Sustainability, Manufacturing processes, New product development, Prototype research, Decision making, and Laser sintering
The integration and quickness between the phases of product development process are key elements for companies' competitiveness and the prototyping technologies provide relevant means for the development of new products. The prototyping of products by additive manufacturing can vary in quality, costs, materials and characteristics, however, incorporating environmental and sustainable attributes are important strategies to support the design for manufacturing. This paper proposes method for multi-attribute evaluation of prototyping technology associated with sustainable product conception. This proposal focuses on improving the decision-making process and provide the prioritization of technical characteristics and it was evaluated and validated, through case studies, applying selective laser sintering and fused deposition modelling technologies into two prototype developments: a bristles protector (lightweight composite product) and a toothbrush (single massive product). The research innovates by proposing a matrix that allows the inclusion of environmental and sustainable features in the design decision-making process, promoting the integration of multiple perspectives that involves customer, product and technology associated with sustainable concepts meeting the current demand of the society and companies for the development of sustainable products. [ABSTRACT FROM AUTHOR]
Ameta, Gaurav, Mani, Mahesh, Rachuri, Sudarsan, Feng, Shaw C., Sriram, Ram D., and Lyons, Kevin W.
International Journal of Sustainable Engineering. Dec2009, Vol. 2 Issue 4, p241-251. 11p.
Manufacturing processes, Carbon, Materials analysis, Industrial engineering, and Rapid prototyping
The objective of this research paper is to explore and develop a new methodology for computing carbon weight (CW) - often referred to as carbon footprint, in manufacturing processes from part level to assembly level. In this initial study, we focused on machining operations, specifically turning and milling, for computing CW. Our initial study demonstrates that CW can be computed using either actual measured data from process level information or from initial material and manufacturing process information. In mechanical design, tolerance analysis principles extend from design to manufacturing and tolerances accumulate for parts and processes. By extending this notion to CW, we apply mechanical tolerancing principles for computing worst case and statistical case CW of a product. We call this the CW tolerance approach (CWTA). Two case studies demonstrate the computation of CW. Based on the tolerance allocation concepts; CW allocation is also demonstrated through specific redesign examples. CWTA helps in identifying carbon intensive parts/processes and can be used to make appropriate design decisions. [ABSTRACT FROM AUTHOR]
Polychlorinated biphenyls, Manufacturing processes, Organochlorine compounds, Polychlorinated dibenzodioxins, Polychlorinated dibenzofurans, Time to market (New products), Rapid prototyping, and Brand name products
Monsanto produced two distinct variants of Aroclor 1254. The late-production variant resulted from a change in Monsanto''s manufacturing process in the early 1970s. Previous literature had reported that the late-production variant was produced from 1974 to 1976, but subsequent work has identified a sample known to be obtained in 1972. In this paper, we present congener-specific PCB and PCDD/F data for this 1972 late-production sample, and a brief historical record of late-production Aroclor 1254. [Copyright &y& Elsevier]
Kai Zhao, Posselius, John, Pai, Suresh, and Jin, Jishan
Resource: Engineering & Technology for a Sustainable World. Sep2006, Vol. 13 Issue 7, p5-6. 2p. 2 Diagrams.
Manufacturing processes, Prototypes, Simulation methods & models, New product development, Multidisciplinary design optimization, and Engineering design
This article focuses on the use of virtual prototyping and testing by engineers at Case New Holland in simulating the working of mechanical systems to optimize designs. Optimizing products in the early stage of their development, reducing product development cost and cycle time, reducing product cost, increasing product reliability and improving product functionality are the major advantages of virtual prototyping. The most important advantage is that simulations allow companies shift their product investment to an earlier stage of the development process.