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Creep-fatigue interaction test device and load loading and unloading method thereof

A technology of interaction and test equipment, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve the problems of reliability of test results, difficulty in measuring force value changes, etc., and achieve easy realization, stable force value, and control high precision effect

Active Publication Date: 2012-04-18
SHANGHAI POWER EQUIP RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the force value change of the electronic load sensor due to electronic interference and aging of electronic components is difficult to measure during the long-term test process, which may lead to reliability problems of the test results

Method used

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  • Creep-fatigue interaction test device and load loading and unloading method thereof
  • Creep-fatigue interaction test device and load loading and unloading method thereof
  • Creep-fatigue interaction test device and load loading and unloading method thereof

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Embodiment Construction

[0021] In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.

[0022] Such as figure 1 As shown, a kind of creep-fatigue interaction test device provided by the present invention includes a lever 1, one end of the lever 1 is connected with the sample 3 arranged in the high-temperature heating furnace 2 through a pull rod, and the other end is connected with the upper suspension rod 18, and the upper suspension rod 18 is connected with the lower boom 14 through the pin 20, the upper weight tray 16 and the lower weight tray 12 are respectively arranged on the upper boom 18 and the lower boom 14, and the upper weight 17 and the lower weight 13 are respectively arranged on the upper weight On the code tray 16 and the lower weight tray 12, the loading and unloading tray 11 is located below the lower weight tray 12, the loading and unloading tray 11 is located on the loading and unloading transmiss...

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Abstract

The invention provides a creep-fatigue interaction test device, which comprises a lever, wherein one end of the lever is connected with a sample arranged in a high-temperature heating furnace; the other end of the lever is connected with an upper suspender; the upper suspender is connected with a lower suspender; a loading and unloading tray is positioned under a lower weight tray; and the sample is connected with a leveling transmission mechanism through a tie rod. The creep-fatigue interaction test device is characterized in that: the end part, which is connected with the upper suspender, of the lever is connected with displacement sensor which is used for leveling; a programmable logic controller is connected with a variable frequency motor mechanism; and the leveling transmission mechanism and a loading and unloading transmission mechanism are respectively driven by the variable frequency motor mechanism. The invention adopts another technical scheme that: a method adopting the equipment is provided. The creep-fatigue interaction test device is relatively low in cost and easy to realize, and has the advantages of stable power value, reliable change and the like, of a lever type creep lasting tester. In addition, the displacement sensor is adopted to perform lever leveling control, so compared with the prior art in which photoelectric limit switch control technology is adopted, the creep-fatigue interaction test device is higher in control precision.

Description

technical field [0001] The invention relates to a creep-fatigue performance detection test device for metal materials and a method using the device, which is suitable for detecting the performance of materials under creep-fatigue interaction conditions and belongs to the technical field of high-temperature materials. Background technique [0002] Power generation equipment, petrochemical and aerospace high-temperature components are often subjected to cyclical forces at high temperatures, and their materials or structures are subjected to creep-fatigue interactions during operation. Creep damage and fatigue damage have different damage mechanisms, and the damage situation under the interaction of the two is very complicated. It is necessary to understand and master the behavior of materials under the interaction of creep and fatigue through experiments. At present, more creep-fatigue interaction test devices are used, including electronic fatigue testing machine and electro...

Claims

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Application Information

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IPC IPC(8): G01N3/34
Inventor 林富生孙康侍克献杨昌顺符锐马云海
Owner SHANGHAI POWER EQUIP RES INST
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