Vibration Resistance of Electrical Equipment

Vibration Resistance of Electrical Equipment

Shock and vibration resistance gives information concerning the robustness of the mechanical design of a device. The methods for evaluating the vibration resistance are defined in IEC 60068-2-6 and IEC 60068- 2-64. Electrical and electronic equipment are exposed to vibration in many applications and must withstand this without any degeneration, or even failure, in their function. Therefore, manufacturers of electrical and electronic devices put a great deal of effort into ensuring their instruments are prepared for such applications.

Random Vibration Testing

Random Vibration Testing

Random vibrations are the oscillations of mechanical systems excited by environments that vary randomly in time and, perhaps, space. Practically all real physical systems are subjected to random dynamic environments, and many systems will fail due to the effects of these exposures.

Sine Vibration Testing

Sine Vibration Testing

Sine Vibration Testing may be considered as the most basic vibration testing method used. This type of vibration testing requires less complex parameters compare to other type of vibration testing. Knowing the nature of sinusoidal signal, makes this type of vibration testing easier to understand and to get familiar with. Though, easier to understand does not make it less important compare to other type of vibration testing. Sine vibration testing may still be at the top rank when we are thinking of dynamic characteristic measurement.

Limitations of Existing Vibration Testing Systems

Limitations of Existing Vibration Testing Systems

The high force shaker (>70kN typically) vibration testing system is unable to handle larger test article and mass. The CG of such test articles cannot be easily controlled which can result in high overturning moment and causes great stress to the ball bearing assembly.

Running Test with Shock Test Machine

Running Test with Shock Test Machine

Running shock test by using Electrodynamic Shaker may be much more convenient for test engineer due to the close loop control process. Since test engineer can define the shock test profile easily and leave the vibration controller to handle the close loop process by itself.

MIL-STD-810 Standard - Various types of vibration tests

MIL-STD-810 Standard - Various types of vibration tests

ETS I Series Vibration Testing System with force rating from 4,000 to 16,000 kgf is ideal for screening of medium sized assemblies with extreme high acceleration test level and high frequency range. The Extreme Acceleration Shaker Y-Ring (EAS-Y Ring) armature is a revolutionary design which will allow for using a proportioned head expander to test multiple specimens simultaneously at extreme high acceleration level.