Aging Influence on Charpy Impact Behavior of Basalt Fiber Reinforced Epoxy Composites
- سال انتشار: 1392
- محل انتشار: مجله بین المللی طراحی پیشرفته و تکنولوژی ساخت، دوره: 6، شماره: 2
- کد COI اختصاصی: JR_ADMTL-6-2_009
- زبان مقاله: انگلیسی
- تعداد مشاهده: 262
نویسندگان
K.N. Toosi University of Technology South Tehran Branch, Islamic Azad University
K.N. Toosi University of TEchnology
Islamic Azad University
چکیده
Changes in moisture content and temperature can perturb both stiffness and strength and as such the impact resistance of composite structures. In this paper, the pre-notched basalt fibre reinforced epoxy (BFRE) composite specimens are studied under Charpy impact loads in order to investigate the changes in impact energy absorption (fracture toughness) with different kinds of aging conditions. To create three types of aggressive environmental conditions, the specimens were frozen in dried air at T= -۱۸ °C, frozen in tap water at T= -۱۸ °C and kept in tap water at T= ۳۰ °C and the results were compared with the specimen without aging influence (T= ۲۵ °C). Water used for this examination has a high percentage of precipitation (۷۰-۸۰%) which causes high corrosion and consequent decrease in mechanical properties. The outcomes illustrated that the long-term exposure to tap water (T= ۳۰ °C), dried air (T= -۱۸ °C) and frozen in tap water (T= -۱۸ °C) were all affected on energy absorption of BFRE composites, however, freezing effect in water was more intense. To study the nature of the failure mechanisms, all failed specimens were inspected by Scanning Electron Microscopy (SEM) photographs.کلیدواژه ها
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.