In-situ detection platform simulating multifield coupling environment

An in-situ detection and platform technology, used in measuring devices, using repetitive force/pulse force to test material strength, instruments, etc., can solve the problems of lack of material corrosion behavior research, inability to reflect load status, and high equipment requirements. The effect of simple operation, wide application range and universal applicability

Active Publication Date: 2019-03-12
NANJING INST OF TECH
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the simulation research on material corrosion protection mostly focuses on the effect of a single field, and there is a lack of research on the corrosion behavior of materials under the coupling effect of multiple fields.
The multi-field coupling can be achieved to a certain extent through the corrosion fatigue testing machine, but the fatigue testing machine is mostly

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
  • In-situ detection platform simulating multifield coupling environment
  • In-situ detection platform simulating multifield coupling environment
  • In-situ detection platform simulating multifield coupling environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The selected AZ31B plate specimen 15 has a length of 120mm, a thickness of 2mm, and a width of 12mm. The time relay 2 is a double-cycle time relay; the variable voltage governor 1; the servo motor 3; the corrosive medium used is simulated body fluid, and the temperature is At 37°C, the speed of the flow field is controlled by the speed-adjustable peristaltic pump 7, the current control load is adjusted by the variable voltage governor 1, the load is measured by the stress sensor 4, and the frequency is adjusted by the time relay 2 to simulate the real human body corrosion environment Bending and corrosion fatigue experiments of magnesium alloy implanted devices at high and high temperatures, the indenters 22 and 25 of the loading composite fixture 6 and the supporting composite fixture 5 are polytetrafluoroethylene, and the impedance of the material is measured in real time through the electrochemical workstation 17 and the corrosion is calculated. speed.

Embodiment 2

[0033] The device used is the same as that in Example 1. The selected metal plate test piece 15 is 150mm, 2mm in thickness, and 40 steel in width of 15mm. The corrosion medium used is sodium chloride solution at a temperature of 25°C. The pump 7 controls the flow field speed, the variable voltage governor 1 is used to adjust the current to control the load, the stress sensor 4 is used to measure the load, and the time relay 2 adjusts the frequency to simulate the cyclic bending corrosion of the plate specimen in the 25°C marine environment In the fatigue test, the indenter 22 of the loading assembly 6 is stainless steel coated with polytetrafluoroethylene, and the indenter 25 of the supporting composite fixture 5 is polytetrafluoroethylene. The impedance of the material is measured in real time by the electrochemical workstation 17 and calculated Get the corrosion rate.

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
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Widthaaaaaaaaaa
Login to view more

Abstract

The invention discloses an in-situ detection platform simulating a multifield coupling environment. The in-situ detection platform comprises a variable voltage controller, a time relay, a stress loading device, a stress detector, a stress applying clamp, a specimen support clamp, a flow field loading device, a corrosive medium supply device, a temperature control device, a reaction vessel, an electrochemical workstation, a flow controller, proportional valve and a computer, wherein the variable voltage controller and the time relay are used for controlling the stress loading device; the stressdetector is used for detecting the magnitude of load; the flow controller, the flow field loading device, the corrosive medium supply device and the reaction vessel are circularly connected one another; the proportional valve and the variable voltage controller are connected for realizing synchronous adjustment and control between the flow rate and applied load; and the electrochemical workstation is used for detecting the impedance of a specimen. The in-situ detection platform can be used for truly simulating a condition that a material is subjected to combined action of a specific-temperature flow field corrosive medium and a circulating bending load and performing real-time in-situ quantitative characterization.

Description

technical field [0001] The invention relates to an in-situ detection platform for simulating a multi-field coupling environment, and belongs to the technical field of material detection. Background technique [0002] To truly, accurately and quantitatively characterize the corrosion behavior of materials or structural parts under stress is a technical issue that material workers generally pay attention to. In reality, most materials or structural parts are often subjected to multi-field coupling during service, including the joint action of flow field, temperature field, stress field and chemical field. For example, offshore platforms are usually subject to the joint action of flow field, stress field and seawater Another example is that orthopedic fixation devices are jointly affected by the flow field formed by body fluids and the cyclic stress field imposed by external movements during the internal service process. Under the joint action of flow field, stress field and c...

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): G01N3/38G01N3/02G01N3/06G01N17/02
CPCG01N3/02G01N3/066G01N3/38G01N17/02G01N2203/0005G01N2203/0023G01N2203/005G01N2203/0073G01N2203/024G01N2203/0242G01N2203/0617
Inventor 李旋曹议文陈珂江昊巴志新王章忠
Owner NANJING INST OF 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