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6 (98.9.30)
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Combined environmental testing for equipment used on automobiles
- Overview and test approach - |
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Abstract
To maintain the rated safety and performance for the long term in the
environments where the parts are actually used, combined environmental testing is
carried out on electronic equipment mounted on many types of vehicles, as well as for
the machinery built into the electronic equipment. In this article, I would like to present
some examples of the approach of combined environmental testing in which temperature,
humidity, and vibration are combined to create the environments in which the parts are
presumed to be used in the vehicle.. |
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4 (97.10.1)
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Great Expectations for the Combined Environmental Reliability Test(CERT) : For high assembly level or finished products |
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Abstract
In this report, I would like to
present a brief explanation and introduction that can also serve as a guideline for
inaugurating CERT. We shall take a close look at the correlation between failure modes
and environmental stress factors and I shall discuss accelerated results, including new
failure modes occurring under conditions of both combined and independent stress failure
modes being used. We shall also consider application of stress failure modes to reliability
testing under combined conditions that are as close as possible to the actual environment. |
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