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- 저자 : Barbara Linke (검색결과 4 건)
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Establishing Greener Products and Manufacturing Processes
Barbara Linke,Yu-Chu Huang,David Dornfeld 한국정밀공학회 2012 International Journal of Precision Engineering and Vol. No.
Today producers are becoming more responsible for their products, not only because of legal requirements but also to gain a competitive edge, as consumers are increasingly considering the broader impacts of their purchases. As a result,companies are beginning to address the ecological impacts of products and manufacturing processes in addition to the economic considerations. The environmental impact of products can be reduced during manufacturing, e.g. by greener processes, greener process chain, or leveraging manufacturing. This paper reviews actual research on greening products and production at the University of California, Berkeley and lays the foundation for future research directions. The present research includes approaches to enhance Life Cycle Assessment Methods, understand the life cycle of different products,improve manufacturing processes and revise supply chain decisions. Leveraging manufacturing implies higher environmental burden in the production phase can be offset with much larger eco-efficiency in the product use phase. The described approaches present ongoing work and will support sustainable production practices.
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Establishing Greener Products and Manufacturing Processes
Linke, Barbara,Huang, Yu-Chu,Dornfeld, David 한국정밀공학회 2012 International Journal of Precision Engineering and Vol.13 No.7
Today producers are becoming more responsible for their products, not only because of legal requirements but also to gain a competitive edge, as consumers are increasingly considering the broader impacts of their purchases. As a result, companies are beginning to address the ecological impacts of products and manufacturing processes in addition to the economic considerations. The environmental impact of products can be reduced during manufacturing, e.g. by greener processes, greener process chain, or leveraging manufacturing. This paper reviews actual research on greening products and production at the University of California, Berkeley and lays the foundation for future research directions. The present research includes approaches to enhance Life Cycle Assessment Methods, understand the life cycle of different products, improve manufacturing processes and revise supply chain decisions. Leveraging manufacturing implies higher environmental burden in the production phase can be offset with much larger eco-efficiency in the product use phase. The described approaches present ongoing work and will support sustainable production practices.
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Design and Development of a High Efficiency Air Turbine Spindle for Small-Part Machining
Paul Harris,Michael Wintterer,David Jasper,Barbara Linke,Christian Brecher,Stephen Spence 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.7 No.5
This paper reports on the development of a high efficiency and low inertia miniature pneumatic turbine for ultra-high-speed manufacturing spindle applications. It is proposed that radial-inflow/axial-outflow type turbines are well suited for micromachining spindles. To validate the turbine performance potential, a proof-of-concept prototype turbo-spindle was developed and experimentally tested. The prototype spindle produced a net mechanical power output of over 60 W at a speed of 90,000 rpm. The experimental results demonstrate a micro-turbine efficiency of over 50% and a turbine power output of approximately 100 W. This compares to a typical turbine efficiency of around 20% in commercial micro-machining spindles. Further potential improvements to both turbine and spindle energy efficiency are outlined.
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Sustainability in Ultra precision and Micro machining: A Review
Frank Schneider,Jayanti Das,Benjamin Kirsch,Barbara Linke,Jan C. Aurich 한국정밀공학회 2019 International Journal of Precision Engineering and Vol.6 No.3
Ultra precision and micro machining processes become more and more important. This can be led back to the development of functionalized surfaces and parts and the mass production of smaller products e.g. lenses for personal devices. With increasing application and distribution, the importance of sustainability in these processes also increases. In this paper, an overview of ultra precision and micro machining in a system approach is given and the most decisive input parameters are elaborated. Included are general findings and current issues of process design with regard to the economic, environmental and social dimension of sustainability. Finally, it is discussed how the sustainability of ultra precision and micro machining can be increased and for which class of products certain strategies are recommended.
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