Developing the integrated approach of Kano model and Failure Mode and Effect Analysis

The present study introduces revisions designed to develop the integration of the Kano model and Failure Mode and Effect Analysis (FMEA). Previous research in this area has frequently reported problems in the methodology for implementing FMEA, problems with interpreting its results and problems with the viewpoint for assessing potential errors. The present study offers an exploratory presentation of a more precise method for determining categories of requirements using requirement curves plotted on a graph. It also modifies the existing method for determining the Kano 'k' parameter for use in calculating the risk priority number (RPN). It also proposes an alternative method for assessing preventive actions based on the effort-to-effect ratio. The method was tested using a case study which confirmed that it calculates RPNs with greater precision.