Determination of Physical and Mechanical Properties of Lunar Cabbage

In this study, some physical, gravitational and mechanical properties of a type of lunar cabbage called Ghonabid were measured and evaluated. The results of the physical properties showed that the averages of large diameter, middle diameter, small diameter, arithmetic mean diameter, mean geometric diameter, surface area and spherical coefficient of lunar cabbage were 87 mm, 82.57 mm, 72.71 mm, 80.76 mm, 80.45 mm, 8.34 cm2, 0.922, respectively. The results of gravity properties showed that the averages of mass density, real density and porosity were 280.33 kg/m3, 928.76 kg/m3 and 69%, respectively. The mechanical properties evaluation tests showed that the averages of fracture stress, fracture strain, elasticity coefficient, degree of toughness, rolling friction coefficient and sliding friction coefficient of this plant were 1.12 MPa, 0.25, 4.24 MPa, 0.658 mJ/mm2, 0.05 and 0.64 in the order mentioned. Findings of this research can be widely applied in the design of machinery used in harvest, transfer, separation, grading, washing, quality inspection, maintenance, processing and food packing operations.