Time-varying Failure Rate For System Reliability
Analysis In Large-scale Railway Risk Assessment
Simulation
Author(s)
H. Zhang, E. Cutright & T. Giras
Abstract
For large-scale dynamic railway traffic control systems, the reliability analysis and
risk assessment are important for system evaluation, decision making and enforcement
of performance-based safety-critical standards. The Axiomatic Safety-
Critical Assessment Process (ASCAP) developed at the University of
Virginia’s Center of Rail Safety-Critical Excellence provides a dynamic Monte
Carlo simulation methodology for the quantitative risk assessment of large-scale
rail systems. An appropriate reliability model is critical for effective and valid
ASCAP simulation results.
In reliability engineering, it is known that the electrical and mechanical equipment,
such as switch machines, track circuits and trip-stops in railway infrastructure,
usually manifest deterioration and/or impro
Keywords
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