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High precision microscopic fatigue tester

A fatigue testing machine, high-precision technology, applied in the field of testing machines, to achieve the effect of low system drive current and power consumption, low maintenance and maintenance requirements, and compact structure

Inactive Publication Date: 2011-05-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on fatigue testing machine using servo motor control system and machine vision system

Method used

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  • High precision microscopic fatigue tester
  • High precision microscopic fatigue tester
  • High precision microscopic fatigue tester

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Experimental program
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Embodiment Construction

[0032] A specific embodiment of a high-precision microscopic fatigue testing machine of the present invention is provided below.

[0033] See figure 1 , a high-precision micro-fatigue testing machine, including a test bench system, a servo motor control system and a machine vision system; the servo motor control system is connected to the servo motor driver 2 through a multifunctional data acquisition card 11, and the servo motor driver 2 drives the servo The motor 1 and the servo motor 1 are connected to the reducer, the reducer drives the lead screw of the test bench system, and the lead screw drives the fixture to stretch the sample to realize various fatigue loading modes, microscopic changes appear on the sample surface, and through the machine vision system After the polarization microscope is enlarged, the video image is collected by the camera, displayed on the computer through the image acquisition card, and then the size of the microscopic crack is measured by the im...

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Abstract

The invention discloses a high-precision micro fatigue testing machine which comprises a test bed system, a servo motor control system and a machine visual system, wherein the servo motor control system is connected with a servo motor driver through a multifunctional data acquisition card, while the servo motor driver is connected with a servo motor which is connected with a speed reducer, and the speed reducer is connected with a leading screw in the test bed system, the leading screw is connected with a clamp through a sliding block, the sample in the clamp is connected with a polarizing microscope connecting with a vidicon which is used for monitoring display on the man-machine interface through an image acquisition card, the size of the micro-crack is measured by image processing software. The invention has the advantages of compact structure, simple operation, easy maintenance, high efficiency and energy saving.

Description

【Technical field】 [0001] The invention relates to the technical field of testing machines. Specifically, it is a high-precision micro-fatigue testing machine. 【Background technique】 [0002] With the development of computer technology and electromechanical technology, the deficiencies and limitations of micro-fatigue testing machines have become increasingly prominent, mainly reflected in several places: the structure of the power source system is complex, and the control accuracy is low; the image acquisition and control software is compiled based on the DOS system , not only the calculation and control response is slow, but also can not run on the WINDOWS platform; the accuracy and sensitivity of the force sensor is low. Specifically reflected in the following three aspects. [0003] (1) Power system: [0004] The loading system of the original micro-fatigue testing machine has a complex structure and a large footprint, and it is very inconvenient to adjust the load siz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00
Inventor 易建军陈昌明王亮丁玉洁刘哲
Owner EAST CHINA UNIV OF SCI & TECH
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