Description:

Vibration testing is a laboratory-based method for simulating the effects of various vibration environments that products, typically electrical and electronic products, may encounter during storage, transportation, installation, and use. It is used to assess whether a product can withstand different environmental vibrations and function properly without failure.

Products suffering external vibration may lead to two types of error. One is board level solder ball breaking due to fatigue by repeated vibration stress during transportation or field operation. The other is severe structure damage caused by resonance amplification triggered by vibration stress as a result of fixation method or structural design natural frequency.

Purpose: Vibration testing allows for the analysis and evaluation of product reliability before formal production, reducing the probability of defective products and ensuring compliance with design and functional requirements.

Failure Mode:

Scope of Application: 

Electrical and electronic products.

Vibration Testing Classification:

The most common types of vibration testing services conducted by vibration test labs are Sinusoidal and Random. Sinusoidal or Sine Vibration Testing is one of the more common types of vibration testing services performed by labs., aiming to simulate vibrations such as rotation, pulsation, and oscillation (occurring in ships, aircraft, vehicles, and spacecraft) as well as analyze the resonant frequency and verify the presence of resonant points in the product structure. The types of Sinusoidal Vibration Testing are Sine Sweep Vibration Testing and Sine Dwell Vibration Testing, depending on the frequency range, amplitude, and test duration. Random Vibration, on the other hand, aims to simulate the overall structural seismic strength of a product and the transportation environment in its packaged state. The severity of the test depends on the frequency range, GRMS, test duration, and axis.

1.Sinusoidal Vibration Testing: This test applies sinusoidal vibration to the test specimen, which can be either sine sweep or sine dwell vibration testing.

2.Random Vibration Testing: This test applies random vibration to the test specimen and can be classified into broadband random vibration testing and narrow-band random vibration testing based on the frequency bandwidth.

Image of Testing Equipment:

Vibration table parameters: maximum thrust, maximum acceleration, maximum velocity, maximum displacement, vibration table size and weight, table resonance frequency, vibration table frequency range.

Sample Parameters: sample dimensions, sample weight, test parameters.