Environmental reliability refers to the ability of a product to complete specified functions under specified conditions and time. Environmental testing can analyze and verify the impact and mechanism of various environmental factors on product performance, and is widely used in automobiles, communications, electronic appliances and other product categories.

Environmental reliability tests can be mainly divided into the following three types: climatic environmental tests, mechanical environmental tests and comprehensive environmental tests.

1. Climate environment test

Including high temperature test, low temperature test, rapid temperature change test, temperature shock test, constant temperature and humidity test, temperature and humidity cycle test, salt spray test, waterproof and dustproof test, UV aging test and xenon lamp aging test, etc. It is to assess the adaptability of products under various environmental conditions and is one of the important test methods to evaluate product reliability.

01 High temperature test

The high temperature test is a test in which the sample is exposed to a high temperature and dry air environment. The purpose is to determine the suitability of military and civilian equipment for storage and operation under high temperature conditions.

02 Low temperature test

It is used to assess the suitability of test samples for storage or use under low temperature conditions. It is often used for type testing and component screening testing in the development stage of products.

03 Rapid temperature change test

The rapid temperature change test is used to determine the adaptability of products to storage, transportation, and use in climate environments with rapid changes in high and low temperatures.

04 Temperature shock test

It is used to evaluate the adaptability of products to sudden changes in ambient temperature. It is an indispensable test in the qualification test of equipment design and finalization and the routine test in the batch production stage.

05 Constant temperature and humidity test

It is used to test the heat resistance, cold resistance, dry resistance and moisture resistance of materials in various environments. Used in electronics, electrical appliances, mobile phones, communications, instruments, automobiles, plastic products, metal, medical, aerospace and other industries.

06 Temperature and humidity cycle test

It is used to determine the suitability of the test sample for use and storage under hot and humid conditions where temperature cycles change and condensation occurs on the surface.

07 Salt spray test

Salt spray test is an environmental test that mainly uses artificial simulated salt spray environmental conditions created by salt spray testing equipment to evaluate the corrosion resistance of products or metal materials.

08 Waterproof test

The waterproof test is used to determine and evaluate the ability of the equipment to withstand the influence of liquid water sprayed or falling on it during use. It is used to assess whether the product shell and seals can ensure good working performance of the equipment or components after or during the test.

09 Dustproof test

It is used to test the sealing performance of the product's shell. The protection grade codes are IP1X to IP6X. It mainly simulates the sand and dust environment encountered by the product during use, transportation and storage, so as to test the protective performance of its shell.

10 UV aging test

The UV aging test is a test method that uses artificial light sources to simulate the ultraviolet band of sunlight to verify the ability of polymer materials such as organic coatings, plastics, and rubber to resist environmental aging.

11 Xenon lamp aging test

Xenon arc lamps that simulate the full sunlight spectrum can reproduce destructive light waves that exist in different environments, including visible light, ultraviolet light, and infrared light, etc., which can provide corresponding environmental simulation and accelerated testing for scientific research, product development, and quality control.

2. Mechanical environment test

It mainly includes mechanical vibration, mechanical shock and drop test.

Mechanical vibration test

Vibration tests mainly include sinusoidal vibration and random vibration. Simulate the various vibration environmental effects encountered by the product during transportation, installation and use to determine whether the product can withstand various environmental vibrations.

Mechanical impact test

Many products will be impacted during use, loading, unloading, and transportation. This test is used to determine whether each performance will fail when the product is subjected to a series of impacts at normal and extreme temperatures, and to evaluate the impact resistance of the product. According to different pulse waveforms, it can be divided into: half-sine pulse, back-peak sawtooth pulse and trapezoidal wave pulse.

Drop test

Simulate the situation when the product falls to the ground at different edges, corners, and surfaces at different heights, so as to understand the damage to the product and evaluate the drop height and impact strength that the product components can withstand when dropped.

3. Comprehensive environmental testing

A test that simulates two or more environmental factors acting on a product at the same time.

Because the actual use environment of a product is a composite environment composed of multiple environmental factors, comprehensive environmental testing can more realistically simulate the impact of the actual environment on the product.

The comprehensive environmental test simulates the main stresses in the actual use environment, including: vibration stress, temperature stress, humidity stress and product working cycle, etc.