Product design for manufacture assembly geoffrey boothroyd, winston knight, peter Dewhurs(BookZZ org)

... order to allow assembly of the sensor, and therefore none of the three criteria are met and the strap becomes a candidate for elimination For the strap a zero is placed in the column for minimum ... PCB assembly to the connector were not necessary (Fig 3.36) Design so that access for assembly operations is not restricted: Figure 3.41 shows two alternative design concepts...

Ngày tải lên: 30/09/2014, 16:11

... 11 4 11 6 11 8 11 8 11 9 11 9 12 0 12 0 12 1 12 2 12 5 12 6 12 6 12 7 12 7 12 8 13 1 13 2 13 5 13 5 13 7 13 9 14 1 14 1 14 2 14 5 14 5 14 7 14 7 Part II—Methodological Statement Product Design and Development Process 7 .1 ... 8 .1 Table 8.2 Table 9 .1 Table 9.2 Table 10 .1 Table 11 .1 Table 11 .2 Table 11 .3 Table 11 .4 Table 11 .5 Table 11 .6 Tabl...

Ngày tải lên: 11/08/2014, 21:21

... relation to all these phases, in accordance with a design intervention based on a life cycle approach, understood as a systematic approach “from the cradle to the grave,” the only approach able ... LLC 27 22_ C0 02_ r 02. indd 54 12/ 1 /20 05 11:30 :21 AM Life Cycle Approach and the Product System Concept and Modeling FIGURE 2. 8 55 Phases of product manufa...

Ngày tải lên: 11/08/2014, 21:21

... methodological approaches, such as the integrated approaches intended to combine the two analyses, environmental and economic The most important of these integrated approaches are Activity-based LCA and ... definition and inventory analysis Requirements and a structure for a data documentation format, to be used for transparent and unambiguous documentation and exchange of LCA an...

Ngày tải lên: 11/08/2014, 21:21

... Economic–Environmental Approach in Life Cycle Management An integrated LCCA–LCA is fully qualified for inclusion within the scope of the approach to the integrated management of the life cycle known as Life Cycle ... Kumaran, D.S et al., Environmental life cycle cost analysis of products, Environmental Management and Health, 12(3), 260 –2 76, 2001 Murayama, T et a...

Ngày tải lên: 11/08/2014, 21:21

... necessary for its production and commercialization The decision variables are those that can influence the planning and organization of the different design and development activities (the organization ... final product Ramp-up is then followed by a phase of transition toward actual production and the definitive launch of the product on the market As shown in Figure 7. 1,...

Ngày tải lên: 11/08/2014, 21:21

... Increase ease of disassembly MATERIALS Reduce unsustainable and hazardous materials Increase biodegradable and low-impact materials Reduce material variety Increase material compatibility and ... appropriate tools of the DFX system are introduced 8. 2 Environmental Strategies for the Life Cycle Approach Design strategies play an essential role in the life cycle approach...

Ngày tải lên: 11/08/2014, 21:21

... those aimed at maintaining performance during the phase of use Design for Serviceability (DFS) (Makino et al., 198 9; Gershenson and Ishii, 199 3; Subramani and Dewhurst, 199 3) and Design for Maintainability ... toward the planning of processes at the end-of -life They belong to the general area of Design for Product Retirement/Recovery (Ishii et al., 199 4; NavinChandr...

Ngày tải lên: 11/08/2014, 21:21

... (nucleated) later as a result of strain 10. 3.1 Definition of Ductile Damage and Damage Parameter The parameter used for the analytical measurement of damage is the percentage ratio of the area (or ... Methods for Product Duration Design and Evaluation 259 diagrams like these, it can be seen that the various curves show a decrease on the y-axis for an increase on th...

Ngày tải lên: 11/08/2014, 21:21

... the overall evaluations In a first analysis, the terms of intermediate and overall evaluation could be based on a qualitative evaluation of the determinant factors for each strategy A quantitative ... functional performances This chapter presents a method for Life Cycle Design, focusing on the analysis of strategies extending the useful life (maintenance, repair,...

Ngày tải lên: 11/08/2014, 21:21

... and thermal loading As an example, Figure 12. 6 shows some results of the stress and thermal analyses on the disk These FEM analyses were calibrated on the basis of experimental data available ... Conference, Miami, FL, 1991, DE-31, 119 125 Pré, SimaPro Database Manual: The BUWAL 250 Library, Pré Consultants BV, Amersfoort, The Netherlands, 2003 Sawaragi, Y., Nakayama, H., and Tani...

Ngày tải lên: 11/08/2014, 21:21

... potential for reuse, remanufacturing, and the recycling of materials (Navin-Chandra, 1993; Navin-Chandra, 1994; Zussman et al., 1994; Pnueli and Zussman, 1997) These approaches all use graphic ... 14. 2 As was suggested in Chapter 12, information on the recyclable fractions of the more common materials may be obtained from commercially available databases, such as that of the mat...

Ngày tải lên: 11/08/2014, 21:21

... determining variables required for the behavior under examination to take place (initial state) and final conditions reached after the function has taken place (final state), and of the performance characteristics ... values assumed by BCI for each behavior on varying the design parameters allows an analysis of the criticality of the system under examination 16. 3.3 Analysis...

Ngày tải lên: 11/08/2014, 21:21

... Assembly Automation and Product Design: Second Edition, Geoffrey Boothroyd Assembly Automation and Product Design Second Edition Geoffrey Boothroyd Boothroyd Dewhurst, Inc Wakefield, Rhode Island ... Assembly Automation and Product Design Second Edition MANUFACTURING ENGINEERING AND MATERIALS PROCESSING A Series of Reference Books and Textbooks SERIES...

Ngày tải lên: 14/08/2015, 22:41