Multi-head miniature test specimen creep experiment device and test method

A creep test and micro-sample technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of increasing the number of system error variables, unable to ensure the consistency of the sample environment, and lack of material high-temperature performance data. , to avoid load fluctuations, reduce manual recording workload, and reduce the number of materials

Active Publication Date: 2012-06-27
EAST CHINA UNIV OF SCI & TECH
View PDF5 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Three-point bending and four-point bending tests, the sample is simple and easy to operate. Through the data of the bending creep test, the stress and strain of the equivalent uniaxial tensile test can be converted, and the creep activation energy Q of the material can be evaluated. Research The microstructure of the bending specimen and the analysis of the creep mechanical properties of the material, but the data of the high temperature performance of the material obtained through the bending creep test of the micro specimen is less
For the micro-specimen creep test, the required te

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
  • Multi-head miniature test specimen creep experiment device and test method
  • Multi-head miniature test specimen creep experiment device and test method
  • Multi-head miniature test specimen creep experiment device and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Example 1: Creep test of three-point bending micro-specimen under the same temperature and different loads

[0073] Three-point bending micro-sample 30 (size is 20 * 5 * 1.5mm) is packed in the chassis groove 35 of chassis 17, and guide upper mold 25 is installed, and after six micro-samples are all loaded into combined fixture 26, Connect it to the column 21 with two column lock nuts 18, and install the thermocouple 2. Weigh the weight of the indenter 15, the pressing rod 14 and the weight tray 11, and use this weight as the preload of the creep test. Install the pressure head 15, screw the pressure rod 14 into the bottom of the weight tray 11, and pass through the guide sleeve 12 from top to bottom. After the installation is completed, turn the column slightly to make the indenter of each micro-sample contact with the pressure rod and adjust to the same axis direction, but no weight load is applied at this time. The displacement sensor 8 is installed on the sensor c...

Embodiment 2

[0089] Example 2: Creep test of small punch and three-point bending micro-specimen under the same temperature and different loads

[0090] Put the micro-sample 30 (the size of the small punch micro-sample is Φ10×0.5mm, the size of the three-point bending micro-sample is 20×5×1.5mm) into the chassis 17, install the guide upper mold 25, and lock the screw 24 is fixed, after the two micro-samples are all loaded into the combination fixture 26, the combination fixture 26 is connected to the column 21 with two column lock nuts 18, and then the thermocouple 2 is installed. Weigh the weight of the indenter 15, the pressing rod 14 and the weight tray 11, and use this weight as the preload of the creep test. Install the pressure head 15, screw the pressure rod 14 into the bottom of the weight tray 11, and pass through the guide sleeve 12 from top to bottom. After the pressure rods and pressure heads of the two samples are installed, turn the column 21 slightly, so that the pressure he...

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

No PUM Login to view more

Abstract

The invention provides a multi-head miniature test specimen creep experiment device and a multi-head miniature test specimen creep test method. The device comprises a loading system, a clamping system, a heating and temperature control system, a measuring system and an external support frame, wherein the loading system adopts the poise top vertical loading and is positioned at the upper part of the external support frame, the clamping system is fixedly arranged on the external support frame, is positioned at the lower part of the loading system and is placed inside the heating system, the heating system is connected with the bottom of the external support frame and is externally connected with the temperature control system, the measuring system is connected with the loading system and the external support frame and is placed at the upper part of the support frame, and all independent parts are connected into a multi-head creep device system by the external support frame. The experiment device and the test method have the advantages that the problem that the existing creep experiment device cannot carry out multi-head miniature test specimen creep experiments under the low-load condition is solved, the test method and the device capable of simultaneously carrying out creep experiments on a plurality of identical or different-size miniature test specimens under the certain work condition are provided, and the creep experiments in different types such as cantilever beam test specimens, three-point bending, four-point bending and small punch test can also be realized through replacing clamps.

Description

technical field [0001] The invention relates to a novel device for testing the high-temperature creep performance of materials, in particular to a multi-head micro-sample creep test device and a test method. Background technique [0002] In industries such as petroleum, chemical industry, aerospace and nuclear power, many metal structures work in high temperature environment for a long time. Creep is the main form of damage to these high temperature structures. Apply the theory of high temperature structural integrity to accurately evaluate the remaining life of high temperature components in service. It is of great significance to ensure the safe service of high temperature bearing components. [0003] The basic premise of predicting the safety and remaining life of such structures is to obtain the high temperature performance parameters of these components in service. A common method is to obtain these parameters through uniaxial creep tests of standard specimens, but the...

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
IPC IPC(8): G01N3/18
Inventor 涂善东庄法坤周帼彦王琼琦轩福贞
Owner EAST CHINA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap