Air cooling device for high-frequency fatigue testing machine and method for controlling air cooling airflow
A technology of fatigue testing machine and air-cooling device, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of not reflecting the anti-fatigue performance of materials, local overheating of test pieces, creep, etc., and achieves low price and simple processing and manufacturing , Easy to install and use
Active Publication Date: 2014-07-16
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
However, if the material under test has high damping, or the test load is close to the yield strength of the material, it will cause local overheating of the test piece (usually at the smallest cross-section) and even creep due to the high loading frequency in the test. Force the test to be unable to be carried out under the expected load, and the obtained test data cannot reflect the real fatigue resistance of the material
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[0016] The present invention is described in detail below in conjunction with accompanying drawing:
[0017] Such as figure 1 As shown; the present invention provides an air cooling device for a high frequency fatigue testing machine, the device is provided with a clamping unit 101 and an airflow control unit 102, and the clamping unit 101 is used to fix the air cooling device on the main column 104 of the testing machine Above; use the airflow control unit 102 to adjust the distribution state of the air-cooled airflow.
[0018] figure 2 It is a schematic diagram of the clamping unit of the present invention, and the clamping unit 101 is composed of a column clamping ring 101a and a connecting arm 101b. The column clamping ring 101a fixes the device on the main column 104 of the high-frequency fatigue testing machine by means of bolt fastening, and the movement of the device in the z-axis direction can be realized by using the main column 104 to lift or adjust the fixed pos...
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The invention discloses an air cooling device for a high-frequency fatigue testing machine. The air cooling device is characterized by comprises a clamping unit and an airflow control unit, wherein the clamping unit is used for fixing the air cooling device on a main vertical column of the testing machine; and the airflow control unit is used for adjusting the distribution state of air cooling airflow. By the device, a test piece can be cooled in the high-frequency fatigue testing process, and an extremely easy, convenient and practical function is provided for the conventional high-frequency fatigue testing machine. Due to the adoption of the air cooling device provided by the invention, a test piece required to be cooled can be subjected to air cooling treatment in the high-frequency fatigue testing process, and the air cooling treatment process has an extremely practical function for a high-frequency fatigue test; and the device can be extremely conveniently arranged on the conventional high-frequency fatigue testing machine, and has the outstanding advantages that the device is easy to machine, low in cost, and the like.
Description
technical field [0001] The invention relates to an air-cooling device, in particular to an air-cooling device for a high-frequency fatigue testing machine, which provides a very practical additional function for the existing high-frequency fatigue testing machine. Background technique [0002] More than 80% of engineering structure failure is caused by fatigue. In order to make the designed engineering structure and its components meet the requirements of fatigue strength and life on site, it is necessary to carry out fatigue tests first to master the fatigue resistance of related materials, such as fatigue S-N curve, fatigue limit, etc. The high-frequency fatigue testing machine is such a machine used to test the fatigue resistance of materials. Compared with the electro-hydraulic servo fatigue testing machine, it has the characteristics of high loading frequency and short test period, and is widely used in metallurgy, aerospace, transportation and other research fields in...
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IPC IPC(8): G01N3/02
Inventor 杨冰赵永翔郑朝阳刘浩炳
Owner SOUTHWEST JIAOTONG UNIV