Experimental and Theoretical Investigation of the Effects of Moisture Content and Internodes Position on Shearing Characteristics of Sugar Cane Stems

Authors
R. Hemmatian
G. Najafi
B. Hosseinzadeh
T. Tavakkoli Hashjin
M. H. Khoshtaghaza
Department of Mechanics of Agricultural Machinery, Faculty of Agriculture, Tarbiat Modares University, Tehran, P. O. Box: 14115-335, Islamic Republic of Iran.
Abstract
In the present study, shearing properties of sugar cane stems were determined at five moisture content levels (46, 54, 62, 70 and 78% wb), three shearing speed (5, 10 and 15 mm min-1) and at ten positions on the stem. For measuring the shearing forces, the stems were severed by using a computer aided cutting apparatus. Decrease in moisture content of stem from 78 to 46% wb led to 16.3 and 16.7% decrease in the shearing strength and specific shearing energy, respectively. The maximum and average values of shearing strength of the two moisture contents were found to be 3.482 and 3.1 MPa, and the specific shearing energies were 112 MJ mm-2 and, 102.6 MJ mm-2, respectively. Both the shearing strength and the specific shearing energy were found to be higher in the lower region of the stem due to structural heterogeneity. Results showed that with the increase in shearing speed from 5 to 15 mm min-1, shearing strength and the specific shearing energy increased 3.2 and 4.6%, respectively. The results of ANOVA indicated that effects of the mentioned factors were significant at 1% probability level. The shearing model assessment revealed that the third order polynomial model exhibited the best performance in fitting with experimental data and, by using this model, a significant correlation was found between shearing strength, specific shearing energy, and moisture content (R2= 0.989 and SE= 0.001). Also, a significant correlation was found between shearing strength, specific shearing energy, and shearing speed by using Hoerl model (R2= 0.989 and SE= 0.005).

Keywords

1. ASABE Standards. 2006. S358.2: 1:1 Measurement‐forages. ASABE, St. Joseph, Mich.
2. Baughman, D. R. and Liu, Y. A. 1995. Neural Networks in Bio-processing and Chemical Engineering. Academic Press, New York, 400-450.
3. Chen, Y., Gratton, J. L. and Liu. J. 2004. Power Requirements of Hemp Cutting and Conditioning. Biosyst. Eng., 87(4): 417-424.
4. Esehaghbeygi, A., Hosseinzadeh, B., Khazaii, M. and Masoomi, A. 2009. Bending and Shearing Properties of Alvand Variety of Wheat Stem. WAS J., 6(8): 1028-1032.
5. Esehaghbeygi, A. and Hosseinzadeh, B. 2009. Effect of Moisture Content and Urea Fertilizer on Bending and Shearing Characteristics of Canola Stems. Appl. Eng. Agric., 25(6): 947-951.
6. Esehaghbeygi, A., Hosseinzadeh, B. and Besharati, S. 2010. Nitrogen Use on Yield Components and Stem Shearing Strength of Canola. Electronics J. Pol. Agr. Un., 13 (4): 7-11.
7. Hosseinzadeh, B. 2008. Determining Shearing Strength of Canola Stems and Evaluation of Effective Parameters on Shearing Strength. MSc. Thesis, Shahre-Kord University, Iran.
8. Hosseinzadeh, B., Esehaghbeygi, A. and Raghami, N. 2009. Effect of Moisture Content, Bevel Angle and Cutting Speed on Shearing Energy of Three Wheat Varieties. WAS J., 7(9): 1120-1123.
9. FAO 2009. Food and Agricultural Commodities Production. Available at: < http://faostat.fao.org/site/567/default.aspx#ancor >.
10. Ince, A., Ugurluay, S., Guzel, E. and Ozcan, M. T. 2005. Bending and Shearing Characteristics of Sunflower Stalk Residue. Biosyst. Eng., 92(2): 175-181.
11. Kardany, M. 2008. Effect of Some Cutting Blade and Plant Factors on Specific Cutting Energy of Sugarcane Stalk. MSc. Thesis, Isfahan University of Technology, Iran.
12. Lee, S. W. and Yan, H. 1984. Threshing and Cutting Forces for Korean Rice. Trans. ASAE, 16(2): 1654-1657.
13. Marquardt, D. 1963. An Algorithm for Least Squares Estimation of Non-linear Parameters. J. Soc. Indust. Applied Math., 3: 431–441.
14. Mobli, H., Tavakoli Hashjin, T., Oghabi, H. and Alimardani, R. 2003. Study of the Strength Properties of Pistachio Nuts and Cluster Stem Joints for the Design and Development of a Harvesting Machine. J. Agric. Sci. Technol., 5: 99-104.
15. Nazari Galedar, M., Jafari, A., Mohtasebi, S.S., Tabatabaeefar, A., Sharifi, A., O'Dogherty, M. J., Rafiee, S. and Richard, G. 2008. Effects of Moisture Content and Level in the Crop on the Engineering Properties of Alfalfa Stems. Biosyst. Eng., 101(2): 199‐208.
16. O'Dogherty, M. J. and Huber, A. 1995. Study of Physical and Mechanical Properties of Wheat Straw. Agric Engng. Res., 62: 133-142.
17. Persson, S. 1987. Mechanics of Cutting Plant Material. ASAE, St Joseph, MI, USA. PP. 38-84.
18. Peykani, Gh. R., Kavoosi Kelashemi M., Shahbazi H. and Akrami A. H. 2010. A Determination of Suitable Sugar Cane Utilization System Using Total Factor Productivity (TFP) (Case Study: Imam Khomeini Cultivation and Processing Center in Khuzestan Province), J. Agr. Sci. Tech., 12: 511-521.
19. Summers, M. D., Jenkins, B. M. and Yore, M. W. 2002. Cutting Properties of Rice Straw. Paper. No. 026154. An ASAE Meeting Presentation, Saskatchewan, Canada.
20. Tabatabaee Koloor, R. and Borgheie, A. 2006. Measuring the Static and Dynamic Cutting Force of Stem for Iranian Rice Varieties. J. Agric. Sci. Techol., 8: 193-198.
Journal of Agricultural Science and Technology
Volume 14, Issue 5
September and October 2012
Pages 963-974