Under the condition of constant temperature and humidity test chamber is mainly used to simulate the natural material aging test, in many cases, the operating error, will lead to system failure factors such as experiment of deviation and even failure, standard group senior engineer analysis about the test result of failure reason, hope to pay more attention in the process of test.

One, the influence of the temperature cyclic stress parameters:

There are mainly six basic parameters: (1) ceiling temperature; (2) the lower temperature; (3) temperature change rate; (4) limit temperature holding time; (5) the lower temperature holding time; 6 cycles.

Second, the influence of the temperature cycle stress features:

In the temperature cycling test, constant temperature and humidity test in the airflow uniformity is an important parameter, this parameter will influence the temperature change rate of the products. This requires trial products in more than one test at the same time, test products, between the products and proper intervals between test chamber wall, so that can flow between the test product, test products and free circulation between the walls.

Third, the failure of stress induced mechanism and the influence of the sensitive element:

Temperature cycle made of different materials with different expansion coefficient of expansion, stripping, cracking and its sensitive components such as paint coating layer.

(1), temperature cycle make screw connection or riveted joint not firm the relaxation, the sensitive element, such as screw, riveting components, etc.;

(2), temperature cycle, insufficient mechanical tension relaxation pressure distribution of the joint; Instrument use material with poor brazing contact trigger resistance increase or induce open circuit, the sensitive element such as resistance element;

(3), temperature cycle of contact corrosion and pollution, its sensitive components such as alloy material.

We can see our website E005 Constant temperature and humidity chamber product detailed information.

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