Formulation and Practical Use of the Half-Life Model.
Kaizen costing focuses on continuous reductions of
costs, which should be realized for existing products in
a company. For planning and control purposes,
comprehensive and efficient tools for measuring
performance are required. For this purpose we suggest
the so-called ”half-life model”. It is based on the
practical experience, that any defect level decreases at
a constant rate over a certain time period. This paper
gives the mathematical formulation for this model and
illustrates its practical use with different examples.