3. A particular component on a wind turbine is expected to see fatigue cycles and stresses as shown on the attached SN Diagram. Data for points shown in orange is contained on the accompanying Excel file. Using Miner rule determine if the component will survive the anticipated stress cycles. Remember that the SN data is shown and plotted on a log-log format. Actual Strains 309 Cycles Stress MPA) 2,750 2,300 1,750 1,875 1,250 875 025 300 375 250 188 125 MABORBONESES 327 345 304 382 400 418 435 473 491 309 SN Curve Cycles Stress(MPA) 10 100 1,000,000 10,000,000 800 800 175 175 Stress MPA 1,000 300 10 100 SN Diagram 300,000 1,000,000 10,000,000

Fig: 1