Thermal Shock

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Thermal Shock 2017-04-19T13:46:52+00:00

Thermal shock maximises the differential expansion and contraction of large and small components (even in plastics and metals) and this opens up weak spots. Multiple shock cycles develop damage in these weak spots, highlighting the problem areas.

Thermal shock maximises the differential expansion and contraction of large and small components (even in plastics and metals) and this opens up weak spots. Multiple shock cycles develop damage in these weak spots, highlighting the problem areas.

The more complex a product is the more the interaction between components can be a source of weakness.

Ultimately, most electrical product failures resolve down to a mechanical failure, even if at a microscopic level. Damage can be cumulative, a weak joint, a lifting circuit track, a fractured component lead or SMD components that had too little solder paste when re-flowed.

The key point is that a well designed and constructed product will survive multiple thermal shocks but a weak one won’t. We have the capability to perform thermal shock testing in air-to-air or air-to-water:

  • -70 to +180°C
  • Transition time <10 second
  • Any duration, any number of cycles*
  • Ice water shock test also available (non-UKAS accredited)

*Duration and cycles are usually defined by the applicable standard.

Alphatech Test house has the capability of running tests according to the following Thermal shock standards :

  • BS EN 60068-2-14: test Na
  • MIL-STD-810G: Method 503.5
  • DEF STAN 00-35: Test CL14
  • RTCA DO-160: Section 5

See our accreditation schedule and capabilities document for the more information, or simply contact us.

 

Accreditation Schedule
Capabilities Document