Background: Ergonomics is a science that provides methods of creating reasonable adaption between occupation and worker by improving usability through consideration of job demands and human ability to satisfy them. A deep understanding of user’s thoughts on and attitudes toward utilizing a tool could improve its design. In the present study, two cushions designed particularly for one of c...

The paper presents the results of a research work regarding the effective design of an assembly line for heaters production. Considering that the real plant still doesn’t exist, simulation has been used as cognitive tool. After the modeling and the VV&A phases the simulation has been used for carrying out ergonomic analyses for each assembly line workstation. The simulation results highlight pr...

BACKGROUND Concerns were raised about the possibility of a high prevalence of musculoskeletal symptoms in a truck assembly plant. AIM The aim of this study was to investigate the prevalence of musculoskeletal symptoms in a group of truck assembly workers. METHOD A cross-sectional study of 461 truck assembly workers was carried out using a modified version of the Nordic questionnaire and the...

In manufacturing, control of ergonomic risks at manual workplaces is a necessity commanded by legislation, care for health of workers and economic considerations. Methods for estimating ergonomic risks of workplaces are integrated into production routines at most firms that use the assembly-type of production. Assembly line re-balancing, i.e., re-assignment of tasks to workers, is an effective ...

there are some machineries and equipments as well as relatively fix amount of human resources involved in any production process. in many cases, by observing operational method of a process, one may see that some of these machineries are not working, but on the other hand, other equipments are continuously working, and many parts are set in front of them, waiting to be set up over machines to c...

In this paper, we consider the problem of designing an integrated assembly line when many skilled and unskilled workers are available. This problem arises when there are certain limited resources available such as skilled workers in which the operation time for every task is different depending on assignment of the unskilled workers to help the skilled workers. The selection of both skilled wor...

Assembly Line production is one of the widely used basic principles in production system. The problem of Assembly Line Balancing deals with the distribution of activities among the workstations so that there will be maximum utilization of human resources and facilities without disturbing the work sequence. Research works reported in the literature mainly deals with minimization of idle time i.e...

In this paper, we present the process of rebalancing the line at motorcycle-assembly plant. The company found it necessary to rebalance its line, since it needs to increase production in the spring and summer months. The main characteristics of the problem are as follows: (i) the company hires temporary staff, who need more time to carry out their tasks than permanent workers; (ii) there must a...