George-Horea CRIȘAN, Nicolae FILIP


 Abstract: This paper aims to identify the negative consequences of non-compliance revisions program of an urban public transport fleet and also identifying ways to optimize maintenance activity, through a case study conducted using a database management system and a data simulation program. The research has been carried out based on academic literature and carriers concrete maintenance problems and it has proposed finding directions for maintenance activity optimization, using computational programs. The paper identifies the effects of non-compliance revisions schedule on the incidence of defects occurrence, fuel consumptions, revisions time and costs, reparations time and costs. Thus, it can be created a maintenance program focused on reducing the number of accidental failures and lowering their consequences by applying an analytic algorithm using data archived in the database. The originality of the paper is that allows the identification and ranking of results generated by the poor maintenance of transport fleet analyzed in the case study, through developing a computer application that allows the simulation data from the carrier maintenance database.

Key words: buses, maintenance, database, simulation program, optimization.

Full Text:



Crișan, H.G., Filip, N., Influence of malfunctions of the maintenance activities on the urban buses fuel consumption, Central European Journal of Engineering, Vol. 4. Issue 2, pp.178-185, 2014.

Crișan, H.G., Filip, N., The reliability test of elastic steering components from passengers urban buses, IN-TECH Proceedings, Dubrovnik, pp. 268-271,2015.

D.I., Documentație internă Societatea de Transport Public S.A. Turda “Unpublished Manuscript, Transport Company archive”, Turda-România, 2015.

Harrington, J.L., Using SQL to Implement a Relational Design, Relational Database Design and Implementation, 4th edition,

p.p. 191-213, 2016.

Hodkiewicz , M., Tien-Wei Ho, Cleaning historical maintenance work order data for reliability analysis, Journal of Quality in Maintenance Engineering, Vol. 22 Issue: 2, pp.146 – 163, 2016.

Koussaimi M.A., Bouami, D., Elfezazi, S., Improvement maintenance implementation based on downtime analysis approach, Journal of Quality in Maintenance Engineering, Vol. 22 Issue: 4, pp.378 – 393, 2016.

Laze, D., Achimaș, Gh., Zelea, I.,T., Maintenance of the brake sistems in the commercial vehicles, Series: Applied Mathematics, Mechanics, and Engineering, Acta Technica Napocensis, Vol.58, Issue II, 2015.

Márquez, A.C., Herguedas, A.S.,Learning about failure root causes Through maintenance records analysis,

Journal of Quality in Maintenance Engineering, Vol. 10 Issue: 4, p.p.254 – 262, 2004.

M.W., Mathworks tutoriale de lucru în Matlab, available at:http://www.mathworks.com/

Poornachandra, S., Wavelet - based Denoising using subband dependent threshold for ECG signals, Digital Signal Processing, Volume 18, Issue 1, p.p. 49-55, 2008.

Vulcu, O.I., Arghir, M., Games diagnosis of vehicle steering system, Series: Applied Mathematics, Mechanics, Acta Technica Napocensis, Vol.56, Issue IV, 2013.

Zohrul Kabir, A.B.M., Evaluation of overhaul/replacement policy for a fleet of buses, Journal of Quality in Maintenance

Engineering, Vol. 2 Issue: 3, pp.49 – 59, 1996.


  • There are currently no refbacks.