Abstract:

The effects on the fatigue characterization under the typical atmosphere and accelerated simulation environments are studied based on the test of two kinds of specimens　with protection coating systems for aircraft structures. Some modified coefficients for protection and unprotection coating systems under the environments are given by using structural detail fatigue rating (DFR)method. From the test results, the following conclusions can be drawn out: the DFR value of the coated specimen exposed to the weather, relative to a non exposed specimen, has dropped about 11% to 21%.Under the same condition, the DFR value of a double coating specimen is higher than that of a single coating one. All the research results here can be used as the basis to engineering structure in the area of corrosion protecting design.

Key words: fatigue properties, coating systems, environment, protection, corrosion