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Reliability testing

日期: 2020-06-02

In view of the increasingly fierce competition today, product function and appearance are no longer the focus of competition between branded enterprises, whilst product quality and reliability are more and more valued by markets and customers. Using a variety of environmental testingequipments which simulate climatic environments of high temperature, low temperature, different humidities and short temperature changes, to accelerate the popping ot potential failures in actual use environments, we can verify that the product has reached the expected quality targets being set in the process of R&D stage. This is to evaluate the product as a whole to determine product reliability life.


Xenon lamp aging test


Sunlight is a major factor in the degradation of many organic materials, including plastics, textiles, paints etc. Xenon lamp aging testing applies xenon lamps to simulate damages caused by full spectrum sunlight and spray to simulate the effect of rain, dew, insolation and darkness. The test simulate material changes when exposed to sunlight in different environments.


Test standards

ISO 4892.2 ; GB/T 16422.2 ; ASTM G 155 ; ASTM D 4459

ISO 4892.2; GB/T 16422.2; ASTM G 155; ASTM D 4459



Ultraviolet aging testing


Ultraviolet aging testing equipment does not simulate the full spectrum of sunlight, but does simulate the damaging effects of sunlight. This is achieved by controlling the main radiation of fluorescent lamps in the ultraviolet segment of the solar spectrum. The test equipment adopts ultraviolet fluorescent lamps to simulate sunlight and condensation or spraying to simulate effects of moisture. This test is used to evaluate changes of colors, gloss, cracks, bubbling, catalysis, oxidation etc. 


Test standards

ISO 4892.3 ; GB/T 16422.3 ; ASTM G 154 ; ASTM D 4674

ISO 4892.3; GB/T 16422.3; ASTM G 154; ASTM D 4674

Salt spray test


Salt spray corrosion is one of the most common and destructive atmospheric corrosion. Salt spray test is mainly used to test resistance to corrosion of products or metal materials by simulating the salt spray environmental conditions created by the salt spray test equipment. The test is divided into two categories, natural environmental exposure test and artificial accelerated simulated salt spray environmental test.


Test items


Neutral salt spray test | acetate spray test | copper accelerated acetate spray test | comprehensive salt spray test


Reference standards

GB/T 2423.17, GB/T 10125, GB/T 2423.18, GB/T 2423.18-2000, GB/T 10587-2006, GB/T 6461, GB 6458, GB 6459, GB 6460, GB 5938, GB 5939, GB 5940, GB 1771, GJB 150.11-86, ISO 9227, IEC 60068-2-11, IEC 60068-2-52, ASTM B 117, ASTM B 368, MIL-STD-202, EIA-364-26, PV1210

GB/T 2423.17, GB/T 10125, GB/T 2423.18, IEC 60068-2-11, IEC 6461, 6458, 6459, 6460, 5938, 5939, GB 1771, GJB 150.11-86, ISO 9227, IEC 60068-2-11IEC 60068-2-52, ASTM B 117, ASTM B 368, MIL-STD-202, EIA-364-26, PV1210, etc.


Temperature and humidity test


Temperature and humidity tests are applicable to products that may be used in warm and humid environments. For plastic materials, printed circuit boards (PCB) and print circuit board assemblies (PCBA) porous materials or finished products, etc., different forms of physical reactions occur between different materials and temperature and moisture. The effects of temperature are mostly plastic deformation or poor product starting at high temperature or low  temperature. In humid environments, moisture adsorption, infiltration and condensation occur on the surface of porous materials due to the capillary effects. Products often fail due to electrostatic charge accumulation effects in low temperature environments.


Test items


High temperature | low temperature | constant temperature and humidity | alternating humid heat | rapid temperature changes | thermal shock


Test standards


Test item

Test standard

High temperature test

GB/T 2423.2, IEC 60068-2-2, EN 60068-2-2 

Low temperature test

GB/T 2423.1, IEC 60068-2-1, EN 60068-2-1

Rapid temperature change test

GB/T 2423.22, IEC 60068-2-14

Thermal shock test

GB/T 2423.22, IEC 60068-2-14, EIA-364-32

Constant humidity and heat test

GB/T 2423.3, IEC 60068-2-78, EN 60068-2-78

Temperature variation test

GB/T 2423.22, IEC 60068-2-14, EN 60068-2-14

Alternating humidity and heat test

GB/T 2423.4, IEC 60068-2-30, EN 60068-2-30

Alternating humidity temperature and

 humidity combined cycle test heat  

GB/T 2423.34, IEC60068-2-38, MJL-STD-202

Temperature/humidity cycle

GB/T 2423.34, IEC 60068-2-38, EN 60068-2-38



High Accelerated Life Testing


HALT means Highly Accelerated Life Testing, a method of applying step stress to the testing samples to detect defects, operational design limits, and structural strength limits in an early stage. The defects exposed by HALT in the test product involve aspects including circuit design, process, components and structure, etc.


Test items


Low temperature stepping stress test | high temperature stepping stress test | rapid thermal cycling test | vibration stepping stress test | comprehensive stress test


Vibration, impact collision, drop testing


Vibration test


In vibration test, a series of vibration phenomena is simulated to test whether a product could withstand the vibration environment in the process of transportation or use in its life cycle, and also to determine the requirements of product design and function standards.


Impact test

Impact is a sudden and violent release of energy, energy-benefit conversion and energy disk transmission. The duration of impact is short, and the impact process is completed in one shot without showing any periodicity.


Drop test


Drop test is a process which stipulates a product to drop from a certain height to the test surface to verify the adaptability of the product when dropped during transferring due to rough handling.


Test standards


Test item

Test standard

Vibration 

test 

 Sine 

vibration

GB/T 2423.10, GB/T 4857. 1, GB/T 4857.7,ISO 8318, ISO 2247, IEC 60068-2-6,EN 60068-2-6

Random 

vibration

GB/T 2423.56, IEC 60068-2-64

 Impact test

GB/T 2423.5, GB/T 2425 .6, IEC 60068-2-27

 Collision

 test

GB/T 4857.20

 Drop test

GB/T 2423.8, IEC 60068 -2-31


Three comprehensive test


Comprehensive environmental test is a combination of two kinds of environmental stress. The effects of a comprehensive environment more realistically and practically reflects the performance of products in actual use, and is able to better expose the defects of products.

 

Reference standards


GB/T 2423.35 ; GB/T 2423.36 


Gas corrosion test


Most product are used in the atmospheric environment, and most corrosions occur in the atmosphere, which contains corrosive components and factors such as oxygen, humidity, temperature changes and pollutants.


Reference standards

EJA-364-65 ; GB/T 2423.51 ; IEC 60068-2-60

  

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