Loading device and loading mode for use in measurement of hydrogen diffusion in stress field

A loading device and stress field technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as test structure interference, test structure data dispersion, adverse effects of hydrogen damage engineering evaluation, etc., and achieve the effect of reducing deviation

Inactive Publication Date: 2012-05-23
DALIAN JIAOTONG UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the unavoidable internal stress in the sample, it will cause great interference to the test structure, making the data of the test structure scattered, affecting people's decision-making on the hydrogen diffusion problem in a specific metal structure, and has great impact on the theoretical research and structural research involving hydrogen damage. Engineering evaluations are adversely affected

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
  • Loading device and loading mode for use in measurement of hydrogen diffusion in stress field
  • Loading device and loading mode for use in measurement of hydrogen diffusion in stress field
  • Loading device and loading mode for use in measurement of hydrogen diffusion in stress field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] A loading device for hydrogen diffusion measurements in stress fields, such as figure 1 shown, including:

[0049] The positioning frame 1 is a rigid support arranged between the hydrogen permeation double electrolytic cells 100 and 200, on which a chute is arranged along the long axis direction of the sample to be tested;

[0050] Two sets of loading frames 21 and 22 are supported by the positioning frame 1, are arranged in parallel along the long axis direction of the sample to be tested 3 and can slide along its chute in the positioning frame 1; each set of loading frames includes two main frames, which are separate On both sides of the sample to be tested 3 along the short axis direction, the sample to be tested 3 is sandwiched in it and is perpendicular to the upper and lower surfaces of the sample to be tested 3, such as figure 2 shown;

[0051]The loading windows 41, 42, 41', 42' are opened on each set of loading frames 21, 22, with the upper and lower surface...

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
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a loading device and a loading mode for use in the measurement of hydrogen diffusion in a stress field. In the loading device and the loading mode, a loading frame and a loading strip apply a load 1 and / or an axially loading platform applies a load 2 and a hydrogen permeation double electrolytic cell is adopted at the same time so as to realize the random change of a dynamic field in the direction of hydrogen permeation in a thin film within a certain range, namely the change of the size, direction and gradient of the stress field to change conditions for hydrogen diffusion and simulate the conditions of hydrogen diffusion in an actual material. The loading device and the loading mode are widely used in the measurement of the metal hydrogen flux and hydrogen diffusion coefficient of a specified stress field, so an advanced technical means is provided for testing the hydrogen corrosion, hydrogen permeation and hydrogen brittleness sensibility of steel and titanium alloy and other materials used in petroleum and natural gas drilling and transmission equipment, hydrogenation reactors, oil and gas transmission equipment, marine fixed structures, submerged pipelines and the like.

Description

technical field [0001] The invention relates to a device for generating a given stress field in a film-like metal sample, which adopts a pair of rigid frames and accessories and cooperates with a hydrogen permeation double electrolytic cell, which can arbitrarily change the hydrogen permeation direction in the film within a certain range. The mechanical field, that is, the magnitude, direction and gradient of the stress field, changes the conditions of hydrogen diffusion, simulates the diffusion conditions of hydrogen in actual materials, and provides advanced research methods for the theoretical study of hydrogen diffusion and the mechanism of hydrogen embrittlement / hydrogen corrosion damage of materials. Background technique [0002] The research on the diffusion kinetics of hydrogen in metal materials generally adopts the "double electrolytic cell method", that is, there are two electrolytic cells on both sides of the film sample to be tested: one is a hydrogen-charging el...

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): G01N17/02
Inventor 权高峰
Owner DALIAN JIAOTONG UNIVERSITY
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