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基于压痕加载曲线的谷物籽粒硬度性能测定技术（Testing of Grain Hardness Based on Indentation Loading Curve）
谷物 籽粒 硬度 压入法 试验
2010/5/5
使用500N微机控制材料试验机，利用压痕加载曲线，进行了用针尖压入法测定谷物籽粒硬度的试验研究，测得豌豆、蚕豆、大米、绿豆、小麦、扁豆以及玉米在不同组成部位、不同含水率时的硬度值在2～75MPa范围内。研究表明，试验加载速度在0.25～2.00mm/s范围内、针尖压入深度在0.25～1.50mm范围内时对试验结果无明显影响，而针尖锥度与籽粒硬度存在定量关系。 By using the 500N m...
Effects of moisture content, internode position and loading rate on the bending characteristics of barley straw
barley moisture content loading rate bending stress Young’s modulus
2014/2/26
This study was conducted with the aim to evaluate the effects of the moisture content, internode position, and loading rate on the bending characteristics of barley straw including bending stress and ...
Effects of moisture content, loading rate, and grain orientation on fracture resistance of barley grain
barley grain mechanical properties fracture resistance grain processing
2014/2/26
Force and deformation curves of agricultural materials must be provided for the proper design of harvesting and processing machineries. In this research, the fracture resistance of barley grain was me...
Testing device with opened hydrostatic circuit for dynamic loading of the tractor engine by power take off shaft
power take off shaft measurement of speed characteristic hydraulic liquid hydrostatic generator electro-hydraulic proportional pressure valve
2014/2/28
The developed loading device with opened hydrostatic circuit for measurement of speed and dynamic characteristics of the tractor engine by power take off is presented. This loading device may also be ...