Thermal Cycling Testing (TCT), or simply thermal cycling or temperature cycling, is a test that determines the capability of supplies to resist very low and really high temperatures. It can be conducted to determine their capacity to resist cyclical exposures to those extreme temperatures. Any mechanical failure that happens because of the loading of a cyclical thermo-mechanical nature, is known as a fatigue failure, therefore temperature cycling will increase fatigue failure.
Thermal Shock Testing (TST) which is analogous to TCT additionally will increase fatigue failure.
· Short circuiting of wires in an electrical system
· Fracture or cracking of assemblies or materials because of dimensional changes ensuing from thermal contraction or expansion
· Overheating of assemblies or supplies because of change in heat switch as a result of convection.
After the final cycle is accomplished, the markings will be visually inspected together with different measurements. After the test is concluded, any failure skilled on one or more specific finish-point examinations or measurements, proof of illegible markings, injury or defects to the seals, leads, or case would be thought of a failure.
Thermal cycling test makes use of a temperature cycle chamber to subject the part under test to a selected excessive or low temperature. It then subjects the same unit to a specified low or high temperature for a given variety of cycles.
At the end of the final cycle, exterior visual examination of the seals, leads, and case is completed at 10 X to 20 X. At not more than three X, the marking is then inspected. Any proof of illegible markings, harm or defects to the seals, leads, or case could be thought-about a failure.