This preview shows page 1. Sign up to view the full content.
Unformatted text preview: nce by a Structural relation. 4 QUANTITATIVE APPROACH BY KEY CHARACTERISTICS In a complex product, it is not economically or logistically feasible to control and/or monitor thousands of tolerances and processes. To identify what tolerances and processes to control, many organizations are using a Key Characteristics method (KCs) [Thornton, 1999]. KC methods are used by design to identify and communicate to manufacturing where excess variation will most significantly affect product quality. Most KCs approaches are based on the concept of a KC flowdown. The KC flowdown prides a system view of potential variation risk factors and captures designers and manufacturers knowledge about variation and its contributors. A hierarchical tree structure is commonly used to describe the Key Characteristics of a product [Thornton, 1999]. A KC flowdown allows for a decomposition of the product into essential features and processes – enabling traceability of cause and effect. Figure 6 shows a KC flowdown. Product level KCs are identified at the highest level of the flowdown and are product...
View Full Document
This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.
- Spring '10
- The Land