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Common issues with vibration testing
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Automotive interior and exterior trim - Environmental testing
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Automotive electronic and electrical components - Electrical performance
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Automotive interior and exterior trims - Mechanical performance testing
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Address: Shenzhen City, Baoan District, Shajing Street, Nga side of the school of Wei Juji Industrial Park, Building A 1 ~ 2 floor, Building C 3 floor
(Random) Sinusoidal Triple Comprehensive Test
The purpose of conducting a comprehensive climate and dynamics test on equipment or components is to investigate the extent to which the equipment or components are affected by the comprehensive climate and dynamics test, and is suitable for checking other physical changes in electricity, machinery, and other aspects.
Random (sine) triple comprehensive testing is a comprehensive testing method that combines climate environment (such as temperature and humidity) and dynamic environment (such as vibration and shock) to evaluate the performance and reliability of equipment or components in complex environments. This test can simulate the multiple environmental stresses that the device may encounter in actual use, thereby exposing potential design defects and performance issues. The following are the key elements and steps of the random (sine) triple synthesis test:
1. Test objectives
Environmental adaptability: Evaluate the performance of equipment in a comprehensive climate and dynamic environment.
Reliability: Check whether the equipment functions properly in complex environments.
Failure analysis: Expose potential failure modes of equipment under multiple stresses.
2. Testing conditions
Climate environment:
Temperature range: determined according to the device application scenario (such as -40 ° C to+85 ° C).
Humidity range: typically 5% to 95% relative humidity.
Dynamic environment:
Vibration: Random or sinusoidal vibration, typically ranging in frequency from 5Hz to 2000Hz.
Shock: Half sine wave, trapezoidal wave or back peak sawtooth wave, acceleration and duration determined according to standards.
Integrated stress: Simultaneously or alternately applying climate and dynamic environmental stress.
Testing time: determined based on device type and application scenario (e.g. 24 hours, 48 hours).
3. Testing equipment
Three comprehensive test chamber: capable of simultaneously controlling temperature, humidity, and vibration.
Vibration table: Provides random or sinusoidal vibration.
Impact table: Provides impact testing.
Data acquisition system: records temperature, humidity, vibration, impact and other data.
Monitoring equipment: Real time monitoring of the functional status of the equipment.
4. Testing steps
prepare
Determine test parameters (temperature, humidity, vibration frequency, impact waveform, etc.).
Check the appearance and function of the equipment, and record the initial state.
Installation equipment:
Fix the equipment on the vibration table to ensure good contact with the test chamber.
Apply climate stress:
Start the test chamber and apply temperature and humidity stress according to the set parameters.
Apply dynamic stress:
Start the vibration table or impact table and apply vibration or impact according to the set parameters.
Comprehensive testing:
Simultaneously or alternately apply climate and dynamic stresses to simulate actual usage environments.
Monitoring and recording:
Real time monitoring of equipment's functional status and recording of test data.
Inspection and analysis:
After the test is completed, check the appearance and functionality of the equipment, and analyze the test data.
Judgment:
Confirm whether the equipment meets the requirements of environmental adaptability and reliability.
5. Judgment criteria
Appearance inspection: There is no obvious damage (such as cracks or deformation) on the appearance of the equipment.
Function check: The device is functioning properly and there is no performance degradation or failure.
Structural inspection: There is no looseness, detachment, or damage to the internal components.
6. Improvement measures
Material optimization: Choose materials with higher strength or better weather resistance.
Structural design: Add reinforcement bars, buffer zones, or shock-absorbing design.
Internal fixation: Ensure that internal components (such as circuit boards, batteries) are securely fixed.
Protective design: Adopting modular design to reduce the impact of environmental stress on internal components.
7. Common standards
IEC 60068-2: Environmental Testing Series Standards.
MIL-STD-810G: Environmental Testing Standard for Military Equipment.
GB/T 2423: Environmental Testing Standards for Electronic Equipment in China.
ASTM D3332: Environmental Testing Standard for Packaging Materials.
8. Precautions
Testing safety: Ensure that there are no personnel in the testing area to avoid accidental injuries.
Environmental control: precise control of temperature, humidity, and dynamic stress to ensure testing consistency.
Multiple tests: Ensure that the device can still function properly after multiple tests.
User scenario: Simulate complex environmental conditions in actual use.
By conducting random (sine) three factor comprehensive testing, the performance and reliability of the equipment can be comprehensively evaluated in a climate and dynamic integrated environment, exposing potential design defects and performance issues, providing a basis for design improvement and quality control, ensuring that the equipment can adapt to complex environments and maintain normal operation in practical use.
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