TY - JOUR
T1 - Predictive maintenance for aircraft components using proportional hazard models
AU - Verhagen, Wim J.C.
AU - De Boer, Lennaert W.M.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Unscheduled maintenance can contribute significantly to an airline's cost outlay. Reliability analysis can help to identify and plan for maintenance events. Reliability analysis in industry is often limited to statistically based approaches that incorporate failure times as the primary stochastic variable, with additional strict assumptions regarding independence of events and underlying distributions of failure phenomena. This foregoes the complex nature of aircraft operations, where a whole range of operational factors may influence the probability of occurrence of a maintenance event. The aim of this research is to identify operational factors affecting component reliability and to assess whether these can be used to reduce the number of unscheduled occurrences (i.e. failures). To do so, a data-driven approach is adopted where historical operational and maintenance data is gathered and analysed to identify operational factors with a measurable influence on maintenance event occurrence. Both time-independent and time-dependent Proportional Hazard Models (PHMs), models which incorporate operational factors as covariates, are employed to generate reliability estimates. Results obtained from analysing historical data of a set of nine components with respect to unscheduled removals indicates that adopting new maintenance schedules, derived from the proposed reliability models, can reduce the number of unscheduled occurrences.
AB - Unscheduled maintenance can contribute significantly to an airline's cost outlay. Reliability analysis can help to identify and plan for maintenance events. Reliability analysis in industry is often limited to statistically based approaches that incorporate failure times as the primary stochastic variable, with additional strict assumptions regarding independence of events and underlying distributions of failure phenomena. This foregoes the complex nature of aircraft operations, where a whole range of operational factors may influence the probability of occurrence of a maintenance event. The aim of this research is to identify operational factors affecting component reliability and to assess whether these can be used to reduce the number of unscheduled occurrences (i.e. failures). To do so, a data-driven approach is adopted where historical operational and maintenance data is gathered and analysed to identify operational factors with a measurable influence on maintenance event occurrence. Both time-independent and time-dependent Proportional Hazard Models (PHMs), models which incorporate operational factors as covariates, are employed to generate reliability estimates. Results obtained from analysing historical data of a set of nine components with respect to unscheduled removals indicates that adopting new maintenance schedules, derived from the proposed reliability models, can reduce the number of unscheduled occurrences.
KW - Predictive maintenance
KW - Proportional hazard model
KW - Unscheduled maintenance
UR - http://www.scopus.com/inward/record.url?scp=85046379620&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:2d9a3bdd-0640-4538-a6cb-ae449b291891
U2 - 10.1016/j.jii.2018.04.004
DO - 10.1016/j.jii.2018.04.004
M3 - Article
AN - SCOPUS:85046379620
SN - 2452-414X
VL - 12
SP - 23
EP - 30
JO - Journal of Industrial Information Integration
JF - Journal of Industrial Information Integration
ER -