A COMPARISON OF DIRECT COST SAVINGS BETWEEN FLEXIBLE AUTOMATION AND LABOR WITH LEARNING

This paper compares flexible automation with labor-intensive manufacturing processes in a batch production environment and considers learning, forgetting, inventory carrying costs, setup costs, production demand volume, previous production experience, and the proportion of material to labor cost. While flexible automation typically can reduce setup times, and therefore inventory carrying costs through smaller optimal batch sizes, the results of this research show that the effect of forgetting on relative cost savings is difficult to predict in some situations. When using optimal lot sizes in both the automated and labor environments, cost savings from flexible automation may be smaller than expected or may occur in different ways than anticipated. (LEARNING; FLEXIBLE AUTOMATION; COST; BATCH PRODUCTION)

[1]  Dorothy Leonard-Barton,et al.  Implementing Structured Software Methodologies: A Case of Innovation in Process Technology , 1987 .

[2]  Timothy L. Smunt,et al.  The impact of worker forgetting on production scheduling , 1987 .

[3]  Sven Axsäter,et al.  A Note on EMQ under Learning and Forgetting , 1981 .

[4]  Jeffrey D. Camm,et al.  Capacitated lot sizing under setup learning , 1994 .

[5]  T. Morton,et al.  The Effects of Learning on Optimal Lot Sizes: Further Developments on the Single Product Case , 1985 .

[6]  Ram Rachamadugu,et al.  Policies for lot sizing with setup learning , 1997 .

[7]  John C. Fisk,et al.  Production Lot Sizing Under A Learning Effect , 1982 .

[8]  Timothy L. Smunt,et al.  A Multilevel Decision Support System for the Financial Justification of Automated Flexible Manufacturing Systems , 1987 .

[9]  E. C. Keachie,et al.  Effects of Learning on Optimal Lot Size , 1966 .

[10]  Amiya K. Chakravarty,et al.  Production Scheduling During Phased Implementation of Flexible Manufacturing Cells , 1990 .

[11]  Suresh Chand,et al.  Lot sizes and setup frequency with learning in setups and process quality , 1989 .

[12]  David M. Grether,et al.  Forecasting Non-Stationary Economic Time Series , 1966 .

[13]  Salah E. Elmaghraby,et al.  On the Scheduling of Jobs on a Number of Identical Machines. , 1972 .

[14]  George L. Adler,et al.  The Effects of Learning on Optimal Lot Size Determination—Multiple Product Case , 1974 .

[15]  Timothy L. Smunt,et al.  Optimal Acquisition of Automated Flexible Manufacturing Processes , 1989, Oper. Res..

[16]  Pei-Chann Chang,et al.  One-machine rescheduling heuristics with efficiency and stability as criteria , 1993, Comput. Oper. Res..

[17]  D. Sule A Note on Production Time Variation in Determining EMQ Under Influence of Learning and Forgetting , 1981 .

[18]  Suresh P. Sethi,et al.  A Dynamic Lot Sizing Model with Learning in Setups , 1990, Oper. Res..

[19]  Jeffrey D. Camm,et al.  Effect of process learning on manufacturing schedules , 1993, Comput. Oper. Res..

[20]  Kirk R. Karwan,et al.  Production lot sizing under setup and worker learning , 1988 .