Use of Statistical Analysis Methods for Estimating the Reliability of First-Year Carbon Steel and Zinc Corrosion Loss Predictions Calculated Using Dose-Response Functions

摘要

The following parameters have been used to estimate the reliability of predicted first-year corrosion losses of carbon steel and zinc (K-l(pr)): the standard determination coefficient R-st(2) according to ASTM G 16; statistical indicators such as SMAPE and MAPE; generalized determination coefficients; confidence angle. The experimental data on corrosion losses of carbon steel and zinc (K-l(exp)) and the atmosphere corrosivity parameters were taken from the UN/ ECE international program and Russian program. The K-l(pr) values were calculated using various dose- response functions. It is not recommended to use the standard determination coefficient R-st(2) in the y = K-l(pr), x = K-l(exp) coordinates.