Aging, SOH and Prognosis
• Aging is the reduction in performance, reliability, and life span of a system • End of life (EoL) is reached when the system is no longer able to perform its intended function. • The State-of-health (SOH), which is used to describe its physical condition, is commonly characterized by a system parameter that is correlated with its aging. In most applications the SOH is correlated with the performance requirement, and we are interested in knowing the Remaining Useful Life (RUL). • Aging is enhanced by stress factors • Prognosis is the generation of long-term prediction describing the evolution of aging.
Copyright G. Rizzoni, The Ohio State University, 2024
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