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Researches of liquid contaminants influence on change of hardness of agricultural tyre tread
degradation hardness Shore A tread
2015/5/18
Tyres represent the only element which connects a vehicle with a roadway and they are one of the most important parts of the vehicle. Investigated samples from chosen agricultural tyres were placed in...
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...
米饭硬度自动测量系统设计(Design of Automatic Measurement System of Cooked Rice Hardness)
米饭粒 硬度 测量系统 设计
2010/2/26
提出了一种基于机械力学测量手段建立米饭粒硬度自动测量系统的方法,阐述了该方法的基本原理、自动测量系统的组成和操作运行。通过试验说明,该系统测量米饭粒力-变形曲线的斜率能够适应稻米品质评定中对硬度指标的量化测试要求,且与使用食味计检测得出一致的结论。 The rice hardness is one of the most important qualification to scale the r...