Vibration Testing for Safety

Vibration Testing for Safety

Vibration Testing for Safety

All machines have to endure a certain amount of vibration during their lifecycle, right from the manufacturing stages to assembly, transportation and operation. In order to ensure their safety and durability, a test aimed at finding out whether the product can withstand all possible pounding in its environs and experiences is required. Vibration testing is the most commonly adopted technique for this process. It is often used to discover the weaknesses in product design as well. Using different vibration equipment, tests are conducted on several kinds of apparatus ranging from aircraft to heavy machinery, vehicles and household appliances.

Vehicles are an excellent example of a product which requires this kind of testing. A few of the major kinds of vibrations vehicles are exposed to are those during assembly of components, self-operational engine tremors and environmental conditions, like bumpy roads. Hence, it is evident that most of the vibrations that come up in field service or transportation are random and not harmonic or sinusoidal. Yet, qualified vibration testers have satisfactorily pointed out different vibration modes and important frequencies along with other information required for protection against the consequences of unnecessary pulsation.

To test vehicles, each component or car part is individually exposed to the vibration equipment. To simulate real-world situations, these tests are combined with some environmental tests. Conducting a vibration test in the testing field or in the laboratory makes use of a range of equipment such as climatic chambers, data analyzers, vibration exciters, controllers, and other instruments. One of the frequently used methods of testing is the low-frequency vibration test wherein hydraulic force or exciters are used as vibration equipment. Vibration testers also use accelerometers and such other devices here for measurement and force conversion.

Vehicle manufacturers and their suppliers find themselves under extreme pressure to improve the safety of their products. With high usage expected, the individual components and assembled vehicles are required to pass literally hundreds of safety tests, including vibration trials. Commercial vehicles are not allowed on the road without the certificate of completion from this battery of tests. This extensive testing, allows the manufacturers to develop the safest and most dependable products without compromising on comfort and ease of use. Vibration testers also carry out tests for vehicles manufactured for military purposes. However, the spectrum of these tests is wider and its rigor is compounded due to their intended function and possible severity of the environment.

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