This paper presents a novel assessment model for a labour-intensive manufacturing system with repairs as a consideration. The proposed model integrates a multistate network construction and reliability evaluation procedure. Such a manufacturing system is first constructed as a labour-intensive manufacturing network (LMN) to deal with the workstations comprising operators. We further define the workload state of a workstation by three fuzzy membership functions for ‘under-normal-workload’, ‘normal-workload’, and ‘over-normal-workload’. Hence, the workload of a workstation is fuzzy multistate and the workstation reliability can be measured by three fuzzy membership functions. Subsequently, the system reliability is evaluated in terms of all workstation reliabilities and is derived by fuzzy intersection. The reliability analysis can help the production manager to understand the demand satisfaction of an LMN. A case-based example of a footwear manufacturing system is utilised to validate the applicability of the proposed assessment model.
|Number of pages||11|
|Journal||International Journal of Systems Science: Operations and Logistics|
|State||Published - 3 Jul 2014|
- fuzzy multistate
- labour-intensive manufacturing network
- system reliability