Abstract
An investigation has been conducted to figure out the effect of plate thickness on the fatigue crack growth rate (FCGR) of a low carbon bainitic steel. Based on the standard ASTM E647, standard compact tension specimens with three different plate thicknesses were used in fatigue crack growth test and the crack closure was taken into consideration when calculating crack lengths. When analyzing the data obtained in fatigue tests, two different mathematic models were used to fit the relationship curve between crack length a and cycle number N. Results show that the low carbon bainitic steel with a bigger plate thickness has a lower crack growth rate in a short crack growing period. More information for crack growth behavior was obtained via the scanning electron microscope technique.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
