Evaluating energy evolution and damage in rice kernels under compressive loadings

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-09-11 DOI:10.1016/j.powtec.2025.121644

Weronika Kruszelnicka , Kingsly Ambrose , Janusz Kowal , Patrycja Walichnowska , Andrzej Tomporowski

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引用次数: 0

Abstract

Rice processing is characterized by high energy consumption and significant product losses due to kernel mechanical damage in the form of fissuring and breakage. The dependance of grain properties on many inherent and external factors makes it difficult to predict material damage. For this reason, detailed descriptions of the mechanisms of rice kernel breakage is scarce. The aim of this study is to deepen the knowledge about the rice kernel breakage mechanism under single and repeated compressive loadings, as affected by moisture content and grain size. Based on the experimental results, the mechanism of kernel weakening as the evolution of damage and the strain energy were identified. For damage evolution, a power function was proposed to describe the change in damage with the number of loading cycles. It was found that the rice kernel breakage behavior, especially the damage accumulation, resulting breakage probability and fatigue life, is dependent on the moisture content and kernel thickness. The presented study shows that the breakage of rice kernels can be predicted from the change in strain energy. The results from this work can be applied to improvement in rice processing and can significantly contribute to the reduction of material and energy losses.

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压缩载荷作用下米粒能量演化与损伤的评价

稻谷加工具有能耗高、产品损失大的特点，主要是稻谷断裂和破碎等机械损伤。晶粒性能对许多内在和外在因素的依赖使得材料损伤预测变得困难。因此，对稻粒破碎机理的详细描述很少。本研究的目的是加深对单次和多次压缩载荷下水稻籽粒破碎机制的认识，该机制受含水量和粒度的影响。根据实验结果，确定了核随着损伤的演化和应变能的变化而弱化的机理。对于损伤演化，提出了一个幂函数来描述损伤随加载循环次数的变化。研究发现，稻粒的破损行为，特别是损伤累积、破损概率和疲劳寿命与含水率和稻粒厚度有关。研究表明，可以通过应变能的变化来预测稻粒的断裂。这项工作的结果可以应用于改进大米加工，并可以大大有助于减少材料和能量损失。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.