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Elastic wire fatigue performance testing device and using method thereof

A technology of fatigue performance testing and elastic wire, which is applied in the direction of measuring devices, using repeated force/pulsation force to test the strength of materials, and analyzing materials, can solve the problems of rarely testing fatigue life and achieve a wide range of applications.

Pending Publication Date: 2020-10-13
GRINM MEDICAL INSTR BEIJING CO LTD
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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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  • Elastic wire fatigue performance testing device and using method thereof
  • Elastic wire fatigue performance testing device and using method thereof
  • Elastic wire fatigue performance testing device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A device for testing the fatigue performance of elastic wire, such as Figure 1~3 As shown, it includes: base 1, slide table 2, magnetic slider 3, electromagnet 4, briquetting block 5, relay power supply 6, relay 7, timer 8, timer power supply 9, pad 10, measured wire 12 , mandrel fixing rod 13, mandrel 11;

[0022] Among them, the slide table 2 is erected vertically on the base 1, the slide block 3 that can slide up and down through the dovetail groove is installed at the bottom of the slide table 2, the electromagnet 4 with adjustable position is installed on the top of the slide table 2 through the dovetail groove, the relay power supply 6 and The relay 7 and the electromagnet 4 form a circuit. When the electromagnet 4 is energized, the magnetic slider 3 can slide up and down in the dovetail groove of the slide table 2 . The relay energization time interval is 3 seconds, the energization current is 2A, and the action distance of the magnetic slider is 5mm.

[0023]...

Embodiment 2

[0027] A device for testing the fatigue performance of elastic wire, such as Figure 1~3 As shown, including: base 1, slide table 2, slide block 3, electromagnet 4, briquetting block 5, relay power supply 6, relay 7, timer 8, timer power supply 9, pad 10, measured wire material 12, Mandrel fixing rod 13, mandrel 11;

[0028]Among them, the slide table 2 is erected vertically on the base 1, the slide block 3 that can slide up and down through the dovetail groove is installed at the bottom of the slide table 2, the electromagnet 4 with adjustable position is installed on the top of the slide table 2 through the dovetail groove, the relay power supply 6 and The relay 7 and the electromagnet 4 form a circuit. When the electromagnet 4 is energized, the magnetic slider 3 can slide up and down in the dovetail groove of the slide table 2 . The relay energization time interval is 2 seconds, the energizing current is 2A, and the slider action distance is 10mm.

[0029] The mandrel 11,...

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Abstract

The invention discloses an elastic wire fatigue performance testing device and a using method thereof, and belongs to the technical field of material performance testing. The testing device is composed of a base, a sliding table, a sliding block, an electromagnet, a pressing block, a relay power supply, a relay, a timer, a timer power supply, a tested wire, a mandrel fixing rod, a mandrel and a cushion block. One end of the tested wire is fixed by the pressing block, and the other end of the tested wire is driven by the sliding block to repeatedly act around the mandrel until breaking. The sliding block is driven by the electromagnet controlled by the relay to pull a titanium-nickel alloy wire to repeatedly act around the mandrel, the deformation speed and the deformation degree can be controlled, when the wire is subjected to fatigue fracture, the timer connected with the wire stops working, and fracture time is recorded, so the fracture frequency is calculated. The test bending angleand the deformation speed of the device are adjustable, the action distance can be set, and the bending frequency and time can be automatically recorded. Mandrels with different diameters can be selected according to metal wires with different diameters, so the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of material performance testing, in particular to a device for testing the fatigue performance of elastic wires and a method for using the same. Background technique [0002] The fatigue life of metal wire has a great influence on the life of medical devices, especially vascular stents. Therefore, the fatigue life test of metal wire products has important guiding significance for the use of metal wire vascular stent products. 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, it is Widely used in industries such as aerospace and medical. The inclusions and precipitations in the titanium-nickel shape memory alloy matrix have a great influence on the fatigue life of the wire, and the t...

Claims

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Application Information

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IPC IPC(8): G01N3/38G01N3/02
CPCG01N3/38G01N3/02G01N2203/0005G01N2203/0023G01N2203/005G01N2203/0073G01N2203/0202G01N2203/028G01N2203/0688
Inventor 袁志山张宝祥赵国行王振强冯昭伟李君涛廖赞杨阳
Owner GRINM MEDICAL INSTR BEIJING CO LTD
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