U-shaped assembly line layouts and their impact on labor productivity: An experimental study [An article from: European Journal of Operational Research]

This digital document is a journal article from European Journal of Operational Research, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The decision to move straight-line assembly systems to U-shaped assembly lines systems constitutes a major layout design change and investment for assembly operations. Proponents of the lean manufacturing and just-in-time philosophies assert that U-shaped assembly systems offer several benefits over traditional straight-line layouts including an improvement in labor productivity. This premise often serves as the fundamental reason why firms consider transforming their assembly systems from traditional straight-lines to U-shaped layouts. Surprisingly, little empirical or experimental data supports this assertion. The purpose of this research is to empirically confirm that U-shaped assembly lines improve labor productivity. Results indicate that labor productivity will improve significantly under certain conditions when switching from a straight-line layout to a U-shaped layout but not in all cases. The research also reveals some limitations of such a layout change when factors such as the number of tasks and cycle times are varied.