Deternination of Engineering Properties of Chickpea Grain

راسخ, منصور and افكاري سياح, امير حسين and عسكري اصلي ارده, عزت‌الله (2012) Deternination of Engineering Properties of Chickpea Grain. University of Mohaghegh Ardabili.

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Abstract

In this research some of physical and mechanical properties of chickpea were determined as a function of moisture content. The results showed that moisture content has significant effect on the physical properties such as length, volume, width, thickness, arithmetic mean diameter, projected area, geometric mean diameter, thousand seed mass, angle of repose and bulk density (p< 0.01), and has no significant effect on the true density, prosity and sphericity. As the moisture content increased from 7.05 to 11.5% (wet basis) length, width, thickness, geometric mean diameter, projected area, volume, thousand seed mass, angle of repose and aritmatic mean diameter increased, while bulk density decreased. The interaction effect of moisture content × surface type has significant effect (p< 0.01), on static coefficient of friction. Also, the results showed that moisture content have a significant effect (p< 0.01) on all mechanical properties. By increasing moisture content from 7.05 to 11.5% (wet basis) rupture energy, toughness and deformation at rupture point increased from 148.8 to 721 mJ, 0.58 to 2.562 and 0.473 to 2.058 respectively. while rupture force was decreased from 809.7 to 666.4 . By increasing the seed size, the deformation at rupture point, rupture force, rupture energy and toughness were increased. The triple interaction effect of loading velocity × seed size × moisture content was not significant on the all mechnical properties.

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