Principles of As-Built Engineering

Abstract

Customized product realization allows piece parts to be assembled in an optimum way. For example, striving to optimize design parameters during production by either manufacturing or assembling one part to compensate for design deviations present in another part of the assembly. This approach minimizes rejected parts in production because it provides a way to use parts that normally would have been scraped. It also maximizes part reuse in post-production by providing a logical way to determine what optimal piece parts to use in an assembly from an inventory of possible piece parts.As-Built Engineering provides a methodology for fully characterizing the enduring stockpile. This not only allows for optimally assembled systems and enhanced analysis simulations based on actual product characteristics, but also allows for the monitoring of an assembly's maturation. All post-production activities involving a product would be defined and captured in an as-built model. This has implications in both Surety and Surveillance. As-built models contain the high fidelity product information that can be used for maintenance, simulations, quality assurance, and design analysis.Benefits of As-Built Engineering include the following: 1. can be implemented without effecting mission critical activities, 2. is robust and allows new processes, technologies, and equipment to be introduced into a product realization infrastructure in a quantifiable manner, 3. provides a way to characterize product information that in turn allows assembly optimization -both during production and in post production. 4.For archival and surveillance, allows a methodology for knowing what you have so that changes in a product can be measured. 5. provides high fidelity product representations that can be used as input into emerging analysis and simulation tools being envisioned by ASCI. These high fidelity representations accurately describe each individual assembly and thus provide a basis for measuring aging and application effects. AbstractAs-Built Engineering is a product realization methodology founded on the notion that life-cycle engineering should be based on what is actually produced and not on what is nominally designed. As-BuiltEngineering is a way of thinking about the product realization process that enables customization in mass production environments. It questions the relevance of nominal based methods of engineering and the role that tolerancing plays in product realization. As-Built Engineering recognizes that there will always be errors associated with manufacturing that cannot be controlled and therefore need to be captured in order to fully characterize each individual product's unique attributes. One benefit of As-Built Engineering is the ability to provide actual product information to designers and analysts enabling them to verify their assumptions using actual part and assembly data. Another benefit is the ability to optimize new and reengineered assemblies. Princ@als ofAs-Built Engineering Cmter for Advanced Engineering Technology LA...