Using materials prognosis to maximize the utilization potential of complex mechanical systems

Performance and life limits for structural materials in complex mechanical systems are often established based heavily on a fear of failure. Conventional approaches for avoiding structural failure often involve extensive periodic inspections, lengthy maintenance processes, and highly conservative "go, no-go" operational decisions, all of which may significantly impair system readiness. This article summarizes a typical present-day life-management process for an advanced system and then presents the key elements of an alternative life-management approach known as materials damage prognosis.