Volume 5 Issue 4 Article 14

Design, Construction and Evaluation of grain harvester combine’s header loss based on statistical analysis and modeling the optimal factors

Raheleh Fadavi1*, Shamsollah Abdollahpour1 Mohammad Moghaddam2

1Department of Biosystems engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran;
2Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, Ira

Keywords: [Header loss of combine, Designing, Construction, Reel index, Response surface method]

Page No:537-544

Received – May 05, 2017; Revision – August 25, 2017; Accepted – September 02, 2017
Available Online - September 10, 2017


This study was conducted to evaluate the efficacy of grain harvester in wheat field, in the West Azarbaijan province of Iran. Efficacy was accessed in both lab and field test, where as lab test included CATIA, V5 R21 design. Data from the sensor and wooden frame were utilized forstatistics analysis. Moreover, the effects of forward speed of combine (Vc) and peripheral speed of reel ?s tip (Vr) were also studied on header loss (reel index= Vr/Vc). Statistical analysis study was conducted by the Factorial analysis of variance with randomized complete block design32 (4 replications), with the help of SPSS19 software. The result of the Duncan?s test found that the differences between means of two trails are significant at 5% probability level. Paired samples test was used to compare mean between header loss data that have been obtained from wooden frames and two systems, results of study revealed 1.6 and 0.78 reel index (RI). Duncan ?s test found that the difference between means of two equipments and wooden frame is not significant. In response surface method, central composite design was used to modeling and finding optimal levels of mentioned factors; at the optimum condition, minimum combine header loss were reported1.1 for RI.

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