Methodology for the monitoring, control and warning of defects for preventive maintenance of rails

Labropoulos, KC; Moundoulas, P; Moropoulou, A

dc.contributor.author	Labropoulos, KC	en
dc.contributor.author	Moundoulas, P	en
dc.contributor.author	Moropoulou, A	en
dc.date.accessioned	2014-03-01T02:50:32Z
dc.date.available	2014-03-01T02:50:32Z
dc.date.issued	2006	en
dc.identifier.issn	17433509	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35132
dc.subject	Preventive rail maintenance	en
dc.subject	Rail defect management	en
dc.subject	Risk indices	en
dc.subject.other	Defects	en
dc.subject.other	Electric vehicles	en
dc.subject.other	Fracture	en
dc.subject.other	Maintenance	en
dc.subject.other	Risk analysis	en
dc.subject.other	Ultrasonics	en
dc.subject.other	Preventive rail maintenance	en
dc.subject.other	Rolling contact fatigue (RCF)	en
dc.subject.other	Visual inspection	en
dc.subject.other	Railroad transportation	en
dc.subject.other	control system	en
dc.subject.other	data management	en
dc.subject.other	decision making	en
dc.subject.other	maintenance	en
dc.subject.other	monitoring system	en
dc.subject.other	railway transport	en
dc.subject.other	risk assessment	en
dc.subject.other	transportation planning	en
dc.subject.other	warning system	en
dc.title	Methodology for the monitoring, control and warning of defects for preventive maintenance of rails	en
heal.type	conferenceItem	en
heal.identifier.primary	10.2495/CR060911	en
heal.identifier.secondary	http://dx.doi.org/10.2495/CR060911	en
heal.publicationDate	2006	en
heal.abstract	The preventive maintenance of rails is necessary for safe, successful and economical railway performance and operations. Rolling contact fatigue (RCF) is one of the main issues that concern the head of the railway. Progressively, RCF defects can propagate inside the material with the risk of damaging the rail, and thus they need to be monitored, categorized, evaluated, and treated through a comprehensive maintenance system. In a previous work with the Athens Metro, an innovative monitoring system was developed based on the capability of non-destructive techniques, such as IR thermography, to inspect and identify defects at early stages and reveal the activated paths of fracture (Moropoulou A., Avdelidis N., et al. Thermosense XXVII, 5782, 371-378, 2005). In the present work with the Athens Piraeus Electric Railways S.A. this system is further integrated into a complete system consisting of three components. The surveillance component identifies the rail defects and includes non-destructive techniques, such as visual inspection, infra-red thermography, ultrasonics, fiber optics microscopy, and ACFM. The data management component receives information from the various defect identification techniques, categorizes them and stores them for further use. The defect warning component uses risk indices such as defect level indices, defect extent indices, and risk threshold values, in order to evaluate the significance of the observed defects. All three components are part of a decision making system that monitors the development of defects, warns for significant threats and schedules rail maintenance.	en
heal.journalName	WIT Transactions on the Built Environment	en
dc.identifier.doi	10.2495/CR060911	en
dc.identifier.volume	88	en
dc.identifier.spage	935	en
dc.identifier.epage	945	en