Composite Materials

For composite materials used fibers and fabrics of various types: fiberglass, Kevlar, carbon fiber, which are sometimes reinforced with metal mesh. The second component of the composite – a binding material: fabric can be pre-saturated with them, it can be applied manually or automatically. As a binder used polyurethane, epoxy resins or thermoplastics with various additives. Binders determine characteristics of the finished product by about 10%. Their choice depends on the balance of functionality, price, production technology and operating conditions. Differences between composite and thermoplastic shells – in price, weight products and production volumes. Shell of thermoplastic stamped under pressure in molds which are very expensive. Shell made of composite materials made by matrix, which is much cheaper.

However, processes is mainly carried out manually, and the cost of raw materials is much higher. In addition, production is less, it also defines a higher price products from the composite. The inner layer of the helmet is made as Typically, foam with the addition of various additives. It can be constant or variable density, sometimes consists of several parts. The problem of the inner layer – shock of sharp accelerations. Process designing a new helmet begins primarily with materials selection and definition of the market that will target the product. First made sketches, then the phase of modeling clay. For finished models are made geometric measurements, which are made shtampy.Etot traditional way is very risky, then it all depends on work experience, allowing "the eye" to assess the form, select required thickness of material to the helmet correctly performed their functions.