It has long been a known fact that excessive vibration damages materials. In this respect, various test methods are applied in advanced laboratories to determine at what level vibrations cause damage to the products exposed to these vibrations.
Direct vibration environment simulation test method, accelerated test method using cyclic fatigue law, accelerated test method using fatigue damage spectrum and accelerated test method using Kurtosis control are some of them.
Some materials begin to wear and tear after a period of time as a result of vibration-induced stress. Although it is preferable to test materials in real time, in most cases, real-time testing is not possible due to cost and time constraints. Therefore, simulation methods are designed for the tests. In these tests, an environment equivalent to the service life environment is created in the laboratory environment.
Some standards for accelerated vibration tests have been published and applied in the railway and automobile sectors. Various vibration fatigue curves of certain materials, structural components and products have been developed and standards are designed based on these curves.
For example, ASTM (American Material Testing Association) ASTM E 1049-85 is one of the standard applications standard for cycle counting in fatigue analysis.
Today, vibration and shock tests and vibration life tests are performed in advanced laboratories for automotive parts, electronic equipment, household appliances and small and medium-sized structures.
The following are a few standards that are based on vibration and shock tests performed by the competent authorities:
TS EN 60068-2-6 Environmental resistance tests - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
TS EN 60068-2-57 ... Experiment Ff: Vibration, time history and sine-beat method
TS EN 60068-2-64 ... Experiment Fh: Vibration, broadband random and guide
TS EN 60068-2-53 ... Combined climate (temperature / humidity) and dynamic (vibration / shock) tests
The application is received, the contract and then the product, vehicle and vehicles for which, what kind of service is determined exactly.
The necessary laboratory environment is prepared and the products, tools and instruments requested by the organization are tested by experts with the reference of the existing standards and measurements are made.
The data obtained as a result of meticulously completed tests, measurements and analyzes are evaluated and accredited approved reports are submitted by expert engineers.
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