This test provides a short-term
simulation of the long-term effects of temperature cycling. The thermal
cycling provides a breathing action, inducing the corrosion process.
The purpose of high temperature storage testing is
to determine a products ability to withstand storage in a high
temperature environment such as a warehouse located in the tropics.
Exposure to high temperature can cause physical damage or a
deterioration of performance.
Conversely, low temperature storage testing's purpose is to determine
the effects in a low temperature environment, looking for the same
effects as In high temperature storage. Temperature shock is performed
to determine is the product can withstand sudden changes in temperature
physically damaged or performance impaired.
Low Temperature Storage:
- Hardening and embrittlement of materials.
- Binding of parts from differential contraction of
dissimilar materialsand the different rates of expansion of different
parts in response to temperature transients.
- Loss of lubrication and lubricant flow due to
- Changes in electronic components.
- Cracking and crazing, embrittlement, change in
impact strength, and reduced strength.
- Static fatigue of restrained glass.
- Condensation and freezing of water.
- Parts binding from differential expansion of
- Lubricants becoming less viscous; joints losing
lubrication by outward flow of lubricant.
- Materials changing in dimension, either totally or
- Packing, gaskets, seals, bearings and shafts
becoming distorted, binding, and failing causing mechanical or
- Gaskets displaying permanent set.
- Closure and sealing strips deteriorating.
- Electronic circuit stability.
- Altering of operating/release margins of relays or
magnetic or thermally activated devices.
Shortened operating lifetime.
- Discoloration, cracking or crazing of organic
For more information on this or any service we provide, please feel
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Typical test plans