Review of delay-time Operational Research OR modelling of engineering aspects of maintenance

This review paper discusses the development of delay-time analysis as a means of modelling engineering aspects of maintenance problems. The main concern of the paper is with the philosophy, underlying principles, assumptions and experiences in practice, with references being given to more detailed accounts elsewhere. The current state of knowledge and research in the area will be outlined, and future trends in modelling applications and research predicted. A question that will be addressed is whether the application of delay-time analysis could and should be de-skilled to the extent that it could be effectively utilised by engineers in the absence of a modelling analyst.