Journals / ÇOMÜ Ziraat Fakültesi Dergisi / 2020 / Cilt: 8 - Sayı: 1

Determination of Some Physico-Mechanical Properties of Lettuce Seed

Marul Tohumunun Bazı Fiziko-Mekanik Özelliklerinin Belirlenmesi

Pages
89–97
Publication Date
2020-07-14
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

According to the results, the averages length, width and thickness of lettuce seeds with a moisture content of 8,09% d.b. were measured as 3,36 mm, 0,84 mm and 0,54 mm, respectively with a projected area of 2,79 mm2.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The physico-mechanical properties of lettuce seeds are essential for the design of equipment for harvesting, transporting, cleaning, separating, packing, seed coating, storing and processing.
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Key Findings & Data:According to the results, the averages length, width and thickness of lettuce seeds with a moisture content of 8,09% d.b. were measured as 3,36 mm, 0,84 mm and 0,54 mm, respectively with a projected area of 2,79 mm2.
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Conclusion & Impact:In addition, the static response angle was 22,55º and the shelling resistance was found as 1,29 kg.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Marul tohumu · porozite · kritik hız

Abstract

The physico-mechanical properties of lettuce seeds are essential for the design of equipment for harvesting, transporting, cleaning, separating, packing, seed coating, storing and processing. The aim of this study was to determine some physico-mechanical properties of lettuce seeds. The geometric, gravimetric, aerodynamic, and mechanical properties and friction characteristics of lettuce seeds were obtained. According to the results, the averages length, width and thickness of lettuce seeds with a moisture content of 8,09% d.b. were measured as 3,36 mm, 0,84 mm and 0,54 mm, respectively with a projected area of 2,79 mm2. The sphericity of lettuce seeds was calculated as 0,34. The thousand grain of mass, bulk density, true density, volume, and porosity of lettuce seeds were measured as 1,09 g, 0,463 g cm-3, 1,153 g cm-3, 0,871 cm3, and 59,84%, respectively. The terminal velocity was measured as 3,46 m s-1. The static coefficient of friction was measured on four different surfaces, namely, stainless steel, aluminium, plywood and rubber. The results were found to be 0,198, 0,278, 0,346 and 0,352, respectively. The dynamic angle of repose of lettuce seeds was specified as 20,33°, 18,99°, 20,34° and 21,05° on same surfaces. In addition, the static response angle was 22,55º and the shelling resistance was found as 1,29 kg.

Özet

Marul tohumlarının fiziko-mekanik özellikleri; hasat, taşıma, temizleme, ayırma, paketleme, tohum kaplama, depolama ve işleme ekipmanlarının tasarımı için önemlidir. Bu çalışmada marul tohumunun bazı fiziko-mekanik özelliklerinin belirlenmesi amaçlanmıştır. Bu amaç doğrultusunda marul tohumlarının geometrik, gravimetrik, aerodinamik, sürtünme ve mekanik özellikleri belirlenmiştir. Ölçüm sonuçlarına göre %8,09 (kuru bazda) nem içeriğine sahip marul tohumlarının uzunluk, genişlik ve kalınlık ortalamaları sırasıyla 3,36 mm, 0,84 mm ve 0,54 mm, projeksiyon alanı 2,79 mm2 olarak ölçülmüş ve küresellik 0,34 olarak hesaplanmıştır. Marul tohumunun bin dane ağırlığı 1,09 g, yığın hacim ağırlığı 0,463 g cm-3, gerçek hacim ağırlığı 1,153 g cm-3, hacmi 0,871 cm3, porozitesi %59,84 olarak belirlenmiştir. Kritik hız değeri ise 3,46 m s-1 olarak ölçülmüştür. Statik sürtünme katsayısı paslanmaz çelik, alüminyum, kontrplak ve kauçuk olmak üzere dört farklı yüzeyde ölçülmüş olup sonuçlar sırasıyla 0,198, 0,278, 0,346 ve 0,352 olarak bulunmuştur. Marul tohumunun dinamik yığılma açısı alüminyumda 18,99°, paslanmaz çelikte 20,33°, kontrplakta 20,34° ve kauçukta 21,05° olarak elde edilmiş, statik yığılma açısı 22,55º ve kabuk kırılma direnci ise 1,29 kg olarak belirlenmiştir.

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Cite This Article

ÇEKİM, İ., ÖZARSLAN, C. (2020). Determination of Some Physico-Mechanical Properties of Lettuce Seed. ÇOMÜ Ziraat Fakültesi Dergisi, Cilt: 8 - Sayı: 1, 89–97. https://ajindex.com/articles/483496

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