SEDL / STP / STP435-EB / STP34080S

Computerized Long-Term Corrosion Data

Spatig, DO
Systems analyst, Reynolds Metals Co., Richmond, Va.

Ailor, WH
Senior corrosion engineer, Reynolds Metals Co., Richmond, Va.

Pages: 18    Published: Jan 1968

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Abstract

A program has been devised which permits computer handling of all data derived from 20-year atmospheric and marine programs. This program makes feasible the routine handling of thousands of test specimens and calculations in an accurate but rapid method. Tape records from punched cards include exposure location, duration of test, mechanical properties, density, alloy type, and panel dimensions for both control and exposed specimens. These tape records are processed on an IBM 1410 computer to calculate the effects of aging and exposure. The final machine-printed report gives the corrosion rate in mdd (milligrams per square decimeter per day) and mpy (mils per year), along with per cent changes in tensile, yield, and elongation values due to corrosion for individual specimens, and also calculates average values of these properties by alloy and exposure site.