To predict the service life of many steel structures, an understanding of fatigue crack initiation in steel is required. In this paper, the monitoring system of a fatigue crack initiation by compliance technique was described and the fatigue crack ini...
To predict the service life of many steel structures, an understanding of fatigue crack initiation in steel is required. In this paper, the monitoring system of a fatigue crack initiation by compliance technique was described and the fatigue crack initiation life by the system was compared by an ultrasonic technique. The fatigue crack initiation life of a notched specimen in SPS 5A steel was also investigated by the system.