تعیین مدل ویسکو الاستیک میوه نارنج در خلال انبارمانی به کمک پردازش تصویر

نویسندگان
فاطمه کاظمی کرجی1 1
سامان آبدانان مهدی زاده 2
1 دانشجوی کارشناسی ارشد دانشکده مهندسی‌ زراعی و عمران روستایی، گروه مکانیک بیوسیستم، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، خوزستان، شهرستان باوی، شهر ملاثانی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
2 استادیار دانشکده مهندسی‌ زراعی و عمران روستایی، گروه مکانیک بیوسیستم، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
چکیده
خصوصیات مکانیکی میوه از مهم­ترین پارامتر­های تعیین­کننده استاندارد­های مناسب برای طراحی، تبدیل­، پردازش و سیستم­های بسته­بندی به شمار می­روند. یکی از روش­های بیان تغییرات ساختار داخلی در میوه­ها در خلال انبارمانی، انجام آزمون­های آسایش تنش در کرنش­های مختلف و از پیش تعیین شده است. لذا هدف از این پژوهش بررسی رفتار تراکمی نارنج در بار­گذاری مکانیکی نیمه استاتیک با انجام آزمایشات تنش آسایشی نمونه­ها در سطوح مختلف کرنش و مدلسازی روش ماکسول و پلاژ و مقایسه آن با روش پردازش تصویر در نظر گرفته شد. بعلاوه در این پژوهش تغییرات سطح مقطع هنگام بارگذاری با کمک پردازش تصویر اندازه­گیری شد. مدول الاستیسیته در روش پردازش تصویر، مدل ماکسول و پلاژ در روز­های یکم تا نهم، به ترتیب، از 91/3 تا 5/4، 6/3 تا 53/4 و 7/2 تا 45/3 افزایش یافت که علارغم روند افزایشی اختلاف معنی­داری میان آن­ها مشاهده نگردید. با توجه به عدم اختلاف معنی­داری خروجی این دو مدل (ماکسول و پلاژ) از آنجایی که در مدل پلاژ نسبت به مدل ماکسول تعداد عناصرکمتری در مدل­سازی نیاز دارد (تنها دو ثابت) محاسبه مدول الاستیسیته آسان­تر صورت­ پذیرفت.
کلیدواژه‌ها
نارنج
مدل ویسکو الاستیک
بینایی ماشین
انبارمانی

موضوعات

عنوان مقاله English

Determination of Viscoelastic model of sour orange during storage using image processing

نویسندگان English

Fatemeh Kazemi Karaji 1
Saman Abdanan Mehdizadeh 2
1 MSc student of Mechanics of Biosystems Engineering Department, Faculty of Agricultural Engineering andRural Development, Khuzestan Agricultural Sciences and Natural Resources University. Khouzestan,
2 Assistant professor of Mechanics of Biosystems Engineering Department, Faculty of Agricultural Engineering and Rural Development, Khuzestan Agricultural Sciences and Natural Resources University.
چکیده English

The mechanical properties of fruit are one of the most important determinants of standards for designing, transforming, processing, and packaging systems. One of the methods for changesdemonstraction in the internal structure of fruits during storage is to perform stress relaxation tests in different predetermined strains. Therefore, the purpose of this study was to investigate the orange compression behavior in quasi-static mechanical loadings by performing stress-relaxation tests of samples at predetermined levels of strain and modeling the Maxwell and Peleg method and comparing it with image processing method. In addition, in this study, cross-sectional area changes were measured during loading by image processing. The modulus of elasticity in the image processing method, the Maxwell model and the Peleg model on days 0 to 9 increased from 3.91 to 4.5, 3.6 to 4.53 and 2.7 to 3.45, respectively. which in spite of increasing trend there was no significant difference between them Since, no significant difference in the output of these two models (Maxwell and Peleg) was observed Peleg with the less number of elements (only two constants) was preferred compared to Maxwell method

کلیدواژه‌ها English

Sour orange
Viscoelasticity Model
Computer Vision
Storage
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