is a nickel-titanium-based shape memory alloy wire. is 50 microns, and the drive wire length matches the probe length.

[0068] First set the detection stroke Δl of the pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
diameteraaaaaaaaaa
modulusaaaaaaaaaa
Login to View More

Abstract

The invention provides a dynamic modulus monitoring and feedback system based on SMA, which includes the following components: the restraint includes a telescopic section and fixed modules located at both ends of the telescopic section; one end of the probe is connected to the fixed module at one end of the restraint, and the probe The other end runs through the fixed module at the other end of the restraint; the two ends of the drive telescopic part are respectively connected to the fixed modules at both ends of the restraint part, and the drive telescopic part is a shape memory alloy wire and connected to an external power supply, which is used to drive the telescopic section to shrink through shrinkage, thereby Determines the peak current of the external power supply at which the probe is extended for the set probing stroke. The present invention further provides an SMA-based dynamic modulus monitoring and feedback method. The present invention provides an SMA-based dynamic modulus monitoring and feedback system, using SMA microwires as the core component of modulus measurement and control, which can directly reflect the elastic modulus of the measured object according to the current peak value in the pulse driving process, and the test accuracy Reach more than 85%.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and relates to an SMA-based dynamic modulus monitoring and feedback system, in particular to a shape memory alloy (SMA)-based miniature real-time dynamic modulus monitoring and feedback testing system. Background technique [0002] In the small strain range, the material is in the elastic deformation stage. At this time, the stress and strain are generally proportional, and the proportional coefficient is called the elastic modulus. The elastic modulus is usually used to indicate the hardness or softness of the material or the difficulty of deformation, and it is one of the key engineering parameters. On the one hand, it is used as an important criterion for engineering material selection, or it can also be used to judge the properties of materials. There are three main traditional testing methods for elastic modulus: static wave, wave propagation method and dynamic method. The specific...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02
CPCG01N3/02G01N2203/0075
Inventor 金明江金学军
Owner SHANGHAI JIAOTONG UNIV