SARA Software

Simulation Assisted Reliability Assessment (SARA) - A CALCE methodology that uses physics-of-failure based principles and software to assess whether a part/system can meet defined life cycle requirements based on its materials, geometry, and operating characteristics. The software implements math-based physics models and allows for the creation of a computer model of the design. Thus, the design can be assessed prior to fabrication. The SARA software is used to support the CALCE Design for Reliability (DfRTM) assessment process, which allows design engineers to interactively make design changes and rapidly assess the impact of product reliability. The SARA software can be used to assess life expectancy of electronic hardware under anticipated life cycle loading conditions, as well as under accelerated stress test conditions. The assessment of life expectancy under anticipated life cycle loading conditions is referred to as the virtual qualification (VQTM) process.

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MOCA Software

A methodology and it’s implementation (MOCA) has been developed for determining the part obsolescence impact on life cycle sustainment costs for the long field life electronic systems based on future production projections, maintenance requirements and part obsolescence forecasts (Figure 1). Based on a detailed cost analysis model, the methodology determines the optimum design refresh plan during the field-support-life of the product. The design refresh plan consists of the number of design refresh activities, their respective calendar dates and content to minimize the life cycle sustainment cost of the product. The methodology supports user determined short- and long-term obsolescence mitigation approaches on a per part basis, variable look-ahead times associated with design refreshes, and allows for inputs to be specified as probability distributions that can vary with time.

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