Determination of some constant parameters during cutting of canola stem

Abstract

In this study, the canola stalk cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient were examined.  For the tests, testing machine Instron (Model Santam STM-5) with 50 N load cell was used.  Cutting was performed with a saw-serrated cutting blade that was attached to the Instron movable jaw.  Stems were cut at three diameter levels (1 to 3, 3 to 5 and more than 5 mm), three cutting speed levels (75, 115 and 150 mm/minute), three cutting angles (0°, 30° and 60°) and three replicates.  Cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient were examined.  Tests lasted for each stem until the full cut.  Data requirements were obtained from Force-Deformation curve.  The results showed that the modulus of mass density, special work of useful cutting and crush resistance coefficient were enhanced by increasing the diameter and cutting angle.  As well as modulus of mass density, special work of useful cutting and crush resistance coefficient were decreased by increasing the cutting speed.  Also, the coefficient of cutting useful work was enhanced by increasing diameter, but the changes in the diameter and cutting speed had no significant effect on it.