Fuzzy Failure Modes and Effects Analysis with Different Defuzzification Methods – A Case Study for Bearing Manufacturing Process

In the global competitive manufacturing sector, the management of quality and reliability in product design and manufacturing becomes a major challenge for firms to survive. The Failure Modes and Effects Analysis (FMEA) method is a widely used reliability estimation technique to identify possible failures on the manufacturing process. The bearing Fuzzy Failure Modes and Effects (FFMEA) purpose is to prevent repetition of damage and additional costs. In order to obtain a good result, the existing information and data collection should be carefully analysed. The Risk Priority Number (RPN) is calculated by three criteria - considering the Probability of Failure (PoF), Consequence of Failure (CoF), and Detectability of Failure (DoF).