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Mechanical strength of wheat grain varieties influenced by moisture content and loading rate

International Journal of Agricultural and Biological Engineering 2018年第4期11卷 52-57页

作者： Yaoming Li Farman Ali Chandio Zheng Ma Imran Ali Lakhiar Abdul Razaque Sahito Fiaz Ahmad Irshad Ali Mari Umer Farooq Muhammad Suleman Jiangsu University School of Agricultural Equipment EngineeringZhenjiang 212013JiangsuChina Sindh Agriculture University Faculty of Agricultural EngineeringTandojamSindhPakistan Institute of Environmental Engineering and Management MUETJamshoroPakistan Department of Agricultural Engineering Bahaudin Zakaria UniversityMultanPakistan Department of Mathematics COMSATS UniversityIslamabadPakistan

Mechanical shear resistance of wheat grain is a significant concern for the designers and researchers related to the design of threshing,handling and processing machinery of the field *** grain mechanical properties directly affect the machine geometry and its operational *** present study was carried out to determine the shear resistance of five wheat varieties(Locally names;TD-02,Sindhu-1105,Benazir,China and SKD-118)influenced by moisture content(16.7%,18.7%and 19.5%)and loading rate(3 mm/s,6 mm/s and 9 mm/s).However,some physio-dimensional properties(length,width,thickness,slenderness ratio,surface area and sphericity)were obtained at different moisture *** results showed that the shear resistance reduced by increasing the moisture content and loading *** average shear resistance decreased from 10.45 N to 3.74 N for 3-9 mm/s loading rate at moisture content of 16.7%to 19.5%.Thus,the maximum correlation(r=0.905)of shear resistance obtained at 16.7%,whereas minimum correlation(r=0.692)obtained at 19.5%.The shear resistance of wheat grain was highly significant(pgrain whereas deformation is increasing with the increase of moisture ***,the maximum bulk density of wheat grain obtained at 19.5%for SKD-118,while the minimum obtained at 16.7%for *** is recommended that the design and modification of wheat grain processing equipment should be executed on the physio-mechanical properties of grain varieties.

关键词： wheat grain shear resistance bulk density of grain varieties moisture content loading rates

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