Philosophy Essay Example | Topics and Well Written Essays - 750 words - 27

Philosophy - Essay Example ble in the sense that it does not label any theories wrong, but treats all assumptions and viewpoints, even the most controversial ones, as possible and justified. The notion of philosophy and the search for wisdom are closely associated with ethical behaviors and metaphysics. That the value of ethics is metaphysical cannot be denied: ethical statements and prescriptions are equally absolute, constraining, and metaphorical, i.e., they are difficult to explain by factual language. In my opinion, the metaphysics of ethics assigns individuals with the responsibility to follow the principal ethical commands without trying to understand the philosophic utility of these ethical standards. Simply stated, the philosophy of life is in complying with the society’s ethical demands, without looking too far into their distant meanings and effects. Here, I cannot but agree to Wittgenstein in that ethics is a road which everyone must go or be ashamed for not going, but the meaning of such a road can hardly be explained, as long as it lies beyond the realm of explicable things (7). Whether we have more knowledge than the ancients is a complex issue. We live at the time of the rapid technological and knowledge advancement and sometimes come to view ourselves as the people, who know (or can know) everything about anything. However, there are still things which we cannot explain. More importantly, most of our knowledge is rooted in the facts, theories, and opinions produced by our predecessors. Objectively, there are things which were available to the ancients but are unavailable to us, and there are things of which previous generations were unaware. The point is in being able to value, preserve, enrich, and use the knowledge of the ancients to build a more systematic vision of the world – the goal any philosopher seeks to pursue. In this context of ethics, metaphysics, and philosophy, the question is in what place God occupies and whether God must be moral and happy. Some

Fibre Reinforced Plastics Essay Example | Topics and Well Written Essays - 3000 words

Fibre Reinforced Plastics - Essay Example These set of additions impart a new identity to the composite in terms of heat resistance, strength and stiffness. Individually the mechanical properties of these additives might not be of an appreciable value but on combining to form a composite matrix these properties are magnified. The ultimate mechanical property of the composite of course depends upon the manner in which these fibres are arranged in the matrix and the manufacturing method followed in producing the composite. Both these applications; Aerospace and Formula-1 deal with mechanisms to reduce the weight of the body and increase the aerodynamic profile of the surface. These functions would ultimately define the fuel efficiency and the speed of the aircraft or the Formula-1 car. (Cripps David, 2000) Research currently being undertaken seeks to refine the existing manufacturing processes to reduce the weight of the composite further but at the same time maintaining structural integrity. Advantages of using FRP 1. This of fers a wide range of corrosion resistance over acids, chlorides and other oxidizers. 2. Since its offer no galvanic potential it negates the requirement of sacrificial anodes for cathodic protection. (The composite advantage, 2004) 3. The strength to weight ratio is quite large. 4. It can operate over a wide range of temperatures; from low temperature cryogenic temperature applications to high temperatures in the range of 350 to 400? F. (The composite advantage, 2004) 5. It provides safe working environment as it is fire resistant. 6. The inherent nature of the material and the adaptability of the manufacturing process make it suitable for creating large complex shapes in situ. 7. Both the installation costs and maintenance costs are lower. (The composite advantage, 2004) The Manufacturing Process There are number of manufacturing processes that are used in producing Fibre Reinforced Plastics. These include the 1. Hand Lay-Up process 2. Spray Lay-Up process 3. Vacuum Bagging 4. Fila ment Winding 5. Pultrusion However the manufacturing process that is usually used in the manufacturing of components and structural parts of aircrafts and F1 racing cars include the following (Cripps David, 2000) 1. Resin Transfer Molding (RTM) 2. Vacuum Assisted Resin Transfer Moulding (VARTM) 3. Prepegs 4. Resin Film Infusion. (RFI) 1. Resin Transfer Moulding (RTM) - This is a closed moulding process done under low pressure. The volume of composite produced is somewhere between that generated in a contact moulding process and that of a compression moulding process. The strands of reinforcement that is completely dried out are neatly arranged in the lower part of the mould. Glass reinforcements of various shapes can also be used along with the fiber matrix to ensure that complex mould shapes can be generated. Source: Cripps David, 2000, Reinforced Transfer Moulding The mating part or the upper portion of the mould is then closed onto the bottom half of the bold leaving a cavity whi ch eventually takes the shape of the structure this process is trying to manufacture. The thermosetting resin is then injected into this cavity space. It is necessary to ensure that sufficient amount of this resin is used to avoid the formation of voids, cavities or edge imperfections caused due to low quantity of resin. (Rice Brian and Lee William, n.d ) To assist in this filling process and guarantee that all areas of this cavity are filled, vacuum can be used which draws the resin to all parts of the cavity and ensures a perfect fill. This process is also known as the Vacuum Assisted R