Akademik Veri Yönetim Sistemi
ICHEAS 8th INTERNATIONAL CONFERENCE ON HEALTH, ENGINEERING AND APPLIED SCIENCES, Rome, İtalya, 15 - 17 Kasım 2024, ss.216-221
The purpose of crash boxes is to protect the vehicle and its occupants in possible accidents by preserving vehicle integrity. It performs this process thanks to its energy absorption ability. The higher energy absorption ability, the better protection it provides. Crash boxes, which are generally made of metallic materials, create extra weight for vehicles. Therefore, studies on crash boxes focus on composite materials that are lighter and have as good mechanical properties as metallic materials. Research focuses on many shapes such as square, conical, hexagonal, cylindrical and origami. On the other hand, there are studies on the effect of the type of fiber used, the effect of hybridization, and the addition of filler material. The production method is also an important factor in composite materials. Composite materials are generally produced by hand lay-up, filament winding or vacuum infusion methods. In our study, solutions regarding the difficulties encountered during the production phase of vacuum infusion method fiber-reinforced epoxy resin matrix composite crash boxes are included. The difficulties encountered are primarily the presence of templates with the geometry to be produced. The production was carried out by selecting metal and cardboard as templates. However, the metal templates provided a good hybridization with the fibers and provided a solid hybrid composite material. Although corrugated cardboards were first wrapped around the metal templates to solve this problem, problem was not solved, the vacuum infusion method affected the thin structure of the cardboard, provided very good adhesion to the metal and prevented tubes from coming out after production. The problem was then solved by wrapping a thicker corrugated pipe. After the vacuum infusion process and curing were completed, the cardboard was dissolved by immersion in water and shaped composite tubes were produced. In the production of cylindrical tubes, a cardboard core was used as a template, and after the specification process, the cardboard was dissolved and only the sample remained.