مطالعه رفتار بالستیکی پارچه کولار آغشته به سیال غلیظ‌شونده برشی حاوی افزودنی اکسید گرافن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

2 دانشگاه علم و صنعت ایران- دانشکده مهندسی مکانیک

3 گروه نانوفناوری، دانشکده فناوری های نوین، دانشگاه علم و صنعت ایران،تهران، ایران

چکیده

در این تحقیق تأثیر افزودنی اکسید گرافن در پارچه کولار دارای سیال غلیظ‌شونده برشی متشکل از پلی‌اتیلن گلایکول و سیلیکای کروی تحت بارگذاری بالستیک مطالعه شده است. برای درک بهتر تأثیر نمونه‌های مختلف از سیال غلیظ‌شونده برشی در عملکرد بالستیکی، آزمون بیرون‌کشی الیاف برای ارزیابی اصطکاک بین الیاف انجام شد. میزان افزایش انرژی در آزمون بالستیک برای پارچه دارای سیال غلیظ‌شونده برشی در مقایسه با پارچه ساده 25/8 درصد بود. افزودن اکسید گرافن به سیال غلیظ‌شونده برشی به اندازه 0/2 درصد وزنی سبب شد که میزان افزایش انرژی در مقایسه با پارچه ساده به 23/3 درصد تغییر کند، که این مقدار نشان از اثر تضعیف‌کنندگی اکسید گرافن دارد. نتایج آزمون بیرون‌کشی الیاف با نتایج آزمون بالستیک هماهنگ بود، بدین معنی که با مشاهده افزایش یا کاهش بیشینه نیرو در آزمون بیرون‌کشیِ الیاف، جذب انرژی در آزمون بالستیک به همان ترتیب افزایش یا کاهش می‌یافت. افزودن اکسید گرافن سبب کاهش بیشینه نیرو در مقایسه با نمونه سیال غلیظ‌شونده برشی در آزمون بیرون‌کشی شده که در نتیجه قیود حرکتی الیاف کاهش یافته و حرکت گلوله در پارچه تسهیل می‌شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A Study on the Ballistic Behavior of Kevlar Fabric Impregnated with Shear Thickening Fluid Containing Graphene Oxide Additive

نویسندگان [English]

  • Amirhosein Naghizadeh 1
  • Hadi Khoramishad 2
  • Maisam Jalaly 3
1 School of Mechanical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
2 School of Mechanical Engineering, Iran University of Science and Technology
3 Nanotechnology Department, School of Advanced Technologies, Iran University of Science & Technology (IUST), Tehran, Iran
چکیده [English]

In this research, the effects of graphene oxide as an additive to Kevlar fabric impregnated with nanosilica/polyethylene glycol shear thickening fluid on the ballistic performance were investigated. In order to understand the influence of shear thickening fluid, pull-out tests were accomplished to assess the friction between yarns. The energy absorption in the high-impact ballistic test for the fabric impregnated with shear thickening fluid increased by 25.8% compared to that for the neat Kevlar fabric. This parameter for the fabric impregnated with shear thickening fluid-0.2 wt.% graphene oxide was 23.3% as compared with that of the neat fabric, demonstrating the deteriorating effect of graphene oxide additive. The results of the pull-up tests were in agreement with ballistic tests, meaning that the increase or decrease in the maximum forces in pull-up tests was followed by the increase or decrease in the energy absorption in ballistic tests. Compared to the sample impregnated with shear thickening fluid, adding graphene oxide causes the decrease in the maximum force in the pull-up test, resulting in a reduction in restriction of yarns movement, consequently facilitating their movement inside the fabric.

کلیدواژه‌ها [English]

  • Shear thickening fluid
  • Graphene oxide
  • Kevlar
  • Ballistic

مراجع

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نشریه مهندسی مکانیک امیرکبیر
دوره 53، شماره 12
اسفند 1400
صفحه 5725-5738

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