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Comprehensive vibration test of outer circumference three
Automotive metal material testing
Performance testing of automotive lighting fixtures
Rapid temperature change test
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Common issues with vibration testing
Common issues with fatigue testing
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Voltage flicker test - Suzhou LCS standard
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Introduction to PFAS Testing
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Children's toy testing
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Chemical Testing
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Battery Testing
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North American Certification
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Africa Certification
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Battery Testing
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Children's toy testing
China Certification
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North American Certification
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Africa Certification
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Solutions
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Automotive interior and exterior trim - Environmental testing
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Automotive interior and exterior decorations (electronic and electrical components) - IP protection
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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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400-116-2629
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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
Ultraviolet (UV)
This test is to check the degree to which equipment or components are affected by solar radiation. The method of comprehensive testing can detect changes in electrical/mechanical or other physical properties.
UV aging test
Test purpose
Evaluate the resistance of equipment or components to solar ultraviolet (UV) radiation, and detect changes in electrical, mechanical, or other physical properties of materials under UV irradiation.
Test Standard
According to the standard:
ISO 4892-3: Plastic laboratory light source exposure method (UV fluorescent lamp)
ASTM G154: Non metallic Material UV Fluorescent Lamp Exposure Test
SAE J2020: UV Aging Test for Automotive Materials
Test Principle
By simulating solar ultraviolet radiation, the aging process of materials is accelerated, and the performance changes of materials under UV irradiation are evaluated, including color, gloss, mechanical strength, electrical properties, etc.
test equipment
UV aging test chamber
UV fluorescent lamp (UVA-340 or UVB-313)
Temperature and humidity control system
Irradiance meter
Sample holder
Assessment tools (colorimeter, gloss meter, microscope, electrical performance tester, etc.)
Test steps
Sample preparation:
Clean the surface of the sample to ensure that there are no oil stains or other contaminants.
Record the initial state of the sample (photography, color difference measurement, glossiness measurement, electrical performance testing, etc.).
Fix the sample inside the test chamber, ensuring that the exposed surface faces the light source.
Test condition settings:
Light source type:
UVA-340: Simulate solar ultraviolet radiation (295-365 nm).
UVB-313: Stronger ultraviolet rays used to accelerate aging.
Irradiance: typically 0.35-1.20 W/m ² @ 340 nm (according to standards or requirements).
Temperature inside the box: Set according to demand (usually 40-70 ℃).
Blackboard temperature: Set according to requirements (usually 50-90 ℃).
Relative humidity: Set according to demand (usually 10-75%).
Testing cycle: Depending on the requirements, it usually ranges from several hundred hours to several thousand hours.
Test Run:
Start the test chamber and maintain the set conditions.
Regularly check irradiance, temperature, and humidity to ensure stable testing conditions.
Record environmental data during the testing process.
Test completed:
Take out the sample and restore it to a standard environment for 24 hours.
Record the status of the sample after testing (taking photos, measuring color difference, measuring glossiness, conducting electrical performance tests, etc.).
Result evaluation:
Appearance changes:
Check whether the sample has discoloration, powdering, cracks, bubbles, and other phenomena.
Measure the color change (Δ E value) using a colorimeter.
Glossiness variation:
Measure surface glossiness changes using a glossiness meter.
Mechanical performance changes:
Evaluate the changes in properties such as tensile strength and impact strength of materials.
Changes in electrical performance:
Test the changes in electrical properties such as insulation resistance and dielectric strength of the material.
Microstructure analysis:
Observe surface microstructural changes using a microscope.
Precautions
Regularly calibrate UV lamps and irradiance meters to ensure light source stability.
Ensure uniform exposure of the sample and avoid local overheating or insufficient lighting.
After the test is completed, the sample needs to be restored to a standard environment before evaluation.
Test Record
Record the testing conditions (light source type, irradiance, temperature, humidity, testing period, etc.).
Record the initial and post test states of the sample (photography, color difference measurement, glossiness measurement, electrical performance testing, etc.).
Record the specific manifestations of material performance changes.
Conclusion
Based on the test results, evaluate the performance changes of the material in UV aging environment and issue a test report. This test can provide important basis for material selection, product design, and improvement.
Large-scale experimental base
Professional Lab
Analysis Method
Testing/year
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