A plm implementation for aerospace systems engineering-conceptual rotorcraft design

The thesis will discuss the Systems Engineering phase of an original Conceptual Design Engineering Methodology for Aerospace Engineering-Vehicle Synthesis. This iterative phase is shown to benefit from digitization of Integrated Product&Process Design (IPPD) activities, through the application of Product Lifecycle Management (PLM) technologies. Requirements analysis through the use of Quality Function Deployment (QFD) and 7 MaP tools is explored as an illustration. A "Requirements Data Manager" (RDM) is used to show the ability to reduce the time and cost to design for both new and legacy/derivative designs. Here the COTS tool Teamcenter Systems Engineering (TCSE) is used as the RDM. The utility of the new methodology is explored through consideration of a legacy RFP based vehicle design proposal and associated aerospace engineering. The 2001 American Helicopter Society (AHS) 18th Student Design Competition RFP is considered as a starting point for the Systems Engineering phase. A Conceptual Design Engineering activity was conducted in 2000/2001 by Graduate students (including the author) in Rotorcraft Engineering at the Daniel Guggenheim School of Aerospace Engineering at the Georgia Institute of Technology, Atlanta GA. This resulted in the "Kingfisher" vehicle design, an advanced search and rescue rotorcraft capable of performing the "Perfect Storm" mission, from the movie of the same name. The associated requirements, architectures, and work breakdown structure data sets for the Kingfisher are used to relate the capabilities of the proposed Integrated Digital Environment (IDE). The IDE is discussed as a repository for legacy knowledge capture, management, and design template creation. A primary thesis theme is to promote the automation of the up-front conceptual definition of complex systems, specifically aerospace vehicles, while anticipating downstream preliminary and full spectrum lifecycle design activities. The thesis forms a basis for additional discussions of PLM tool integration across the engineering, manufacturing, MRO and EOL lifecycle phases to support business management processes.M.S.Committee Chair: Schrage, Daniel P.; Committee Member: Costello, Mark; Committee Member: Wilhite, Alan, W

Development of a manufacturing engineering system for the motor industry : executive summary

Manufacturing Engineering is concerned with converting a product specification into the most appropriate method of manufacture to produce the product to the correct cost and quality. Lack of integration and 'over the wall' engineering between design and manufacturing engineering adds to the time and cost of product development, and has significant effects on the subsequent cost and quality of the product. Because of the size and complexity of manufacturing engineering within the motor industry, the task is often divided between disparate, isolated, departments that traditionally have their own goals and objectives, supported by different business processes and systems. The adverse effects of the lack of integration between design and manufacturing engineering re-emerge within manufacturing engineering itself. As a part of this research, the author analysed the existing information flows through manufacturing engineering within Rover Group, and showed that the business processes and systems generated a high duplication of effort and data, and reinforced functional demarcation between the departments. The new Rover Integrated Manufacturing Engineering System (RIMES) has been developed to address these issues. RIMES has been developed using TQM techniques and evolutionary delivery, new to Rover, to involve the manufacturing engineering customer in all aspects of business analysis and system development. The resultant system deliverables have therefore more closely met the customer requirements and have consequently been implemented with greater customer support. The subsequent changes to manufacturing engineering culture have been promoted from within manufacturing engineering, with the RIMES system acting as a lever for the change. The research has been primarily concerned with the analysis and development of appropriate solutions in three main areas: integration of design and manufacturing engineering, change control procedures to maintain data integrity, and business processes to improve efficiency of manufacturing engineering and the quality of its output. These are all issues that are important for supporting concurrent engineering but were found not to have been adequately addressed, either in the research literature or in commercial systems, for applications involving large, complex products. The new system provides support for the electronic integration of design and manufacturing engineering information, which is based on a technique developed that combines data 'push' and 'pull' principles, and enables the efficient communication of product specification to manufacturing engineering. It provides a single system and repository of manufacturing engineering knowledge, a common fundamental business process, and a common and consistent way of presenting manufacturing engineering information and reports. Concurrent engineering is promoted through early availability of information for downstream processes and strict change control procedures have been developed to maintain data integrity. The previously disparate departments of process engineering and industrial engineering are now working concurrently from the same data which has improved the accuracy, consistency and understanding of information both internally and in external reporting. The time to market has been reduced because product specification information is provided earlier and simultaneously to all manufacturing engineering functions. The manufacturing engineering process and its output have been redesigned. New working methods introduced through the RIMES system have promoted reorganisation and the elimination of demarcation within manufacturing engineering to further facilitate concurrent engineering. Newly designed multi media forms for communication of process information to manufacturing, developed in consultation with the RIMES user community, has promoted team working on the shop-floor

Input variable selection in time-critical knowledge integration applications: A review, analysis, and recommendation paper

This is the post-print version of the final paper published in Advanced Engineering Informatics. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. Copyright @ 2013 Elsevier B.V.The purpose of this research is twofold: first, to undertake a thorough appraisal of existing Input Variable Selection (IVS) methods within the context of time-critical and computation resource-limited dimensionality reduction problems; second, to demonstrate improvements to, and the application of, a recently proposed time-critical sensitivity analysis method called EventTracker to an environment science industrial use-case, i.e., sub-surface drilling. Producing time-critical accurate knowledge about the state of a system (effect) under computational and data acquisition (cause) constraints is a major challenge, especially if the knowledge required is critical to the system operation where the safety of operators or integrity of costly equipment is at stake. Understanding and interpreting, a chain of interrelated events, predicted or unpredicted, that may or may not result in a specific state of the system, is the core challenge of this research. The main objective is then to identify which set of input data signals has a significant impact on the set of system state information (i.e. output). Through a cause-effect analysis technique, the proposed technique supports the filtering of unsolicited data that can otherwise clog up the communication and computational capabilities of a standard supervisory control and data acquisition system. The paper analyzes the performance of input variable selection techniques from a series of perspectives. It then expands the categorization and assessment of sensitivity analysis methods in a structured framework that takes into account the relationship between inputs and outputs, the nature of their time series, and the computational effort required. The outcome of this analysis is that established methods have a limited suitability for use by time-critical variable selection applications. By way of a geological drilling monitoring scenario, the suitability of the proposed EventTracker Sensitivity Analysis method for use in high volume and time critical input variable selection problems is demonstrated.E

Kajian Peningkatan Pendapatan Pengrajin Gula Kelapa di Desa Purbosari Kecamatan Seluma Barat Kabupaten Seluma

Coconut sugar is one commodity that has potential importance in the composition of the food in the community. Viewed in terms of quality, the quality of the products are still not equal among the producers. This causes the bargaining position of producers becomes weak and coconut sugar prices tend to be low. Seluma Regency especially Western Seluma District has fertile lowland areas and is one of the main producers of coconut sugar precisely in Purbosari village. This study aimed to determine the income level and income-raising efforts of coconut sugar producers in the Purbosari village, Western Seluma District, Seluma Regency. Location of the study was set intentionally (purposive). Data taken in this study were derived from the primary data (interviews) and secondary data (through literature). This study used survey method and the method of selecting the sample in this study was calculated using census. The data analysis used in this study were a quantitative and qualitative analysis. Quantitative analysis was used to calculate the income of coconut sugar producers and qualitative analysis conducted through a descriptive approach. Based on the research discovered that the average income of coconut sugar producers was Rp715.569,60 per week / 40 trees. Common difficulties faced by coconut sugar producers were capital, production engineering, business management and marketing network. Seluma local governments can play a role in efforts to increase the income of coconut sugar producers by providing them with capital, appropriate technology, improved knowledge of entrepreneurship and innovation, as well as business management assistance