Prediction of repair and maintenance costs of two-wheel tractors in Iran

Paper


Ranjbar, Iraj, Rashidi, Majid and Khabbaz, Borzoo Ghareei. 2010. "Prediction of repair and maintenance costs of two-wheel tractors in Iran." 17th World Congress of the International Commission of Agricultural and Biosystems Engineering (CIGR 2010): Sustainable Biosystems Through Engineering. Quebec City, Canada 13 - 17 Jun 2010 Quebec, Canada.
Paper/Presentation Title

Prediction of repair and maintenance costs of two-wheel tractors in Iran

Presentation TypePaper
AuthorsRanjbar, Iraj (Author), Rashidi, Majid (Author) and Khabbaz, Borzoo Ghareei (Author)
Journal or Proceedings TitleProceedings of the XVIIth World Congress of the International Commission of Agricultural and Biosystems Engineering (CIGR 2010)
Number of Pages10
Year2010
Place of PublicationQuebec, Canada
ISBN9782981106216
Web Address (URL) of Paperhttp://www.bioeng.ca/cigr2010
Conference/Event17th World Congress of the International Commission of Agricultural and Biosystems Engineering (CIGR 2010): Sustainable Biosystems Through Engineering
Event Details
17th World Congress of the International Commission of Agricultural and Biosystems Engineering (CIGR 2010): Sustainable Biosystems Through Engineering
Event Date
13 to end of 17 Jun 2010
Event Location
Quebec City, Canada
Abstract

Predicting of repair and maintenance (R&M) costs of tractors in any mechanized farm is necessary for owners and managers to obtain information on overall maintenance costs in order to control production cost. In this context a study was conducted to predict accumulated R&M costs (Y) of two-wheel drive (2WD) tractors based on total usage hours (X) in Misagh-e- Sabz Agribusiness Company in Iran. Recorded data from the company was used to determine
regression models for predicting total R&M costs (as percentage of initial purchase price) based on total usage hours. The statistical results of the study indicated that in order to predict total R&M costs of 2WD tractors with based on usage hours of 2260 h or less the power regression model Y = 0.013 (X/100)1.677 with R2 = 0.976, and to predict total R&M costs of 2WD tractors with based on usage hours of 2260 hours or more the polynomial regression model Y = 0.004 (X/100)2 – 0.181 (X/100) + 4.373 with R2 = 0.998 is strongly suggested. Results of the study also indicated that total R&M costs predicted in this study were lower than those predicted in the previous studies. Cumulative life of 12000 hours, for instance, indicated an total R&M costs equivalent to 40.3% of initial purchase price. The most likely reasons that explain these differences between the predicted results in this study and those predicted in the previous studies probably can be attributed to new
tractor technology for production during the last two decades and lower labor wages in Iran.

Keywordsrepair and maintenance costs; two-wheel drive tractor; prediction; modeling; Iran
ANZSRC Field of Research 2020380101. Agricultural economics
300208. Farm management, rural management and agribusiness
409901. Agricultural engineering
Public Notes

No evidence of copyright restrictions preventing deposit.

Byline AffiliationsIslamic Azad University, Iran
National Centre for Engineering in Agriculture
Institution of OriginUniversity of Southern Queensland
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