A Proposed Methodology for Task Analysis in Ergonomic Evaluations
© 2015 The Authors The aim of this job is to propose a procedure that helps ergonomists and engineers to develop task analysis and evaluations in workstations. In the ergonomics field, task analysis is a method to describe and analyze the task performance when users interact with complex systems, this is the first step to do an ergonomic evaluation. Most of the areas in ergonomics requires task analysis, literature contains clear descriptions for task analysis for cognitive tasks, and nevertheless there is a lack of information for biomechanics and design evaluations. In here, a procedure is proposed in order to offer tools to correctly conduct ergonomic assessments that help ergonomists to develop this evaluations and indicate the risk level of certain workstation. This research contains a proposed procedure for task analysis and two case studies applying this procedure. The proposed procedure consists in five phases: recognition, video recording, subtasks separation, video analysis, and frame classification. The proposed procedure is applied in two case studies. The first case study is in a workstation of an automobile parts industry. The second case study is in a shoe manufacturing workstation. Subtasks are identified and classified with frequencies in both jobs, indicating what subtasks are more repetitive, and thus need to be assessed. This work provides a procedure that allows to standardize the process of task analysis in biomechanics and design evaluations, this procedure allows to obtain the frequency of the subtasks that are part of the assessed workstation, and thus it is easier to identify which one of these need to be evaluated with ergonomic methods.