Bucket Wheel Excavator Damage by Fatigue Fracture – Case Study

AbstractThis paper considers some problems of breakdown structure of bucket wheel excavator. Problems are caused by the effect of design, manufacturing, service conditions, welding joint quality and its defects. As is known, the applied load is variable depending on many factors which together with identified high stress concentration on critical points make this case the key to understanding the structure devastation process.Very important how crack initiation is transferred to a lug since final fast fracture has occurred indicating poor origin design of loading transfer in the structure of bucket wheel excavator. So, it is shown effects of applied load and stress distribution on fracture mechanism