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| 題名: | Advanced Multi-process Performance Analysis Chart (AMPPAC) for an Entire Product with Joint Confidence Regions |
| 作者: | Chen, H.T.;Chen, K.S. |
| 日期: | 2007 |
| 上傳時間: | 2009-08-20 13:15:39 (UTC+8) |
| 摘要: | The control charts are widely used to control the process stability, and then
analyse the ‘in-control’ data in the statistical process control. However, an
‘in-control’ process is not enough since it can produce non-conforming or out
of specification products. Process capability indices, like Cp, Cpu, Cpl and Cpk,
have been proposed to make decisions on how well the process meets
specifications in practice. These indices can not be straightforwardly used for
illustrating and analysing the multi-process products. Hence, the multi-process
performance analysis chart (MPPAC) has been proposed. Nevertheless, the
MPPAC approach is not reliable since sampling errors are ignored, and PCAC
is only just suitable for full inspection. To overcome these shortcomings, this
paper aims to develop an advanced multi-process performance analysis chart
(AMPPAC) with process capability zones as well as taking into account interval
estimates of these indices for precisely measuring an entire product composed of
symmetric tolerances, larger-the-better and smaller-the-better characteristics.
Besides, the issue about independent processes has been proposed by Chen et al.
(Chen, K.S., Huang, M.L. and Li, R.K., Process capability analysis for an entire
product. Int. J. Prod. Res., 2001, 39(17), 4077–4087.), and the solution about
dependent processes will be provided in this paper. Thus, the AMPPAC can
reliably and appropriately assess the multi-process performance and provide
chances for continuous improvement on the manufacturing process. |
| 關聯: | International Journal of Production Research, 45(9), 2141-2159 |
| 顯示於類別: | [工業工程與管理系(所)] 【工業工程與管理系所】期刊論文
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