HASS - Highly Accelerated Stress Screening

All assembly processes (together with component and design tolerances) can introduce potential weaknesses into products. These need to be removed to enhance reliability. Weaknesses may be precipitated by subjecting sub-assemblies and/or finished units to carefully controlled levels of stress; faulty products are screened out before reaching the end customer. Suitable stress levels can be determined via a HALT evaluation exercise. Used during production to identity manufacturing weaknesses.