| Summary: | To develop a cutting, harvesting, crushing or grinding machine, knowledge of the crop’s physical and mechanical properties is needed. In this study, the shear strength, shear energy and maximum shear force in cutting parsley stems is examined. The cutting of multiple stems (eight stems) was performed using blades with oblique angles of 0°, 20° and 40°. In order to examine the effects of the stem arrangement in the cutting operation, the stems were placed in row and bundle arrangements. Statistical analysis showed that the shear strength and maximum shear force decreased with the increasing oblique angle. The average values of the shear strength, specific cutting energy and maximum shear force for cutting eight stems laid in a row arrangement using a blade oblique angle of 0° were 0.49 MPa, 2.25 mJ mm<sup>−2</sup> and 56.13 N, respectively, while at a blade angle of 40°, the values were 0.19 MPa, 4.12 mJ mm<sup>−2</sup> and 18.2 N, respectively. A blade angle of 20°is recommended as it does not require more cutting energy compared to 0°, and the shear force is reduced, which lessens the effect of impacts on the cutting system.
|
|---|