The increased pressure to produce more reliable products more quickly and profitably has driven the rise in test parameters now requiring HALT and HASS. Although the term HALT was coined in the 1990s, entities new to HALT and HASS implementations occasionally are not clear on established HALT and HASS technology, specifications and definitions. HALT/HASS standards created by GM in 2002 and other entities since provide a solid foundation for HALT/HASS programs, clearly defining the critical elements of HALT and HASS, namely:
1) Rapid thermal changes (at least 60°C/min)
2) Random shock, typically delivered by pneumatic actuators
2) Six degrees of freedom (x, y, and z and rotational energy around these axis)
3) Combined environment (rapid thermal changes + random shock)
To better promote these standards, Qualmark has formed a committee whose purpose is to help guide and better define the specifications of HALT and HASS testing and establish a uniform HALT/HASS standard. Qualmark will utilize its partnerships with many Fortune 500 firms and memberships in many global professional organizations concerned with accelerated reliability to better establish correct global specifications. Organizations seeking a copy of the GM specifications or assistance in this endeavor can contact professionalservices@qualmark.com.