マネジメントのための品質工学 3.製造における品質水準の評価は金額で

抄録

If a defective product is not skipped to customers, the product does not affect customers. Therefore the percent defectives is not a good quality measure. Many manufactures now accept to use the process capability C_p defined by the following measure

C_p=Tolerance/(6×σ)

However, process capability index C_p is not monetary evalution, The management prefers to use monetary measure. Quality loss is defined by the following monetary measure

L=(A/9)×(1/C_p²⁾

Where A is the loss per defective product. This paper discuss the monetary measure for management.