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Fatigue property test device of 4.2-300K temperature area

A technology of fatigue performance testing and fatigue testing machine, which is applied in the direction of testing material strength by applying stable bending force and testing material strength by applying stable tension/pressure, which can solve the problems of fatigue performance data measurement and achieve simple structure , accurate temperature control and high efficiency

Inactive Publication Date: 2012-08-22
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the fatigue performance measurement equipment currently researched and developed can only measure the fatigue performance of materials or workpieces in room temperature or high temperature environments, and the defect is that it cannot measure fatigue performance data in low temperature environments

Method used

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  • Fatigue property test device of 4.2-300K temperature area
  • Fatigue property test device of 4.2-300K temperature area
  • Fatigue property test device of 4.2-300K temperature area

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Embodiment Construction

[0027] figure 1 It is a structural schematic diagram of the low temperature fatigue performance measuring device of the present invention. Such as figure 1 As shown, the low-temperature fatigue performance measurement device of the present invention mainly includes: electro-hydraulic servo fatigue testing machine 1, low-temperature mechanical support frame 2, low-temperature liquid infusion tube 3, low-temperature liquid container 4, sample or sample 5 to be tested, and a temperature controller 6. Low temperature vacuum Dewar 7, low temperature liquid evaporator 8, etc. Only a few main components are described in detail below. Systems or elements (such as vacuum systems, valves for controlling liquid flow) that are well known to those skilled in the art will not be further described in the present invention.

[0028] The electro-hydraulic servo fatigue testing machine 1 provides a mechanical power source (ie loading force) for the sample 5, and it also includes a mechanical...

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Abstract

The invention relates to a fatigue property test device of a 4.2-300K temperature area. The device comprises an electrolyte servo fatigue test machine (1), a mechanical support frame (2), a liquid conveying pipe (3), a liquid container (4), a temperature controller (6), a vacuum Dewar (7) and a liquid evaporator (8). The fatigue property test device provided by the invention not only can perform fatigue property data test at the lowest temperature 4.2K / -269 DEG C, but also can realize the fatigue property data test at any temperature point in the temperature range of 4.2-300K / (-269)-27 DEG C by use of low-temperature liquid (liquid nitrogen) and a low-temperature control system; and the device has the advantages of accurate temperature control, simple structure, high reliability, long working life and high efficiency.

Description

technical field [0001] The invention relates to a measuring device, in particular to a fatigue performance testing device suitable for a low temperature environment (4.2-300K). Background technique [0002] With the development of my country's hydrogen energy, nuclear fusion energy, aerospace, applied superconductivity, gas industry, and some large scientific projects, there are more and more projects involving cryogenic engineering. Therefore, the demand for low-temperature materials is increasing, and the performance data requirements for low-temperature materials are becoming more and more comprehensive. Materials work in a low temperature environment, and their low temperature physical properties are usually different from those at room temperature. Among them, fatigue mechanical properties are an important performance index of materials or workpieces in engineering. Under the long-term action of changing load and strain, the workpiece will generate alternating stress ...

Claims

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Application Information

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IPC IPC(8): G01N3/18G01N3/20
Inventor 黄荣进李来风徐冬
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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