DETERMINATION OF SOME PHYSICAL AND MECHANICAL PROPERTIES OF STYRAX (STYRAX OFFICINALIS L.) GROWN IN NATURAL ENVIRONMENT

摘要

The physical parameters of styrax seeds play an essential role in designing equipment to handle,harvest,process,and store the seeds.In this study,we determined various physical properties (dimension,geometric mean diameter,sphericity,bulk density,true density,volume,hardness,and porosity) of styrax seeds.The values of thousand-grain weight,geometric mean diameter,sphericity,projected area,bulk density,and true density were 427.17 g,9.54 mm,28.86 mm,87.75%,85.98 mm2,579.6 kg m-3,and 1015.9 kg m-3,respectively.Knowing the physical properties of the equipment used in plantation,harvesting,transportation,storage,and processing of styrax seeds is very important. Here,we studied the physical and mechanical properties of styrax,such as length,width,thickness,sphericity degree,projected area,porosity,terminal velocity,and rupture strength,and investigated the relationship between them.These features are essential for projecting agricultural machines; for example,terminal velocity projects the fan of the harvester.The measurements were performed using the biological material testing equipment,image processing techniques,and terminal velocity measuring devices.