بررسی تاثیر نحوه توزیع حرارت بر عملکرد محرک نرم سیلیکون-اتانول

نوع مقاله : علمی و پژوهشی

نویسندگان

گروه مهندسی متالورژی و علم مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد، مشهد، ایران.

چکیده

در پژوهش حاضر یک ربات نرم کامپوزیتی با استفاده از سیلیکون به عنوان زمینه و اتانول به عنوان ماده تغییرفازدهنده ساخته شد. هدف از ساخت این ربات نرم، ایجاد عملکرد کرنشی در ربات است. با توجه به این‌که مکانیزم فعال‌سازی ربات سیلیکون-اتانول، جذب حرارت توسط اتانول و ایجاد فشار بخار در زمینه سیلیکون و درنتیجه‌ی آن، کرنش است؛ بنابراین تاثیر یکنواختی توزیع حرارت در کامپوزیت بر سرعت پاسخدهی آن مورد بررسی قرار گرفت. نتایج این پژوهش با استفاده از تست تحریک الکتریکی، وزن سنجی با ترازو، تصویربرداری از ریزساختار توسط میکروسکوپ الکترونی(FESEM) و پردازش تصاویر مربوط به جابه‌جایی نمونه‌ها توسط نرم افزار متلب، نشان داد شرایط توزیع حرارت در کامپوزیت سیلیکون-اتانول در سرعت عملکرد و طول عمر کامپوزیت بسیار با اهمیت است. نمونه با قطر سیم‌پیچ 1 سانتی‌متر (برابر با 34درصد حجمی از نمونه که داخل سیم‌پیچ قرار گرفته به حجم کل نمونه) دارای ثبات عملکردی در طی سیکل‌های مختلف در زمان عملکرد بود. اختلاف دماهای مرکز و سطح نمونه برابر حدود ℃21 بود و میانگین زمان پاسخدهی طی سه روز کاری برابر با 161 ثانیه به دست آمد. برای نمونه با قطر سیم‌پیچ 8/0 سانتی‌متر میزان اختلاف دمای سطح و مرکز 25℃ و میانگین زمان پاسخدهی طی سه روز کاری 165 ثانیه بود. در نمونه با قطر سیم‌پیچ 5/0 سانتی‌متر میزان اختلاف دمای سطح و مرکز 95℃و میانگین زمان پاسخدهی طی سه روز کاری، 143 ثانیه اندازه‌گیری شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the Effect of Heat Distribution on the Performance of Silicone-Ethanol Soft Actuator

نویسندگان [English]

  • samane sahebian
  • mahboubeh Ghasemzadeh namaghi
  • mohsen haddad sabzevar
  • hojjat Zamyad
Department of Materials Science and Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.
چکیده [English]

In the present study, a composite soft robot was constructed using silicon as the matrix and ethanol as the phase change material. the activation mechanism of the silicon-ethanol robot is the absorption of heat by ethanol and the creation of vapor pressure in the silicon matrix and, as a result, strain; therefore, the effect of the uniformity of heat distribution in the composite on its response speed was investigated. The results of this study, using electrical excitation testing, weighing with a balance, imaging of the microstructure by FESEM, and processing of images related to the displacement of the samples by MATLAB software, showed that the heat distribution conditions in composite are very important in the speed and life of the composite. The sample with a coil diameter of 1 cm (equal to 34% of the volume of the sample placed inside the coil to the total volume of the sample) had stable performance during different cycles during operation. The difference in temperature between the center and surface of the sample was approximately 21C, and the average response time over three working days was 161s. For the sample with a coil diameter of 0.8cm, the difference in temperature between the surface and the center was 25C, and the average response time over three working days was 165 seconds. For the sample with a coil diameter of 0.5 cm, the difference in temperature between the surface and the center was 95C, and the average response time over three working days was 143s.

کلیدواژه‌ها [English]

  • soft actuator
  • silicone
  • phase change material
  • heat transfer

مراجع

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