How do I know that the failures found in the extreme stresses of HALT are the same as the failures that will occur during normal use?
Every product has a set of failure modes built into the design and determined by the manufacturing process. These failure modes will all eventually appear in the field. HALT stresses only accelerate the onset of these same failures. Some new Qualmark customers have “explained away” HALT failures only to have the same failure modes appear later as high field returns. HALT is an engineering tool and engineers determine which stresses to apply to a product in order to avoid the application of stresses that would never occur in use.
