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| najafi, payam; marzban, afshin; hormozi, mohammad ali. |
| Evaluation of maintenance strategies is an issue which must widely be considered. This paper describes failure rate, mean time between failures (MTBF) and availability analysis for Austoft 7000 sugarcane harvesters series used in agro-industries in southwestern Iran. Sugarcane harvester was divided into three subsystems and the failures were studied for 1800 working hours. The failure rate of subsystems including hydraulic, mechanical and electrical were calculated 0.087, 0.052 and 0.012 h-1, respectively and the total failure rate was 0.15 h-1. MTBF after 1800 working hours were obtained 11.46 h, 19.35 h and 85.71 h for the aforementioned subsystems and machine MTBF was 6.64 h. Among the three studied subsystems, hydraulic with maximum failure rate and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Availability; Failure rate; MTBF; Sugarcane harvester. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3101 |
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| Afsharnia, Fatemeh. |
| The use of tractors for agricultural works showed an important role to mechanized agricultural sector. A repairable mechanical system (as agricultural tractor) is subject to deterioration or repeated failure. In this study, the regression model was used to predict the failure rate of MF399 tractor. The machine failure pattern was carefully studied and key factors affecting the failure rate were identified in five regions of Khouzestan province. Results showed that different annual use hours and maintenance policies affected failure rate. According to the data, the MF399 tractors included in 300-1000 annual use hours were commonly in a randomized breakdown period during their useful life but these tractors tend to enter the wear out period in the 1200-2000... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Failure rate; Tractor; Maintenance condition; Khouzestan. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2964 |
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