Effects of moisture content, internode position and loading rate on the bending characteristics of barley straw
2009
Tavakoli, H.,University of Tehran (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering | Mohtasebi, S.S.,University of Tehran (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering | Jafari, A.,University of Tehran (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering
This study was conducted with the aim to evaluate the effects of the moisture content, internode position, and loading rate on the bending characteristics of barley straw including bending stress and Young's modulus. Nine treatments were performed as randomised complete block design with 5 replications. The characteristics were determined at three moisture levels (10%, 15%, and 20%), three loading rates (5, 10, and 15 mm/min) and three internodes (the first, second, and third internode). The results showed that both the bending stress and Young's modulus decreased with the increase in the moisture content and towards the third internode position. The bending stress varied from 6.32 to 12.41 MPa, while the average Young's modulus ranged from 330.94 to 618.91 MPa. As shown by the results obtained, the values of the characteristics increased with increasing loading rate.
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