Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes9- 1202
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Volume 9 article 210 pages: 456 - 464

Dragan Stamenkovic
University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia

Vladimir Popovic
University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia

Vesna Spasojevic-Brkic
University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia

Jovan Radivojevic
University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia

Product development risk increases more and more every day. One of the factors that affect this risk is product warranty. Warranty is a powerful marketing instrument for the manufacturer and a good protection for both the manufacturer and the customer, but it always involves additional costs to the manufacturer. These costs depend on the product reliability and the warranty parameters. This paper deals with the optimization of these parameters for known product failure distribution to reduce the warranty costs to the manufacturer while retaining the promotional function of the warranty. Combination free replacement and pro-rata warranty policy is chosen as a model and the length of free replacement and pro-rata policy periods are varied, as well as the coeffi cients that defi ne the pro-rata cost function. Warranty costs are obtained by using analytical equations and by simulation. The obtained results are shown and discussed and some concluding remarks are given.

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This paper is a part of two important projects of The Ministry of Science and Technological Development of Serbia (project number TR 35045 – “Scientifi c-Technological Support to Enhancing the Safety of Special Road and Rail Vehicles” and TR 35040 – “Developed New Methods for Diagnosis and Examination Mechanical Structures”). The authors wish to express their gratitude to the investors in these projects, and to all persons who helped making this paper better.

Balcer, Y., Sahin, I., (1986) Replacement Costs Under Warranty: Cost Moments and Time Variability, Operations Research, 34(4), 554–559.

Blischke, W.R., Murthy, D.N.P., (1996) Product Warranty Handbook, New York: Marcel Dekker.

Blischke, W.R., Rezaul, M.K., Murthy, D.N.P., (2011) Warranty Data Collection and Analysis, London: Springer Verlag.

Guangbin, Y., (2007) Life Cycle Reliability Engineering, Hoboken: John Wiley & Sons., consulted 7 September 2011.

Mitic, S., Rakicevic, B., Stamenkovic, D., Popovic, V., (2011) Advanced Theoretical–Experimental Method for Optimization of Dynamic Behaviour of Firefi ghting Vehicle Modular Superstructure, Journal of Applied Engineering Science, 9(1), 267–275.

Mitra, A., Patankar, J.G., (1997) Market Share and Warranty Costs for Renewable Warranty Programs, International Journal of Production Economics, 50(2–3), 155–168.

Nguyen, D.G., Murthy, D.N.P., (1984) Cost Analysis of Warranty Policies, Naval Research Logistics Quarterly, 31(4), 525–541.

O’Connor, P., (2002) Practical Reliability Engineering (4th edn), Hoboken: John Wiley & Sons.

Popovic, V., Vasic, B., (2008) Review of Hazard Analysis Methods and Their Basic Characteristics, FME Transactions, 36(4), 181–187.

Popovic, V., Vasic, B., Petrovic, V., (2010) The Possibility for FMEA Method Improvement and Its Implementation into Bus Life Cycle, Strojniski vestnik – Journal of Mechanical Engineering, 56(3), 179–185.

Popovic, V., Vasic, B., Rakicevic, B., Vorotovic, G., (in press) Optimization of Maintenance Concept Choice Using Risk Decision Factor – a Case Study, International Journal of Systems Science (Accepted for publication April 2011, doi: 10.1080/00207721.2011 .563868).

Ritchken, P.H., (1985) Warranty Policies for Non-Repairable Items under Risk Aversion, IEEE Transactions on Reliability, 34(2), 147– 150.