How to Select the Right Vibration Test System: Guide with Practical Applications

How to Select the Right Vibration Test System: Guide with Practical Applications

The model and specification of a vibration test system directly determine its performance and whether it can meet your testing requirements. Not all test conditions can be satisfied by a single system. You must clarify the parameters below and calculate the required exciting force before making a final selection.

※ Vibration test types:

• SINE
• RANDOM

1. SINE Test:                                 
2. Name of the product to be tested:                                
3. Weight of the product to be tested (KG):                                
4. Dimensions of the product to be tested (LxWxH):                                

※ Vibration axis of the vibration test machine:

• Vertical (If the object to be measured can be turned over, it is not necessary to purchase a horizontal slide table
• Vertical + Horizontal

※ Required vibration function:

• Fixed frequency
• Sweep
• Typical shock
• Resonance Search
• Resonance dwell

7. Sweep frequency range (Hz):
8. Displacement (amplitude) (mmP-P):
9. Acceleration (G) value (m/s2):

※ Temperature humidity conditions:

1. Required temperature range (℃):
2. Required temperature change rate: (℃/min):
3. Temperature change mode:

• Average
• Linear

4. Required humidity range (RH) :
5. Does your product will generate heating during test:

• Yes, if yes, what’s the max. heating will be generated:
• No

How Electrodynamic Vibration Test Systems Work

How to Calculate Required Exciting Force

The most important step in selection is calculating the correct exciting force using this formula:

F = (M0 + M1 + M2) × A × 1.3

Key Test Conditions for System Selection

To choose a suitable vibration test system, the most important thing is to know the exciting force required to perform the vibration test. To evaluate and calculate the exciting force, the following specifications should be known:

• Clear Testing Requirements
• Frequency (Frequency Range)
• Maximum Acceleration
• Maximum Displacement
• Maximum Velocity
• Specimen Mass and Fixation

Then specimen fixture is selected based on the upper limit of test frequency and specimen size, either vertical expansion platform or horizontal slip table. Specimen mass is needed to evaluate the required exciting force for vibration tests.

Evaluation Of Armature Mass

When evaluating the exciting force needed for vibration test, you can choose a temporary armature mass (according to the models of vibration test systems).

Calculation Example:

      1.Test Requirements & Parameters

• Specimen Weight: 30 kg
• Specimen dimensions: 500mm*500mm (L*W)
• Fixture/Expanders: 600 mm Square Vertical Shaker Table (38 kg)
• Armature Weight (Moving Coil): 6 kg
• Total Moving Mass (M): 30 + 38 + 6 = 74 kg
• Required Acceleration (A): 5 g

      2.Force Calculation (Newton’s Second Law)

The theoretical force required is calculated as:

F = M x A = 74 kg * 5 g = 370 kgf

      3.Safety Margin & System Evaluation

• Standard Calculation (30% Margin):
• 370 kgf x 1.3 = 481 kgf
• Proposed Solution: SN553-EV206H60VT60 vibration test system (Rated Sine Force: 600 kgf)

Model Naming Rules

Take SN553-EV206H60VT60 as an example:

Practical Applications of Vibration Test Systems

Vibration testing is widely used across industries to verify product reliability, durability, and structural stability.

1. Automotive Industry

• Test car body, chassis, seats, infotainment systems, and electronic components
• Simulate road vibration, engine vibration, and transportation shock
• Ensure parts meet OEM reliability standards

2. Electronics & Home Appliances

• Mobile phones, tablets, laptops, and printed circuit boards (PCBs)
• TVs, audio equipment, refrigerators, and washing machines
• Detect loose connections, solder fatigue, and structural weakness

3. Aerospace & Aviation

• Satellite components, antennas, and battery modules
• Avionics, sensors, and control units
• Simulate launch vibration, flight vibration, and impact loads

4. New Energy & Batteries

• Power batteries, battery packs, BMS systems
• Vibration and shock testing for electric vehicles and energy storage systems
• Ensure safety and stability under extreme conditions

5. Military & Defense Equipment

• Communication devices, radars, and control instruments
• Equipment for vehicles, ships, and aircraft
• Validate stability in harsh vibration environments

Useful Tip for Longer Service Life

To extend the lifespan of your vibration test system:

• Avoid continuous full load operation.
• We recommend running at 70% of maximum thrust for daily use.

Conclusion

Always calculate exciting force first, then match displacement, frequency range, cooling type, and application scenario. This ensures you select a high performance, cost effective, and long lasting vibration test system.

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