علوم و فناوری کامپوزیت

بررسی مقاومت به ضربه پانل ساندویچی با رویه بازالت و رویه هیبریدی بازالت-کولار با لحاظ نانو سیلیکا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، مهندسی مکانیک، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران

2 استادیار، مهندسی مکانیک، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران

چکیده

در این مقاله تاثیر نانو سیلیکا بر مقاومت به ضربه پانل‌های ساندویچی با رویه بازالت و پانل‌های ساندویچی با رویه هیبریدی بازالت و کولار بررسی شده است. پانل‌های ساندویچی با رویه بازالت شامل چهار لایه پارچه بازالت به عنوان رویه بالایی و پایینی که هسته فوم بین آن قرار دارد. پانل ساندویچی با رویه هیبریدی از چهار لایه پارچه بازالت/کولار/کولار/بازالت به عنوان رویه بالایی و پایینی ساخته شده که هسته فوم ما بین آنها قرار دارد. از پارچه‌های کولار با چگالی 200 گرم بر متر مربع، پارچه بازالت با چگالی 350 گرم بر متر مربع، فوم پلی اورتان با چگالی 140 گرم بر سانتی متر مربع، رزین اپوکسی EPR1080 و درصدهای وزنی مختلف نانو سیلیکا برای ساخت نمونه‌های پانل ساندویچی استفاده شده است. فرآیند ساخت نمونه‌های آزمایش با روش لایه‌گذاری دستی انجام گرفت. همچنین برای پخش و توزیع بهتر ذرات نانوسیلیکا در ماتریس اپوکسی از دستگاه آلتراسونیک استفاده شد. آزمایش‌های ضربه سرعت پایین با استفاده از دستگاه وزنه افتان با انرژی ضربه ثابت بر روی نمونه‌ها انجام گردید. نتایج نشان داد افزودن نانو به پانل ساندویچی سبب بهبود مقاومت به ضربه می‌شود و بیشترین نیروی تماسی ماکزیمم مربوط به پانل ساندویچی با 1/1% نانوسیلیکا می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

An investigation of impact resistance of sandwich panel with basalt skin and basalt/Kevlar hybrid skin with nano silica

نویسندگان [English]

  • Mohsen Hafezi 1
  • Mehdi Yarmohammad Tooski 2

1 Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.

2 Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.

چکیده [English]

In this paper, the effect of nano silica on impact resistance of sandwich panels with basalt skin and hybrid sandwich panel with basalt and kevlar skin is investigated. Sandwich panels with a basalt skin consist of four layers of basalt fabric as the top and bottom skins which the foam core is located between them. Sandwich panels with a hybrid skin consist of four layers of basalt/Kevlar/Kevlar/basalt fabric as the top and bottom skins which the foam core is located between them. Kevlar fabrics with a density of 200 g /m2, basalt fabrics with a density of 350 g /m2, a polyurethane foam with a density of 140 g/cm2, EPR1080 epoxy resin and different weight percentages of nano silica were used to make sandwich panels. All panels are fabricated using Hand Lay-up method. Ultrasonic device was also used for homogenization and better dispersion of nano silica in epoxy matrix. Low velocity impact tests were performed using drop weight equipment at constant impact energy on the specimens. The results showed that the addition of nano into the sandwich panel improved the impact resistance and the maximum contact force is related to the sandwich panel with 1.1% nano silica.

کلیدواژه‌ها [English]

  • Hybrid sandwich panel
  • nano silica
  • Low velocity impact
  • Kevlar
  • basalt
مراجع
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علوم و فناوری کامپوزیت
دوره 7، شماره 4
اسفند 1399
صفحه 1145-1152
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