Saturday, March 5, 2011

Osman Pehlivanoğlu 030040089 4th Week

QFD Chart
QFD is a methodology for quality planning and quality assurance.
The main working chart of QFD is the so-called "House of Quality". The chart documents clearly the translation of customer requirements (referred to as the "what"), which are often vaguely formulated, into technical requirements (also referred to as target requirements or the "how") of the product to be developed. The roof of the house shows if the technical requirements interrelate with each other and the strength of any interrelationship. The matrix in the middle of the chart shows the interrelationship between the customer requirements and the technical requirements. Weighting factors can be added to the customer requirements, as well as an estimation of competing products from the point of view of customer. Underneath the central matrix, target values for the technical requirements are plotted along with a technical assessment of competing products (benchmark). At the very bottom the weighted values (priorities) of the technical requirements are listed.(Engineering Design, Third Edition, Pahl&Beitz&Feldhusen&Grote, p531)

Dependent Demand
Dependent Demand (or derived demand) items are those components that are become part of some parent item or in some similar way become part of a set of components. Dependent demand inventories typically are consumed within the production system, not by some outside demand. Materials requirements planning (MRP) adn just in time (JIT) inventory management are two methods for managing derived demand inventories. (Financial Management, Third Edition, Shim&Siegel, p241)

Autonomation
The principle of autonomation is to install a device to detect an abnormality and shut down a machine or operation. The system is designed for detection and shutdown before the machine, jig or tooling is damaged, or unsafe condition exists, so it can run again as soon as the source of the problem is fixed. Further it must not produce defects, and send them down the line, or at least holds such action to a minimum. finally, the autonomation should make the problem clear and how to fix it obvious. (The End of Project Overruns, Patty&Denton, p345)

Value Engineering
Value engineering is the systematic review of a project, product, or process to improve performance, quality, and/or life-cycle cost by an independent multidisciplinary team of specialists. It is the focus on the functions that the project, product, or process must perform that sets VE apart from other quality-improvement or cost-reduction approaches. (Value Engineering Applications in Transportation, Transportation Research Board, p1)

No comments:

Post a Comment