Vibration and Shock Test

During a vibration and shock test, controlled vibrations with different frequencies and amplitudes are applied to the object to be tested, e.g. by vibration platforms, shock tables or electrodynamic shakers. This generates sinusoidal and random vibrations. The shock test involves short, impulse-like impacts on the product. This simulates loads that can occur during product use, such as the object falling, vibrations during transportation or sudden impacts.

The process of such a test begins with the precise fixation of the test sample on a vibrating table, whereby the future installation situation is simulated as accurately as possible. The test direction is defined to direct the vibrations to the relevant fixation points. Control sensors are placed at strategic positions to record the effects of the vibrations. If required, additional monitoring sensors are attached to take measurements during the test.

Various shock and vibration scenarios are performed during the test. The resonance dwell is analyzed to ensure that the product is not sensitive to certain frequencies. The correct installation position of the sample and the fixations are also checked.

Vibration testing and shock testing are particularly used in:

• Aerospace Engineering
• General mechanical engineering
• Railway technology
• Electrical engineering
• Medical technology:
• safety-critical systems

Next to Admission exams for markets or standards they also become Field Problem Failure Analysis as well as for the Validation of quality claims used.