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Metal wire fatigue performance testing apparatus

A technology of fatigue performance testing and metal wire, which is applied in the direction of measuring devices, using applied repetitive force/pulsation force to test material strength, analyzing materials, etc., can solve the problems of rarely testing fatigue life, etc., and achieve a wide range of applications and accelerated fatigue testing , Test the effect of large bending angle

Active Publication Date: 2015-07-15
GRINM MEDICAL INSTR BEIJING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, the method of repeated bending is used to test the superelasticity or memory performance of the memory alloy wire, which is rarely used to test the fatigue life

Method used

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  • Metal wire fatigue performance testing apparatus
  • Metal wire fatigue performance testing apparatus
  • Metal wire fatigue performance testing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A metal wire fatigue performance testing device, such as Figure 1a~1b As shown, it includes: base 1, sliding table 2, slider 3, linear reciprocating stepper motor 4, transmission belt 5, fixing screw 6, driving rod 7a, driving shaft 7b, clamping plate 9, clamping shaft 10, the measured Wire 12, weight 13, motor controller 14;

[0029] Among them, a slide table 2 is erected vertically on the base 1, a slide block 3 capable of sliding up and down is installed on the slide table 2, a linear reciprocating stepping motor 4 is installed on the top of the slide table 2, and a motor controller 14 is installed on the linear reciprocating stepping motor 4 On the top, the linear reciprocating stepping motor 4 is connected with the slide table 2 through the transmission belt 5, and the driving rod 7a is horizontally fixed on the slider 3 through the fixing screw 6, and the driving shaft 7b is connected with the driving rod 7a;

[0030] A clamping plate 9 is respectively erected o...

Embodiment 2

[0034] A metal wire fatigue performance testing device, such as Figure 2a-2b As shown, it includes: base 1, slide table 2, slider 3, linear reciprocating stepper motor 4, transmission belt 5, fixing screw 6, shift lever 7a, limit sleeve 8, clamping plate 9, clamping shaft 10, Limiting slide 11, measured wire 12, motor controller 14;

[0035] Among them, a slide table 2 is erected vertically on the base 1, a slide block 3 capable of sliding up and down is installed on the slide table 2, a linear reciprocating stepping motor 4 is installed on the top of the slide table 2, and a motor controller 14 is installed on the linear reciprocating stepping motor 4 On the top, the linear reciprocating stepping motor 4 is connected with the sliding table 2 through the transmission belt 5, the driving rod 7a is horizontally fixed on the slider 3 through the fixing screw 6, and the limit sleeve 8 is connected with the driving rod 7a;

[0036] A clamping plate 9 is erected on one side of the...

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Abstract

The invention belongs to the technical field of material performance test, and especially relates to a metal wire fatigue performance testing apparatus. The apparatus is formed by a pedestal, a sliding table, a sliding block, a linear reciprocating stepping motor, a driving belt, a fixing screw, a shift lever, a shift shaft, a spacing sleeve, clamping plates, clamping shafts, a spacing sliding plate, a wire, counterweights and a motor controller. The driving belt is driven by the linear reciprocating motor to linearly move in a reciprocating manner, two ends of the tested wire are respectively clamped by the clamping shafts and the counterweights or one end of the tested wire is fixed through the clamping shaft on one of the clamping plates, and the other end of the tested wire is connected with the driving belt to fix the shift shaft or is connected with the spacing sleeve; and the tested wire is driven by the reciprocating movement of the driving belt to be bent in a reciprocating manner until fracture. The apparatus has the advantages of large test bending angle, long stroke, realization of loaded test, realization of setting of the motion distance according to a control program, automatic recording of the bending frequency and time, selection of the clamping shaft or shift shaft with different diameters according to different diameters of the metal wire, and wide application range.

Description

technical field [0001] The invention belongs to the technical field of material performance testing, in particular to a metal wire material fatigue performance testing device. Background technique [0002] The internal microstructure and defects of materials have a great influence on the fatigue life of various metal wires. For example, shape memory alloy is a special functional material with excellent superelasticity, memory performance and damping performance. It also has excellent fatigue performance, biocompatibility and corrosion resistance, as well as good comprehensive mechanical properties. Therefore, , are widely used in aerospace, shipbuilding, medical and petrochemical industries. Titanium-nickel shape memory alloy wire is usually used in the aging state, because in the aging state, there are tiny precipitated phase structures in the alloy matrix. These precipitates have a great influence on the fatigue life of the relative alloy. The bending fatigue life of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/38G01N3/02
Inventor 袁志山王江波王胜难吝德智崔跃李君涛尚再艳缪卫东朱明
Owner GRINM MEDICAL INSTR BEIJING CO LTD