Delay-Time Maintenance Models for Technical Systems

  • Sylwia Werbińska-WojciechowskaEmail author
Part of the Springer Series in Reliability Engineering book series (RELIABILITY)


The chapter presents a literature review on delay-time modelling for single- and multi-unit (complex) systems. First, there are introduced the main definitions connected with this maintenance approach. Later, there is presented the analysis of known maintenance models being developed in this research area. The maintenance models for single-unit systems assume two-stage or three-stage failure processes implementation. The optimum policies are discussed, and their several modified and extended models are presented. The main extensions include imperfect inspection implementation, postponed replacement performance, or different types of failures investigation. The classification also includes optimality criterion, planning horizon, and used modelling method. In the case of complex systems, the discussed problems regard to e.g. models’ parameters estimation issues, case studies analysis, or hybrid modelling approach implementation. The main extensions of the developed models are discussed and summarized. At last, the main development directions in delay-time-based maintenance modelling are presented in a graphical form. The brief summary of the conducted literature review is provided with indicating the main research gaps in this modelling area.


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Authors and Affiliations

  1. 1.Wroclaw University of Science and TechnologyWroclawPoland

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