Effect of moisture to shear strength trend of Khao Dok Mali 105 stems

12th TSAE International Conference

Khaeso, Kantapong^1 ; Laloon, Kittipong^1^2^3

Agricultural Engineering Department, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand^1

Agricultural Machinery and Postharvest Technology Center, Khon Kaen University, Khon Kaen, Thailand^2

Postharvest Technology Innovation Center, Office of the Higher Education Commission, Bangkok, Thailand^3

关键词: Combine harvesters;    Data analysis softwares;    Load cells;    Mechanical and physical properties;    Rice harvesting;    Shear tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/301/1/012008/pdf
DOI  :  10.1088/1755-1315/301/1/012008

来源: IOP

【 摘 要 】

In the current rice harvesting, there is a growing popularity of combine harvesters. However, the study of the mechanical and physical properties of Thai rice stems is still limited. This research aims to study the trend of shear strength in various moisture including 50.3, 49.0, 46.6, 24.5, and 20.0 % w.b. of 3 Internodes stem of Khao Dok Mali 105. The shear strength was measured by the Lloyd LR50K Plus Materials Testing Machine. Data analysis software with NEXYGENPlus. With 1 kN of the load cell that combined with the designed shear test equipment. 30 rice stems sample tests per 1 moisture were used which divided into 3 internodes including N1 (upper internode), N2 (middle internode), and N3 (lower internode). The result shows that the shear strength was in the range 5.60-12.02, 5.93-12.96, and 6.07-14.22 MPa which is represented for N1, N2, and N3 respectively. In summary, the shear strength tended to decrease depending on the moisture of rice stems which affected to elasticity of fibers in rice stems. Therefore, this study suggested that the moisture of stems is directly affecting the shear strength.