The heat shock test evaluates the ability of an insulative material to endure elevated temperature conditions. Slight variations in test setup exist between the test standards covered by this listing and should be considered before choosing which standard best suits your needs.
Each standard covered in this listing involves the same three elements:
- An elevated temperature exposure.
- A winding or wrap around a mandrel.
- A visual examination for cracks or other damage to the insulation.
All temperatures and exposure durations are dependent on the relevant standard.
The FED-STD-228 and IEC 60811-3-1 standards require the insulation sample(s) be exposed to the elevated temperature while maintained in a wrap around the mandrel. The AS23053 standard requires the insulation sample to hang freely and straight in the oven and undergo a wrap test after the exposure.
Each test is completed with a visual examination for cracks or other damage to the insulation following the heating and wrapping.