The CALCE Simulation Assisted Reliability Assessment SARA® software uses physics-of-failure principles to assess whether an electronic part or system can meet defined life cycle requirements. The software implements math-based physics models and allows for the creation of a computer model of the electronic product under review. CALCE SARA® software is used to support the CALCE Design for Reliability (DfR) assessment process, which allows design engineers to rapidly make design changes and assess the impact of product reliability. The software can also be used to assess life expectancy of electronic hardware under anticipated life cycle loading and accelerated stress test conditions.