A commonly used equation that describes the behavior of low-cycle fatigue is the '' Coffin-Manson relation '' ( published by L. F. Coffin in 1954 and S. S. Manson in 1953 ) : where , One noteworthy event in which the failure was a result of LCF was the 1994 Northridge earthquake . Many buildings and bridges collapsed , and as a result over 9,000 people were injured . Researchers at the University of Southern California analyzed the main areas of a ten-story building that were subjected to low-cycle fatigue . Unfortunately , there was limited experimental data available to directly construct a S-N curve for low-cycle fatigue , so most of the analysis consisted of plotting the high-cycle fatigue behavior on a S-N curve and extending the line for that graph to create the portion of the low-cycle fatigue curve using the Palmgren-Miner method . Ultimately , this data was used to more accurately predict and analyze similar types of damage that the ten-story steel building in Northridge faced
1994 Northridge earthquake
1994 Northridge earthquake
Low-cycle fatigue