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As any good certified reliability engineer (CRE) will tell you, the statistical behavior of failures, whether while under test or in the field, can go a long way towards giving you insight as to failure mechanism, root-cause, and reliability prediction. This often involves taking time-to-failure (TtF) information and fitting to the best distribution, whether normal, lognormal, exponential, or Weibull.

DfR provides a unique ability to identify and interpret statistical behavior and merge this information with an understanding of the actual physical mechanisms inducing failure. These two approaches a degree of validation that is often missing from most technical support teams. For example, when the curve fitting to failure data suggests a constant failure rate, DfR experts can compare that to our knowledge of the failure mechanisms and determine if a more other distributions are more appropriate.

Our expertise in failure statistics is not just limited to reliability prediction. We also have expertise and experience in design of experiments to quantify or qualify parametric interaction and sample size and test time determination for accelerated life test planning.

For more information regarding DfR’s Statistical Analysis services, please call us at 301-474-0607, or send us an email.