Project Introduction
Vibration testing simulates the effects of various vibration environments that products (typically electrical and electronic products) may encounter during storage, transportation, installation, and use in a laboratory setting. It is used to evaluate the product's ability to withstand different environmental vibrations and to operate normally without failure.
Purpose of the Test
Vibration testing can analyze and assess a product's reliability before it is officially released, reducing the likelihood of defective products later on, and also determines the required standards for product design and functionality.
Application Scope
There is a high demand for vibration testing of electrical and electronic products, as most electronic devices are precision items, such as smartphones and tablets. Their internal structures and components are intricate, and the vibration environment has a significant impact on them. It is crucial to ensure that vibration factors do not compromise the reliability of the products.
Vibration Test Classification
Reliability vibration tests are generally categorized into two types: sine vibration tests and random vibration tests. Sine vibration is a commonly used testing method in laboratories, primarily to simulate vibrations caused by rotation, pulsation, and oscillation (as seen in ships, aircraft, vehicles, and spacecraft) and to analyze the resonance frequencies and verify resonance points of product structures. It is further divided into sweep frequency vibration and fixed frequency vibration, with the rigor depending on the frequency range, amplitude values, and duration of the test. Random vibration, on the other hand, is used to assess the overall structural vibration resistance of products and the transport environment in packaging, with the rigor depending on the frequency range, GRMS, duration of the test, and axial direction.
1. Sine Vibration Test: This test applies sine vibration to the specimen, which can be either a sine fixed-frequency or sine sweep vibration test.
2. Random Vibration Testing: This test applies random vibrations to the specimen, which is categorized into two types based on the frequency bandwidth: broadband random vibration testing and narrowband random vibration testing.
Method Standards
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
Test Parameters
Vibration Table Parameters: Thrust, acceleration, speed, displacement, table size and weight, resonance frequency of the table surface, frequency range of the vibration table.
Sample Specifications: Sample Dimensions, Sample Weight, Test Parameters.
