Failure rate estimation method, failure rate estimation system, and recording medium

摘要

PROBLEM TO BE SOLVED: To estimate assembly defective potential provided in the product in a stage before manufacture such as a design stage by calculating the fraction defective of assembly of an evaluation object by correcting an extracted fraction defective coefficient by using extracted first and second correction coefficients. SOLUTION: In a fraction defective coefficient data base 211 for respective standard assembly operations, coefficients 'fraction defective coefficients for respective standard assembly operations' for indicating the easiness of the generation of operation defects provided in the respective assembly operations are stored. In an operation order correction coefficient data base 211, correction coefficients 'operation order correction coefficients' for enlarging the fraction defective basic coefficients for the respective assembly operations of the respective operations are stored. Also, since the easiness of the generation of the work defects provided in the respective assembly operations is affected by an assembling component and an opposite component to be assembled, etc., an assembly component condition correction coefficient data base 231 is provided. Then, at the time of calculating the estimated value of the fraction defective of the assembly, the correction coefficients are read and the estimated value is calculated.