Integration of Failure Mode and Effect Analysis with Fuzzy Analytical Hierarchy Process for Risk Prioritization in Machining Processes

This paper develops a Failure Mode and Effect Analysis (FMEA) method integrated with the Fuzzy Analytical Hierarchy (FAHP) method to prioritize the risk in the autoclave bolt machining processes. FMEA is applied to identify and evaluate the failure modes, while FAHP is utilized to determine the weights of risk factors so that the weights are not taken the same as in the traditional FMEA approach, but it is based on the decision maker’s judgment. The incorporation of fuzzy set theory into FAHP can overcome the problems of uncertainty and vagueness faced by decision makers during the evaluation process. The result of the research shows that the severity has the highest weight, followed by detection and occurrence. In addition, the diameter is not accurate in the failure mode with the highest Risk Priority Number (RPN) among all failure modes.