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| International Agrophysics |
| wydawca: | Instytut Agrofizyki
im. B. Dobrzańskiego
PAN
w Lublinie |
| ISSN: |
0236-8722 |
vol. 24, nr. 1 (2010)
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poprzedni artykuł wróć do listy artykułów następny artykuł
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Selected physico-mechanical properties of lentil seed
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| (pobierz wersję PDF )
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H. Bagherpour, S. Minaei, M.H. Khoshtaghaza
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Department of Agricultural Machinery Engineering, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran |
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vol. 24 (2010), nr. 1,
pp. 81-84
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streszczenie
This study was conducted to investigate the physico-mechanical properties of lentil seed. The average diameter, thickness, thousand-grain mass, angle of repose and porosity of lentil seed increased by about 10, 8, 17, 10 and 6%, but both true and bulk density decreased by about 10 and 13%, respectively, with increase of moisture content from 8 to 20% w.b. Coefficient of static friction increased against surfaces of glass (by 31%), galvanized steel (by 33%), and plywood (by 17%) as the moisture content increased. Deformation, rupture energy and rupture force of lentil seed decreased with increasing moisture content. Compressive tests were conducted at loading rates of 1, 3, 6 and 10 mm min-1 at a moisture content of 8%. Results indicate that force required to crack the seed increased from 159.6 to 182.32 N as the loading rates increased from 1 to 10 mm min-1, respectively. With this increase in loading rate, seed deformation showed a negative trend as it decreased from 0.61 to 0.18 mm.
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słowa kluczowe
lentil seed, mechanical properties, loading rate
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