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WHAT IS VIBRATION TEST?

Vibration testing is simulating the vibration environment by the shaker in the laboratory, introducing force function into the UUT to test the response of the UUT to a defined vibration environment. Vibration testing is performed to test the product's durability, integrity, fatigue life, and resonant frequencies.

As one of the most professional vibration shaker manufacturers in China, CME offers mechanical vibration shakers worldwide.

Hydraulic Vibration Testing Shaker

CME is a professional hydraulic shaker manufacturer since 2006.

HOW TO CHOOSE DIFFERENT TYPES OF VIBRATION SHAKERS?

01
There are three types of shaker systems

There are three types of shaker systems—electrodynamic (ED) shaker, servo-hydraulic (hydraulic) shaker, and mechanical shaker. The major specifications to consider are frequency range, displacement, acceleration, tested axes, payload and vibration/shock levels, and force rating. Since mechanical shaker can only test sine and was out of date, we discuss the other two types.

02
For relatively low

For relatively low-frequency vibration (typically less than 200 Hz), the servo-hydraulic shaker is adopted. An electrodynamic shaker is used for higher frequencies (typically 5 Hz to 2500 Hz). ED shaker's displacement is under 51mm (P-P), while hydraulic shaker can be up to 100mm (P-P). Moreover, if it’s a significant force test, the hydraulic shaker will be the cost-effective choice. 

How to choose different types of vibration shakers?

There are three types of mechanical vibration shaker systems—electrodynamic (ED) shaker, servo-hydraulic (hydraulic) shaker and mechanical shaker. The major specifications to consider are frequency range, displacement, acceleration, tested axes, payload and vibration/shock levels, and force rating. Since mechanical shaker can only test sine and was out of date, we discuss the other two types.


For relatively low-frequency vibration (typically less than 200 Hz), servo hydraulic shaker is adopted. Electrodynamic shaker is used for higher frequencies (typically 5 Hz to 2500 Hz). ED shaker’s displacement is under 51mm (P-P), while hydraulic shaker can be up to 100mm (P-P). Moreover, if it’s a significant force test, the hydraulic shaker will be the cost-effective choice.


HOW TO PERFORM A VIBRATION TEST IN LAB?

Vibration Shakers
Vibration Shakers

FAQS OF VIBRATION TEST SYSTEM

How many types of vibration testing waveforms?

  • Sine

  • Random

  • Resonant search & dwell

  • Sine on Random

  • Random on Random

  • Sine & Random on Random

  • SRS (Shock Response Spectrum) Analysis



What are the main parameters to determine a vibration test?

To select a suitable shaker to do a vibration test, we should know the following parameters: 

-UUT Size & Weight (including fixture)

-Frequency Range and Waveforms

-Displacement and Acceleration 

-Test Direction

-Target Vibration Test Profile

Can a vibration table do shock test?

Yes, if it's the low level (acceleration) and wide pulse duration shock test, e.g.: 4g@50ms, using a vibration shaker is the best choice. 

What's the lowest frequency hydraulic vibration shaker can achieve?

0.1Hz

How do I choose vibration test equipment according to ISTA procedure?

Vibration test using the 1-inch fixed displacement method, peak-to-peak, at a predetermined frequency for the ISTA 1A and 1B procedures.


The 1C, 1D, and 1E procedures require a vibration test using two alternative methods: fixed linear vertical displacement or random vibration.


Instead, for procedures 1G and 1H, the testing sequence requires a random vibration test.  For the 2A and 2B procedures, the testing sequence outlines two testing procedures: the fixed-displacement vibration test and the random vibration test. However, the ISTA 2C procedures require a random vibration test under dynamic load. The ISTA 3A procedure is composed of different types of tests depending on the package to be tested (standard, small, flat, or elongated) and its characteristics. In the case of vibration tests, the performance of a random vibration test with or without top load is required for all types of packages. Optionally, a random vibration test at low pressure may be performed.

The ISTA 3B procedure requires the performance of a random vibration test with the top load. However, protocols ISTA 3E and 3H also require the performance of a random vibration test, but without a top load in this case.

Project 3K requires a random vibration test. A random vibration test with or without top load. 

CME TECHNOLOGY WELCOMES YOUR ENQUIRY AND FEEDBACK AT ANY TIME!
sales@cmetechnology.com
029-38128695
No.3 Upgrade Demonstration Base, West of Yongchang Rd., High-tech Zone, Xianyang City, Shaanxi Province, 712023 China
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No.3 Upgrade Demonstration Base, West of Yongchang Rd., High-tech Zone, Xianyang City, Shaanxi Province, 712023 China
CME TECHNOLOGY WELCOMES YOUR ENQUIRY AND FEEDBACK AT ANY TIME!
Talk to Us
No.3 Upgrade Demonstration Base, West of Yongchang Rd., High-tech Zone, Xianyang City, Shaanxi Province, 712023 China
sales@cmetechnology.com 029-38128695
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