A material is described as a composite material if it is comprised of two or more constituents either in combination of phases or distinct phases. The materials are bonded along the interface of the composite. The constituents of the composite originate from separate ingredient materials which make up the composite.
Another nomenclature involves the use of reinforcement in classification where polymers may be classified into fibers (multifilament, monofilaments, short filaments and long filaments), skeletons or particles.
Polymer matrix composite comprises of carbon, glass or other high strength fibers bonded by a thermoset or thermoplastic resin. The materials resulting from this bond is stiff, very strong and is able to withstand corrosion. Among the inherent advantages especially to manufacturing and machining is that the PMC assume flat, sharply sculptured contours or curved surfaces with ease. The materials are also very cheap. PMC materials are used as an option to steel.
As mentioned earlier, polymer materials are comprised of the fiber and the matrix, the main fuction of the matrix material is to surport and surrounds the reinforcement fiber. It also aids in maintaining the fiber in position. The reinforcement materials impacts special mechanical and physical properties to the matrix material. Due to the availability of different fiber and matrix materials, the material engineer can select different materials for fiber and the matrix thus enhance the resulting polymer composite material.
Commercially available polymer matrix materials are also refereed to as resin solutions. ...
The strength of the composite polymer material depends upon the ratio of fiber and the matrix material. Generally as the fiber content increases the strength also increases. Some of physical properties of these materials are that there are orthotropic and not isotropic. This means that their strength depends on the direction of the application of the force. It has been found out that PMC stiffness depends upon the applied force and load. This is in contrast with metallic materials that are generally isotropic meaning that they have the same stiffness irrespective of the orientation of the applied force. Repeated shock, impacts and other cyclic stresses can cause the material to separate between two layers. This condition is called delamination. Composites have also be found to fail both at a macroscopic and microscopic scale, the material are subjected to composite buckling, which causes crushing of the material. The material can also fail in tension due to a pulling force. Other polymer composites have been found to be brittle and have limited strengths. The strength of the composite material depends upon individual material properties, the size and distribution of the fiber and the composite, the volume fraction of individual composite materials. The shape of the constituents' materials and the nature of the interface between the fiber and the matrix
Among the inherent properties of polymer composites includes high strength and stiffness, high temperature stability as compared to their individual components, low density, high corrosion resistance and low surface wear. Polymer materials can be divided into two main categories, these include the short fiber reinforced polymer materials and continuous fiber reinforced ...
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(“Polymer and Metal Matrix Composites Essay Example | Topics and Well Written Essays - 2750 words”, n.d.)
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(Polymer and Metal Matrix Composites Essay Example | Topics and Well Written Essays - 2750 Words)
“Polymer and Metal Matrix Composites Essay Example | Topics and Well Written Essays - 2750 Words”, n.d. https://studentshare.net/technology/293994-polymer-and-metal-matrix-composites.
Due to the large stiffness to weights ratio and strength to weight ratio aluminium and titanium have been the used predominantly for the past several years.( Aitchison Leslie, 1924) However of late, composite materials have found increased acceptability since this causes a saving of 30 to 40 percent in weight compared to aluminium and titanium.
The durability of any material in its production has been a crucial aspect; a factor that calls for eventual upgrading of the raw materials. The enhancement of glass and PMC has been effected by altering their physical properties through the optical and thermal properties enhancement (Brydson, 1999).
They are for making devices that are used to replace some part or function of the body such that it is reliable, safe, and economical and physiologically accepted (Pruitt 2011). Examples of biomaterials those devices used in injury and disease treatment such as suture needles, plates and teeth fillings.
Making material choice remains an essential element for enhancing proper functioning of the structure, upon construction. The selection process for materials follows analysis of the functions for the proposed structure being constructed. The functions determine the required material strength among other properties; hence selection of material meeting structural requirements (Jones 1975).
The brake disc operates in a way such that when the brake pedal is pressed by the driver, a force is transferred by the push rod through the brake booster on to the hydraulic master cylinder. This hydraulic master cylinder is responsible for conversion of this force in to a hydraulic pressure which is transmitted via the brake fluid, the connecting pipes and hoses to the piston at each brake caliper.
One part must be a metal and other part being any other materials like organic compounds. If we look at metal matrix composite composition structure, we can say that they are made by dispersing a reinforcing material into a metal matrix. Usually the surface is coated to prevent chemical reaction with matrix.
Aircraft designing and all new generation aircrafts are the outcome quintessential efforts in the field of designing as well as in the material necessary for the manufacturing of the aircrafts. In earlier phases of aircraft engineering, the development of better models was greatly affected by the lack of corresponding development in the materials needed for the construction of these models.
It’s a wonder that during this accident there were not many victims. The cause of the accidents was rapid decompression, which happened because 24,000 feet section of the fuselage tore from the airplane /Miller, 1990/.
In spite of not numerous victims this air
This implies that fibre reinforced polymers are gradually replacing metals in various industries due to their inherent advantages over metals as indicated below.
The use of fibre reinforced composite materials in the vehicle industry offers