A simple bracket as shown has a design life of 7 years (61,320 hours). Loading occurs at the end of the short section which has been welded and the component is constrained at both ends of the main bar. Because failure is known to occur at the weld, the finite element modeling at the loading point and the stresses found there can be ignored for the purposes of this exercise. The load applied in the model was 900 lbs total. In service, the component experiences loading of 3000 lbs in the direction of the finite element load and 7000 lbs in the reverse direction. This occurs once every 30 minutes. Only a 4% failure rate is allowed.