تعیین خواص فیزیکی و مکانیکی کلم‌قمری

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان

1 عضو هیئت علمی، گروه مهندسی کشاورزی، دانشگاه فنی و حرفه‌ای، تهران، ایران.

2 استادیار، گروه فناوری کشاورزی، پردیس ابوریحان، دانشگاه تهران، تهران، ایران.

چکیده

در این پژوهش، برخی از خواص فیزیکی، ثقلی و مکانیکی نوعی از کلم قمری به نام قنبید، اندازه‌گیری و بررسی شد. نتایج خواص فیزیکی نشان داد که میانگین‌های قطر بزرگ، قطر میانی، قطر کوچک، میانگین حسابی قطر، میانگین قطر هندسی، سطح و ضریب کرویت در کلم قمری (قنبید) به‌ترتیب  mm87،  mm57/82،  mm71/72،  mm76/80،  mm45/80، cm234/8، 922/0 هستند. نتایج خواص ثقلی نشان داد که میانگین‌های چگالی توده، چگالی واقعی و تخلخل، به‌ترتیب  33/280، 76/928 و 69% به‌دست آمدند. آزمایش­های خواص مکانیکی نشان داد که میانگین‌های تنش گسیختگی، کرنش گسیختگی، ضریب الاستیسیته، میزان چقرمگی، ضریب اصطکاک غلتشی و ضریب اصطکاک لغزشی این گیاه به‌ترتیب برابر MPa 12/1، 25/0 ، MPa 24/4، mJ/mm2 658/0، 05/0 و 64/0 هستند. نتایج حاصل از این پژوهش می‌تواند در طراحی ماشین‌آلات مورداستفاده در عملیات برداشت، انتقال، جداسازی، درجه‌بندی، شستشو، کیفیت‌سنجی، نگهداری، فراوری و بسته‌بندی مواد غذایی کاربرد فراوانی داشته باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Determination of Physical and Mechanical Properties of Lunar Cabbage

نویسندگان [English]

  • Mani Ghanbari 1
  • Masoud Dehghani Soufi 2
1 Faculty Member, Department of Agricultural Engineering, Technical and Vocational University (TVU), Tehran, Iran.
2 Assistant Professor, Department of Agrotechnology, College of Abouraihan, University of Tehran, Tehran, Iran.
چکیده [English]

In this study, some physical, gravitational and mechanical properties of a type of lunar cabbage called Ghonabid were measured and evaluated. The results of the physical properties showed that the averages of large diameter, middle diameter, small diameter, arithmetic mean diameter, mean geometric diameter, surface area and spherical coefficient of lunar cabbage were 87 mm, 82.57 mm, 72.71 mm, 80.76 mm, 80.45 mm, 8.34 cm2, 0.922, respectively. The results of gravity properties showed that the averages of mass density, real density and porosity were 280.33 kg/m3, 928.76 kg/m3 and 69%, respectively. The mechanical properties evaluation tests showed that the averages of fracture stress, fracture strain, elasticity coefficient, degree of toughness, rolling friction coefficient and sliding friction coefficient of this plant were 1.12 MPa, 0.25, 4.24 MPa, 0.658 mJ/mm2, 0.05 and 0.64 in the order mentioned. Findings of this research can be widely applied in the design of machinery used in harvest, transfer, separation, grading, washing, quality inspection, maintenance, processing and food packing operations.

کلیدواژه‌ها [English]

  • Physical properties
  • Gravity properties
  • Mechanical properties
  • Lunar cabbage

مراجع

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فصلنامه علمی کارافن
دوره 18، شماره 4 - شماره پیاپی 56
کشاورزی / هنر و معماری
بهمن 1400
صفحه 133-144

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سابقه مقاله

  • تاریخ دریافت: 09 آذر 1399
  • تاریخ بازنگری: 19 دی 1399
  • تاریخ پذیرش: 24 بهمن 1399

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