Q: A rod built into the wall is loaded with 50 N up-and-down. The radius of the rod is 2 mm. The length of the rod is 10 mm. After how many repetitions the rod is damaged ? (The material tensile yield strength is 250 MPa) | 120. 100 80 60 40 20 10 Sa (MPa) 10 10 S-N Diagrams 104 105 Sm= =-80M Pa Sm=OMPa Sm=80MPa .N 105