Banca de DEFESA: MARAISA DOS SANTOS SOUZA

REDUCTION OF LOSS IN TEMPERED GLASS MANUFACTURE BASED ON HUMAN FACTORS: A CASE STUDY IN BAHIA.

Human Factors; Efficiency; Tempered glass losses; Fuzzy Logic

Changes in an industrial process are associated with the need to improve levels of competitiveness. The reduction of failures and cost control are requirements that enable the sustainable permanence of the industry in the Market, in addition to well-standardized processes through the redefinition of low efficiency activities, the identification of failures in the task and consequent reduction of process losses. This work is a case study in a glass production industry using Fuzzy Logic in the identification and evaluation of the effect of critical variables of human factors and the impact of these variables in this manufacture, as a proposal of process efficiency. The model incorporates the knowledge of operators and managers in the elaboration of an action plan for regulation and improvement in the execution of the task. The simulations used the three input variables: Training, Stress Level and Commitment, and in the design of the rules in the Fuzzy Model, the weights named: High, Medium and Low were defined. In the simulation, the maximum value for the Training variable and the maximum value for Commitment, demonstrated the probability of reduction in the glass loss indicator from 50% to 13%, even in an environment of high stress level. The medium-sized Manufacturing Industry, using fuzzy tools, manages to direct actions to reduce process losses, indicating the benefit of scientific methods for the operation of the factory floor, thus contributing to its economic and environmental sustainability.