Views: 2 Author: Site Editor Publish Time: 2021-10-09 Origin: Site
What is vibration test for?
Vibration test is to simulate the various vibration environmental impacts encountered by the product in the transportation, installation and use environment. This test is to simulate the various vibration environmental impacts encountered by the product in the transportation, installation and use environment to determine the product Whether it can withstand various environmental vibrations. Vibration test is to evaluate the resistance of components, parts and the whole machine in the expected transportation and use environment.
What is electrodynamic shaker?
The electric vibration table is generally combined with a power amplifier, a vibration controller, a PC vibration control system, a sensor, and some connecting cables to form a vibration control system for product vibration tests and other test tests.The electric vibration table is mainly used to simulate the vibration and influence of electrical and electronic products in the process of transportation, storage, and use in the test room, and to assess its adaptability.
Why do vibration tests?
Vibration test can analyze and evaluate the reliability of the product before the product officially leaves the factory, reduce the probability of defective products in the later stage, and determine the requirements and standards of product design and function.
Vibration test classification: Reliability vibration test is generally divided into 2 types, sinusoidal vibration test and random vibration test. Sinusoidal vibration is a test method often used in laboratories to simulate vibrations generated by rotation, pulsation, shock (appearing on ships, airplanes, vehicles, and space vehicles), as well as product structure resonance frequency analysis and resonance point stay verification Mainly, it is divided into swept frequency vibration and fixed frequency vibration. Its severity depends on the frequency range, amplitude value, and test duration. Random vibration is used to simulate the overall structure of the product to evaluate the seismic strength and the shipping environment in the packaged state. Its severity depends on the frequency range, GRMS, test duration and axial direction.
1. Sinusoidal vibration test: This test applies sinusoidal vibration to the test piece, which can be a sine fixed frequency or a sine sweep frequency vibration test.
2. Random vibration test: This test applies random vibration to the test piece, which is divided into broadband random vibration test and narrowband random vibration test according to the frequency width of random vibration.
Sinusoidal vibration: GB/T 2423.10 IEC 60068-2-6 EN 60068-2-6 ISO 8318 GB/T 4857.10 ISO 2247 GB/T 4857.7
Random vibration: GB/T 2423.56 IEC 60068-2-64