Accelerated Corrosion Fatigue Crack Growth Studies on IS 2062 Gr. E 300 Steel

specimen made of IS 2062 steel in salt water environment. The specimen was placed in a transparent chamber made of perspex sheet containing 3.5 % NaCl solution which acted as corrosion environment. The corrosion process was accelerated by applying constant direct current of 0.2 A which was supplied by means of a regulated power supply. The test was conducted using a ±250 kN capacity computer controlled servo-hydraulic fatigue rated Universal Testing Machine. The maximum and minimum load values were 15 kN and 1.5 kN. The test frequency was 0.375 Hz and the stress ratio was 0.1. Number of cycles to crack initiation was determined. Crack growth data were recorded at regular intervals. Crack growth curves were plotted and material constants C and m were found. Analytical studies were carried out and the results were compared with experimental results. Details of the analytical and experimental studies and the results are presented in this paper