先进的拉伸试验作为一种新的工具来量化食品的特性
Miek Schlangen1, Erik Schlangen2, Atze Jan van der Goot1
1Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA, Wageningen, the Netherlands.
Current research in food science
|September 11, 2023
概括
先进的拉力测试可以提高对异型食物性质的理解. 优化标尺长度和变形速率,以及数字图像相关性,提高了分析机械行为和断裂力学的准确性.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 食品的机械性能对于产品质量和加工至关重要.
- 不同类型的食品,像肉类类似物一样,表现出复杂的机械行为.
- 传统的抗拉性测试可能无法完全捕捉这些材料的细微差别.
研究的目的:
- 探索对异构型食品的先进拉伸性测试技术.
- 调查拉力测试参数 (尺寸长度,变形速率) 对机械性能解释的影响.
- 为了利用数字图像相关性进行精确的断裂分析.
主要方法:
- 对基于大豆的同otropic 和 anisotropic 产品进行拉伸测试.
- 多种尺寸长度 (8.517.5毫米) 和变形速率 (11.646.2毫米/分钟).
- 数字图像相关性 (DIC) 用于真距离测量和应变分析.
主要成果:
- 较短的标尺长度和较慢的变形速率改善了对异性产物力-距离曲线的分析.
- 在优化条件下,性测量更准确,避免因裂快速传播而过度估计.
- DIC揭示了异型产品中的不均菌株分布与异型产品中的均分布.
- 来自DIC的Poisson比率突出了结构和可塑性差异.
结论:
- 精心选择拉力测试参数对于准确的机械性能评估至关重要.
- 数字图像相关性显著提高了断裂力学和应变分布的测量.
- 先进的拉力测试和DIC提供了对异构型食品材料的行为更深入的见解.
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