Four-Point Cycle Counting

Similar to the three-point cycle counting method, the four-point cycle counting rule uses four consecutive points to extract a cycle. Figure 8.11 illustrates the principles for two possible cycles counted in a most generic time history. The four... 

Fig. 8.11 Intermediate load reversal AS2 that can be separated using the four-point cycle counting rule. Two cycles of stress range ASi and AS2, respectively, can be counted...

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