1. Screening test

Non-destructive stress inspection of all products eliminates hidden dangers, primarily to eliminate early failures and reduce the number of substandard products.

It is often used as a factory inspection by the manufacturer, and the user is used as an inspection before use.

Including tests under high temperature conditions and other stress tests, it is widely used in various components and components used in highly reliable products.

2, aging test

The product or component is tested for a period of time to stabilize product performance before it is put into service.

In order to ensure that the product does not deteriorate and deteriorate during the test, the purpose of selecting defective products is to focus on how to set the test conditions.

It is often used in the whole machine and components by testing the early failures in the bathtub curve.

3. Type test (validation test, type test)

The type test includes some tests in the production process (such as welding temperature, welding time, curing temperature, curing time, electrostatic protection), and product environmental adaptability in the finished product stage.

The type test should cover the contents of the environmental test as much as possible.

Synchronized or post-production in the product development and development phase, the purpose of the test is to assess the adaptability of the developed products to various environmental conditions while meeting the technical specifications. Prepare for the production of the corresponding quality license.

In the development stage, components that are prone to problems, such as components, PCB boards, and connectors, must be tested through trial and error.

4. Routine test

In the process of stable production of the product, routine tests are carried out in batches, and regular routine tests are carried out. The test contents are mainly high and low temperature, warm cycle, warming and damp heat.

Routine tests can be performed on products as well as semi-finished products, components, or critical components.

5, life test

The most concerned issue for the development and production unit is that after the product is finalized, the reliability of the product and the long-term working life test are necessary to evaluate the use time of the product.

The life test and the corresponding statistical calculations can be combined to obtain the reliability index of the product, so the reliability of the product is closely linked to the life test.

The reliability of different products can have the following different focuses:

A, short-term reliability

B, long-term reliability

C, trouble-free working time

6, other tests (often happen in actual work)

In the user's use, it is often required to use conditions higher than a certain original technical index, so it is necessary to carry out the test of excess use. For example, solder-resistant thermal components at 230 ° C for 10 seconds can be used at 260 ° C for 6 seconds.

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