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Highly Accelerated Life Testing is a screening technique in which
relatively low numbers of stress cycles significantly outside the
normal shipping, storage and operating envelope are applied to:
• Identify areas within the design which may require
modification to increase robustness.
• Precipitate latent defects within components.
• Reduce testing time-scales.
The use of such techniques:
• Improves product ruggedness and hence reliability.
• Reduces development time, and time to market.
• Increases mean time before failure.
• Reduces early life failures in the field.
• Reduces warranty costs and improves customer confidence.
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The Screening Systems QRS 410-T is one of the latest generation
of HALT chambers capable of applying up to 28 grms of random
vibration in 6 axes simultaneously, whilst cycling the temperature
between -60°C and +150°C, at rates of change of up to 60°C per
minute. Thus the maximum stress screening for components in
the minimum time is achieved.
Product Assessment & Reliability Centre Ltd. offers two levels of support for HALT:
• Use of the HALT facility with a basic level of support, covering operation of the chamber.
• As above, with consultancy to assist in tailoring the HALT profile
to your specific product and to guide you through the test process.
Putting your product through a HALT process before embarking on
a qualification test programme helps to find and resolve
weaknesses in the design of a product.
This will mean both time
and money can be saved during qualification. |
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