IEC 60068-2-64 Test

IEC 60068-2-64 Vibration Test

The IEC 60068-2-64 package test standard addresses structural integrity. The scope of this transit test standard indicates the capability of the equipment to resist dynamic loads under random vibration. In units meeting the test requirement, the function or structural integrity is unacceptable or does not deteriorate.

Broadband random vibration can be used to identify a range of topics. These problems include accumulated stress effects and the resulting mechanical weakness. Another problem could be a drop in the unit's specified performance.

IEC 60068-2-64 pass testis valid for samples that may be exposed to stochastic vibration. This vibration can be caused by transportation or working environments. For example in planes, spacecraft and land vehicles.

The methods and techniques in this standard are based on digital control of random vibration. Allows entering variations to suit individual cases, if prescribed by the relevant specification. Compared to most other tests, this test is based on statistical techniques, not deterministic. Therefore, the broadband random vibration test is explained in terms of probability and statistical averages.

It is emphasized that random tests always require certain engineering judgment, and that both the supplier and the purchaser should be fully aware of this fact. The author of the specification is expected to select the test procedure and the severity values ​​appropriate for the sample and its use. The test method is based primarily on the use of an electrodynamic or a servo-hydraulic vibration generator with an associated computer-based control system used as a vibration test system.

This conformity test standard is primarily designed for unpackaged samples. The latter is also designed for items in the shipping container, when it can be considered as part of itself, for example. However, if the product is packaged, the product itself is called a product. In this case, the product and its packaging are called a test sample together.

Some examples may be subject to vibration of a combination of random and other forces. These may result from transportation or real-life settings. Examples include aircraft, spacecraft, and goods in shipping containers. In these cases, pure random testing may not be sufficient.

The IEC 60068-2-64 compliance test follows a particular test sequence. This series is as follows:

• First vibration response survey
• Low level excitation for synchronization before proceeding to full level test in continuous mode
• Random vibration test
• Final vibration response survey if prescribed.

The test substance must be activated on each of the preferred test axes. The testing order along these axes is not important, unless specified in the relevant specification. If the sample is sensitive to gravity, for example a mercury tilt switch, vibration can only be applied in the normal service position and must be determined by the relevant specification.