Friday, March 4, 2011

Ali Utku Gökçe-030060060-4th week

Repository Builder
In the design phase, components have to be constructed, catalogued and stored in a repository in such a way that they can be retrieved later, as and when needed. Components in the repository are in source sode, or they may have been compiled into binary.
Component here should be composed into well-defined composites using suitable composition operators, ideally supported by a composition theory. It should be also possible to store composites in, and retrieve the from the repository and use them for further composition, like any components.
A builder tool can be used to construct new components, and the deposit them in the repository,e.g, retrieve components from the repository, compose them and deposit them back in the repository,e.g, B and C are composedinto a composite BC that is deposited in the reprository.
(Component- based sofware engineering, Ivına Crnkovic, page276)

Manufacturing Development
Manufacturing development is an integral part of the new product development process. Often, a development occurs in a manufacturing vacuum, with the result that the new product might suffer lower than expected gross margin, or worse yet, might fail to capitalize on the market opportunity entirely.
An enterprise cannot add on, factor in at a later date, or ignore the manufacturing process and still reap teh rewards of the product investment. Manufacturing must be an integral process developed as part of the product. When factoring design cost, the manufacturing element represents a significant portion of the direct and indirect costs associated with the product. Failure to address the issue properly results in a nonoptimized situation.
(New Product Development: From İnitial Idea to Product Management, Marc A. Annacchiano, page333)

Production Control
Production control is the task of predicting, planning and scheduling work, taking into account manpower, material availability and other capacity restrictions, and cost so as to achieve proper quality and quantity at the time it is needed and then following up the schedule to see that the plan is carried out, using whatever systems have proven satisfactory for the purpose.
(Practical Production Control, Kenneth N. McKay, page29)

Cold Forging
Cold forging plants usually receive small-diameter material in coils and large-diameter stock in bars. IN very large-volume production, horizontal mechanical presses, called headers or upsetters, are used. The coil, coated with lubricant, is fed into the machine, where it is sheared and forged in several steps. In forging of relatively small production lots, vertical presses are used and individual billets are fed into the first die station. Billet volume or weight is closelly controlled, and it is desirable to obtain square billet faces during shearing or sawing.
In cold forging, the lubircant is required to withstand high pressures on the order of 280ksi(1930Mpa) in extrusion of steel, so as to avoid metal-to-metal contact between the tool and the extruded material. In cold forging of low-carbon and low-alloy steels, it is accepted practice to coat the surface of the billet or coil with a lubircant carrier.
(Cold And Hot Forging: Fundamentals And Applications, Taylan Altanpage214)

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