Device suitable for high-low temperature radioactive plate-shaped fatigue test
A fatigue test and radiation technology, applied in the direction of measuring devices, using stable tension/pressure to test material strength, strength characteristics, etc., can solve the problems of large volume, increased volume, and difficulty in temperature control of hydraulic clamps, and achieve benefits Atmosphere protection control, easy operation, and the effect of reducing the volume of the high-temperature furnace
Active Publication Date: 2021-12-31
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology
[0002] When carrying out plate fatigue experiments, especially tension and compression fatigue with zero load, it is necessary to fix the sample and the fixture firmly. For radioactive samples, hydraulic fixtures are generally used to clamp the sample, which is convenient for operation, but usually hydraulic clamps The specific volume is large. When performing high and low temperature tests, the hydraulic fixture cannot withstand high and low temperatures and is placed in a high and low temperature furnace. Even if it can withstand high and low temperatures, it needs to be equipped with a water constant temperature device, and the volume of the high and low temperature furnace needs to be increased accordingly. This brings great difficulty to temperature control, especially when high temperature requires atmosphere protection, it is more difficult, so it is necessary to develop a fatigue test sample and fixture suitable for high and low temperature environments
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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0020] The invention provides a device suitable for high and low temperature radiation plate fatigue test, which comprises a plate fatigue sample and a chuck. In this embodiment, the structure of the plate-shaped fatigue sample is as follows image 3 As shown, the upper and lower ends of the sample have a symmetrical structure, and both can be used as hanging ends. Both ends of the plate-shaped fatigue sample 1 are provided with comb-shaped structures 11, and the comb-shaped structures are arranged symmetrically on both sides of the end of the plate-shaped fatigue sample for connection with the ch...
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The invention relates to a device suitable for a high-low temperature radioactive plate-shaped fatigue test, which comprises a plate-shaped fatigue test sample, a chuck is arranged at the suspension end of the plate-shaped fatigue test sample, one end of the chuck is clamped on the plate-shaped fatigue test sample, and the other end of the chuck can extend out of a temperature control furnace to be connected with a hydraulic clamp. The chuck comprises an upper chuck and a lower chuck, the lower chuck is clamped at the lower part of the hanging end of the plate-shaped fatigue specimen, and the upper chuck is clamped at the upper part of the hanging end of the plate-shaped fatigue specimen and is connected with the comb-tooth-shaped structures at the two sides of the hanging end of the plate-shaped fatigue specimen through clamping grooves. According to the invention, the clamp is small in size and can tolerate high and low temperature environments, the size of a high-temperature furnace can be effectively reduced, atmosphere protection control during a high-temperature test is facilitated, and a zero-crossing gap in a tension and compression fatigue test can be effectively removed.
Description
technical field [0001] The invention relates to a fatigue test device, in particular to a device suitable for high and low temperature radiation plate fatigue tests. Background technique [0002] When carrying out plate fatigue experiments, especially tension and compression fatigue with zero load, it is necessary to fix the sample and the fixture firmly. For radioactive samples, hydraulic fixtures are generally used to clamp the sample, which is convenient for operation, but usually hydraulic clamps The specific volume is large. When performing high and low temperature tests, the hydraulic fixture cannot withstand high and low temperatures and is placed in a high and low temperature furnace. Even if it can withstand high and low temperatures, it needs to be equipped with a water constant temperature device, and the volume of the high and low temperature furnace needs to be increased accordingly. This brings great difficulty to temperature control, especially when high tempe...
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Login to View More IPC IPC(8): G01N3/18G01N3/02
CPCG01N3/18G01N3/02G01N2203/0003G01N2203/0016G01N2203/0073G01N2203/0226G01N2203/0228G01N2203/0282Y02E30/30
Inventor 王成龙宁广胜张长义郑全杨文
Owner CHINA INSTITUTE OF ATOMIC ENERGY