Composite Tests

Composite Tests

Laboratory-scale production and performance tests of composite parts can be performed in our laboratory. Fiber reinforced composite materials that can be produced in autoclave capable of performing computer controlled fully automatic curing cycles are subjected to various tests and reported in the same laboratory.

At least two different materials formed by combining the new material in macro dimensions is called composite material. The purpose of composite production is to add new properties to make non-suitable, insoluble materials insoluble materials that can provide suitable properties for their application areas. The need for materials resulting from developing technology and industrialization has led to the discovery and development of composite materials. Composite materials are a very valuable group of materials which are called as chemistry of the future. I found remarkable researches done on the world composites, this article begins with, along with a brief description of the composite containment, composite industry in Turkey, in new technologies, Nasa space studies and an article covering R & D activities and their use on composites in Defense Industry The series is planned.

Air conditioning test cabinet
Optical microscope system
Ultraviolet air conditioning cabinet
Foulard machine
(autoclave device)
Dynatup 9250hv
Dynatup 8150

ASTM D-3763: Drilling of rigid plastics
ASTM D-256: Charpy
ASTM D-6110: Izod
ISO 179: Charpy
ISO 180: Izod
ASTM E-23: Charpy and Izod
NASA ST-1: Damage resistance of composites

In order to obtain a material having certain desirable properties, the new material which is formed by combining two or more materials whose properties and chemical components are different from each other and which cannot be macro-insoluble within each other is called composite material. For a better understanding, a detailed description is made. Any composite material meeting these requirements is called composite. For this reason, a wide range of composite materials can be examined. However, it should be noted that not all composite materials are composite. For example, alloys are not composite. Because it consists of metals fused together in a macro sense. A material can be cross-sectioned to see if it is composite. Bronze is an alloy formed by combining copper and tin and has a homogeneous property. The human body, from the outermost layer to the inside; It is a composite of skin, fibers, blood, muscles, bone, layers of bone and marrow. Concrete, vehicle wheel and tennis ball are also composites.

Composite materials are composed of two components.

Matrix Material (Polymer, metal and metal alloy, ceramic based materials)
Reinforcement Material (Steel, carbide, aramid, nylon etc.)

Composites generally have their strength from hard and brittle reinforcing materials. Matrix materials, on the other hand, give the composite toughness and ductility. The task of holding the materials together is also the matrix material.

Due to the high strength and lightness of the composite material, its usage area is wide.
Composite materials consist of matrix and reinforcing material. Reinforcement carries load and increases strength. The matrix has the task of holding the reinforcement.

Composites are classified as metal matrix, plastic matrix and ceramic matrix composites. As metal matrix material; Aluminum, titanium and magnesium are the most commonly used metals. As plastic matrix material; epoxy, polyethylene, polypropylene. As the ceramic matrix material; alumina, silica, barium alumina silicate.

Defense industry

As the composite technology developed in the world, the use of the technology in the defense industry increased. Composite materials are important in this sector because they can be made more durable and lighter than the constituent components by various combinations. By taking advantage of this situation, composite armor was developed and applied to armor which is indispensable of defense industry.

Aerospace Technology and Aviation Sector

When we look at the composite usage areas, we see that there is a wide range of applications in the aviation industry. It is used in interior design and production of structural materials in airplanes and helicopters based on superior mechanical properties of composite materials compared to their light weight.

Compressor Blades, Body, Interior Hardware: B / Al, SiC / Al, Gr / Al
Turbine Blades: Wolfram and Tantalum reinforced materials.
Helicopter Parts: B / Al, SiC / Al, Gr / Al, Gr / Mg, Al2O3 / Mg, Al2O3 / Al

Construction Sector

Materials with different internal structures are used in the building sector and their internal structures must have the desired properties. The service life is also very important for this sector. Therefore, the material structure must be produced in accordance with the conditions under which the material is to be applied. Facade guards, holiday homes, kiosks, bus stops, cold storage, construction molds are composite material applications. The design is flexible and easy, providing great advantages in transport and installation.

For example, hollow and dense material for strength and water impermeability, filled for sound impermeability and thermal insulation
the material must be produced with voids of the required quantity and size to provide sound absorption and reduce heat conduction.

Automotive industry

The purpose of composite use in the automotive sector is to lighten the skeleton of the vehicle and to increase impact resistance. Based on the fluid dynamics, the acceleration time from the vehicle and the fuel efficiency may also vary according to the use of the composite material.

Wiper; % 30 Glass + PBT
Filter box; Mercedes,% 35 Glass + Polyamide 66
Pedals; % 40 Glass + Polyamide 6
Rearview Mirror; % 30 Glass + ABS
Headlight Housing; BMW,% 30 Cam + PBT
Air Intake Manifold; BMW, Ford, Mercedes, 30% Glass + Polyamide 6
Automobile Instrument Panel; GMT
Automobile Spoiler; CTP
Automobile Side Body Frame; Ford, CTP
Car Bodywork; Corvette, SMC GRP

Transportation Sector

Tractor bodywork, cabin, seating unit; SMC
Public transport seating unit; SMC
Bus ventilation ducts, luggage compartment parts, instrument panel; CTP
Open area shuttle (golf cart) cars bonnet, roof; CTP
Container base; GMT (Pressable reinforced thermoplastic)
Cable car; CTP

Health sector

Another area in which composite is widely used is health. In orthopedics, composite material is used as internal and external connection system for fractured bone repair. In dentistry, composite resins are used as tooth fillers and collagen fiber reinforced epoxy resin is used as dental support materials. In addition, orthodontic wires; They are made of glass fiber reinforced nylon, polypropylene, polymethylmethacrylate. As the bridge, polymethylmethacrylate composites reinforced with collagen, glass or kevlar are used because of their low cost and easy preparation.

Other Uses of Composite

Robot Technology
Chemical Industry
Electrical and Electronics Technology
Musical Instrument Industry
Food and Agriculture Sector
Manufacture of Sporting Goods (high jump poles, tennis rackets, surfing, racing boats, skiing, etc.)

High-speed trains are subjected to very high pressures due to wind. There is also a high risk of birds hitting the glass. Therefore, the glass of the train should be made of material that can resist these forces. Wind turbines, military boots, bulletproof vests, airplane wings, gas turbines, heat exchanger tubes and many other areas are also in demand. New developments are taking place in ships, military vehicles and weapons and new materials are needed.

Today, composites are considered to be the only material group that provides all these properties. Since composites are a widely used material with developing technology, R & D studies are continuing on this material in many countries. In our country, our engineers' research and studies on composite materials are promising. Boron is a common metal for use in composite materials. Approximately% 75 of the world boron reserve is also in our country. For example; boron carbide is an indispensable material for bulletproof vests. Furthermore, one of the rare fibers that can be used in the metal matrix is ​​boron fiber. However it is expensive.

In short, the fact that they have a higher strength / density ratio than other materials, in other words, being more durable and light, is the biggest feature that makes composites valuable.