What are the contents of the three comprehensive tests?

Date：2024-02-26 16:46:41Views：36

The three comprehensive tests are experiments that combine temperature, humidity, and oscillation functions. The experimental conditions are achieved by combining a constant temperature and humidity experimental box or a rapid temperature rise and fall experimental box with an oscillation table, in order to assess the adaptability of the test object or evaluate its behavior. Compared with the effect of a single element, it can more accurately reflect the adaptability of electrical and electronic products to temperature, humidity, and oscillation composite environmental changes during transportation and actual use, revealing the shortcomings of the product. It is an essential experimental technique in the entire process of new product development, prototype experiments, and product qualification judgment experiments.

purpose

The three comprehensive tests mainly provide a temperature and humidity changing environment for scientific research and production units such as aerospace, aviation, petroleum, chemical, electronics, and communication. Together, the electrical oscillation stress can be applied to the test object in the experimental box according to the prescribed cycle, allowing users to conduct temperature, humidity, oscillation induction stress screening experiments on the entire machine (or components), electrical appliances, instruments, data, etc., in order to assess the adaptability of the test object or evaluate its behavior. Compared with the effect of a single element, it can more accurately reflect the adaptability of electrical and electronic products to temperature, humidity, and oscillation composite environmental changes during transportation and actual use, revealing the shortcomings of the product. It is an essential experimental technique in the entire process of new product development, prototype experiments, and product qualification judgment experiments.

Test type

1. Two comprehensive tests

Vibration temperature, temperature humidity, vibration humidity,

2. Three comprehensive tests

Vibration Temperature Humidity

Applicable scope

Computer category: precision instruments such as computers, display screens, mainframes, computer components, medical equipment, etc

Electronic communication category: mobile phones, radio frequency devices, electronic communication components, etc

Automotive and marine electrical appliances: components and equipment such as automobiles, ships, household appliances, lighting fixtures, and transformers

Other: packaging boxes, transportation equipment, etc

The three comprehensive experiments of temperature and humidity oscillation refer to the addition of environmental durability experiments on the basis of oscillation experiments. That is, the products are also fixed in temperature and humidity chambers, and temperature and humidity conditions are set according to requirements. Vibration tests are conducted under certain temperature and humidity parameters.

The intention of the temperature and humidity oscillation three comprehensive experiments is to determine the weak links in the product design structure. Based on the experimental results of this experiment, the product manufacturer is able to discover the working condition and service life of the product under the preset usage environment, and then more accurately adjust the maintenance conditions of the product to ensure the quality of mass production.

After the completion of the temperature and humidity oscillation three comprehensive experiments, the prototype will be inspected, including structural damage, loose parts, data rupture, functional abnormalities, etc., and a testing report will be provided based on the testing data.

The commonly used reference standards for electronic and electrical products in the three comprehensive experiments of temperature and humidity oscillation are as follows:

GB/5170.2-1996 Method for Parameter Calibration of Environmental Experimental Equipment for Electrical and Electronic Products (Temperature Experimental Equipment)

GB2423.1-89 Fundamental Environmental Testing Regulations for Electrical and Electronic Products (Experiment A Low Temperature Test Method)

GB2423.2-89 Fundamental Environmental Testing Regulations for Electrical and Electronic Products (Experiment B High Temperature Test Method)

GB/T2423.3-93 Fundamental Environmental Testing Regulations for Electrical and Electronic Products (Wet Heat Test Method)

GJB150.3-86 Military Equipment Environmental Test Methods (High Temperature Test)

GB/T 28046.4, ISO 16750-4, GMW 3172, VW80101, GB/T 10485, etc.

The above is an introduction to the three comprehensive tests. If you have any needs in this regard, please feel free to consult Chuangxin Testing!