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Record 25 of 101
Influence of Design Variations on Systems Performance
Author and Affiliation:
Tumer, Irem Y.(NASA Ames Research Center, Moffett Field, CA United States)
Stone, Robert B.(Missouri Univ., Dept. of Basic Engineering, Rolla, MO United States)
Huff, Edward M.(NASA Ames Research Center, Moffett Field, CA United States)
Norvig, Peter [Technical Monitor]
Abstract: High-risk aerospace components have to meet very stringent quality, performance, and safety requirements. Any source of variation is a concern, as it may result in scrap or rework. poor performance, and potentially unsafe flying conditions. The sources of variation during product development, including design, manufacturing, and assembly, and during operation are shown. Sources of static and dynamic variation during development need to be detected accurately in order to prevent failure when the components are placed in operation. The Systems' Health and Safety (SHAS) research at the NASA Ames Research Center addresses the problem of detecting and evaluating the statistical variation in helicopter transmissions. In this work, we focus on the variations caused by design, manufacturing, and assembly of these components, prior to being placed in operation (DMV). In particular, we aim to understand and represent the failure and variation information, and their correlation to performance and safety and feed this information back into the development cycle at an early stage. The feedback of such critical information will assure the development of more reliable components with less rework and scrap. Variations during design and manufacturing are a common source of concern in the development and production of such components. Accounting for these variations, especially those that have the potential to affect performance, is accomplished in a variety ways, including Taguchi methods, FMEA, quality control, statistical process control, and variation risk management. In this work, we start with the assumption that any of these variations can be represented mathematically, and accounted for by using analytical tools incorporating these mathematical representations. In this paper, we concentrate on variations that are introduced during design. Variations introduced during manufacturing are investigated in parallel work.
Publication Date: Jan 21, 2000
Document ID:
20010076482
(Acquired Aug 31, 2001)
Subject Category: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
Document Type: Preprint
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA United States
Organization Source: NASA Ames Research Center; Moffett Field, CA United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: DESIGN ANALYSIS; COMPONENT RELIABILITY; AEROSPACE SYSTEMS; MANUFACTURING; FAILURE ANALYSIS; TAGUCHI METHODS; SUBASSEMBLIES; SAFETY
Availability Source: Other Sources
Availability Notes: Abstract Only
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