Authors

Abstract

Trimming for postharvest cabbage is useful to increase its economic value added. For obtaining the optimal root-cutting parameters, a root-cutting test platform based on universal testing machine was designed. Then shear contrast test and orthogonal test were carried out respectively, and shear properties were explained according to root morphology obtained by scanning electron microscope (SEM). The results showed that the effect of sliding-cutting with single-edged cutter was the best. The optimal parameters of cutter thickness, shear position, shear speed and sliding-cutting angle were respectively 0.89 mm, 0.00 mm, 388.94 mm/min and 34.84°, and the shear stress was 28.02 kPa.

Abstract in Chinese

采后甘蓝整修有利于提升其经济附加值。为了获得采后甘蓝较佳的切根参数，本文基于万能试验机设计了一种切根试验平台。分别进行了剪切对比试验和正交试验，并根据扫描电子显微镜获取的根部形貌对剪切特性进行了分析。结果表明：单平刃滑切作业效果最佳；最优参数组合为刀具厚度0.89 mm，剪切位置0.00 mm，剪切速度388.94 mm/min，滑切角34.84°，剪切应力为28.02 kPa。