LEADER 00000nam  2200337   4500 
001    AAI1429067 
005    20070720071326.5 
008    070720s2005                        eng d 
020    9780542363115 
035    (UMI)AAI1429067 
040    UMI|cUMI 
100 1  Karania, Ruchi P 
245 10 Analysis of plastics manufacturing processes for low 
       production quantities 
300    74 p 
500    Source: Masters Abstracts International, Volume: 44-03, 
       page: 1505 
500    Supervisor: David O. Kazmer 
502    Thesis (M.S.Eng.)--University of Massachusetts Lowell, 
520    Plastic products manufacturing is one of the largest 
       industrial activities in the US. Today's marketplace is 
       very fast paced with many products having a much shorter 
       life than ever before. While injection molding is the most
       common process for economically producing complex designs 
       in large quantities, a large initial monetary investment 
       is required to develop appropriate tooling, which may not 
       be appropriate for applications with low production 
520    Component cost and lead-time models are developed for an 
       electrical enclosure from extensive industry data 
       potentially manufactured by a variety of low to medium 
       volume manufacturing processes including direct 
       fabrication, fused deposition modeling, selective laser 
       sintering, vacuum casting, CNC machining, and injection 
       molding with soft prototype tooling, and hard tooling. The
       viability of each process is compared with respect to the 
       manufacturing cost and lead time for specific production 
       quantities of one, ten, one hundred, one thousand, and ten
       thousand. Process selection varies greatly with the 
       desired production quantity and cost/lead time 
       sensitivity. The results indicate that the average cost 
       per enclosure assembly is highly sensitive to the 
       production quantity, varying in range from US $0.35 to US 
       $135.80 per enclosure, while the lead time to manufacture 
       the enclosure and the required tooling/programming could 
       vary from 2 days to 49 days with a marginal production 
       time varying from 67 minutes to 0.5 minutes 
590    School code: 0111 
590    DDC 
650  4 Engineering, Mechanical 
650  4 Plastics Technology 
690    0548 
690    0795 
710 20 University of Massachusetts Lowell 
773 0  |tMasters Abstracts International|g44-03 
856 40 |uhttp://pqdd.sinica.edu.tw/twdaoapp/servlet/