在准静态和冲击负荷条件下,甜菜根组织的粘弹性反应
Paweł Kołodziej1, Krzysztof Gołacki1, Zbigniew Stropek1
1Department of Mechanical Engineering and Automation, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-950 Lublin, Poland.
Sensors (Basel, Switzerland)
|June 27, 2025
概括
这项研究研究了新鲜和储存的甜菜在不同冲击速度下的机械性能. 结果显示放松时间和反应力的显著变化,突出显示储存和变形速度对根组织行为的影响.
科学领域:
- 农业工程 农业工程
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
背景情况:
- 了解根蔬菜的机械特性对于优化收获,储存和加工技术至关重要.
- 之前的研究已经探索了根作物的纹理特征,但各种条件下对冲击行为的综合数据仍然有限.
- 储存时间和温度对根组织机械完整性的影响需要进一步研究.
研究的目的:
- 评估新鲜和储存的甜菜 (Beta vulgaris) 在不同变形速度下的准静态和冲击机械反应.
- 分析甜菜根组织在不同冲击速度下的压力放松行为和反应力.
- 为了确定20°C保存120小时对甜菜的机械性能的影响.
主要方法:
- 准静态压缩测试使用质量计进行.
- 撞击测试使用带有控制撞击速度 (0.001至1.25米/秒) 的悬摆式装置进行.
- 压力放松 (T1和T2) 和反应力 (Fp) 参数测量了新鲜和储存的甜菜样本.
主要成果:
- 随着新鲜和储存的根的冲击速度的增加,放松时间 (T1) 显著减少.
- 低变形速度 (0.001-0.02 m/s) 的T1值最高,高速度 (0.75-1.25 m/s) 的T1值最低.
- 反应力 (Fp) 通常随着冲击速度的提高而增加,新鲜的根比储存的根表现出更高的力,特别是在高速时.
结论:
- 储存大大改变了甜菜的机械反应,导致放松时间和反应力比新鲜根更短.
- 冲击速度是影响甜菜机械行为的关键因素,较高的速度会导致更明显的应力松和反应力增加.
- 这些发现为设计有效的甜菜收获后处理和加工系统提供了宝贵的见解.
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