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Wednesday, January 19, 2011

Vibration Testing

One of the tests that is important to ensure the stability and strength of a certain structure or a design is vibration testing. This is a good indicator to know that the design can withstand for a long time under the intended environment. It would always be a wise practice to submit a product for vibration analysis which can largely save up costs by setting an improved reliability of your product. It simply reduces some return costs because it lessens the probability of any failure while the product is used in actual work. It would be very critical since a lot of stresses will be exerted on your product.

The reliability of the materials used can be examined through the vibration test. This could be costly to perform the laboratory experiments but it would be worth the effort. Some of the methods commonly used are as follows:

Random vibration is done through a replication of multiple frequencies for a certain bandwidth. The surrounding environment can be derived from a variety of sources. This will depend on how the vibration analysis is to be accomplished. One common example of this kind of vibration testing illustrates the running of a set of wheels over a finished road or highway. This has to be administered accurately to get the optimum result of the analysis. In many of the random vibration testing, the Gaussian random suppositions are used for it generates the optimum amplitude at levels measured according to RMS values.

Another mode of performing the vibration testing is through sinusoidal vibration. This will make use of the connection between velocity, displacement, and acceleration while set on a fixed value. Only the frequency can be held as a dependent variable. People say that sinusoidal vibration is one of the simplest forms of test because it can easily be understood. The Sine Sweep Vibration refers to the sweeps which are laid on a frequency spectrum under a certain rate. This is used to determine the resonant frequencies produced by a product under examination. For a Sine Dwell vibration, dwell can be under a specific frequency for getting the duplication of a unit tested under a worst case scenario.

Another method is the Combined Environment Vibration which is performed by exposing the product to certain vibrations and at the same time to environmental factors in a simultaneous manner. The temperature of the environment can also be manipulated to attain certain degrees. This will create a good analysis on the reliability of the unit under the test. Some companies do provide prefabricated enclosures which can provide the desired amount of temperature. You can choose the maximum working area and the temperature range. It would crucial for the product to sustain extremely hot or extremely cold environment. These are the major factors to be considered while undergoing the testing.

Vibration testing is really a must if you want to make sure your product will not be rejected in the market. Many people these days check for the reliability of every product that is marketed for them.

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