Test principle of transverse vibration testing machine for f

The test is carried out on the transverse vibration testing machine. Tighten the tested fasteners on the test device to produce a certain clamping force. With the help of the test machine in the two metal plates to be generated between the horizontal displacement, so that the connection is loose, resulting in reduced clamping force or even completely lost. The instantaneous value of the clamping force can be recorded continuously. According to the analysis and comparison of the recorded data, it can be used to judge the looseness of the fastener. In the test process, the slower the clamping force, the better the anti loosing performance. On the contrary, the faster the clamping force is, the worse the anti loosing performance is.

From the transverse vibration test method GB GB/T10431-2008 fasteners can be seen in the "transverse displacement" alternating between the two metal plate is clamped, in the DIN65151 standard, but also a clear "Transverse viberation", (vibration). Therefore, it can be seen, whether it is the Chinese national standard or Din standard, are stressed that the transverse vibration".

In the standard, we can see that the fasteners produce axial force, and with the help of the test machine to produce alternating transverse displacement in be clamped between two metal plates, the loose connection leads to reduced or even complete loss of clamping force.

It can be seen that the clamping force is generated in the axial direction of the fastener, so as long as the vibration test is carried out in the transverse direction, the anti loosing test can be carried out. It is not to say that the only way to produce transverse vibration in horizontal direction is transverse vibration. For example, when the fasteners are installed horizontally, the transverse vibration in the direction perpendicular to the direction of the transverse vibration can only be produced.

Therefore, the correct point of view should be: as long as the lateral vibration, whether it is horizontal or vertical direction is correct. The so-called horizontal lateral vibration is the real transverse vibration of the fastener, this argument is unfounded, simply can not be established, but also a misleading user.