With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bela Lugosi was a person.
text_B: The rainflow-counting algorithm -LRB- also known as the `` rain-flow counting method '' -RRB- is used in the analysis of fatigue data in order to reduce a spectrum of varying stress into a set of simple stress reversals .. fatigue. fatigue ( material ). stress. stress ( physics ). algorithm. algorithm. Its importance is that it allows the application of Miner 's rule in order to assess the fatigue life of a structure subject to complex loading .. fatigue. fatigue ( material ). The algorithm was developed by Tatsuo Endo and M. Matsuishi in 1968 .. algorithm. algorithm. Tatsuo Endo. Tatsuo Endo. M. Matsuishi. M. Matsuishi. Though there are a number of cycle-counting algorithms for such applications , the rainflow method is the most popular as of 2008 .. Downing and Socie created one of the more widely referenced and utilized rainflow cycle-counting algorithms in 1982 , which was included as one of many cycle-counting algorithms in ASTM E 1049-85 .. This algorithm is used in Sandia National Laboratories LIFE2 code for the fatigue analysis of wind turbine components .. fatigue. fatigue ( material ). algorithm. algorithm. Sandia National Laboratories. Sandia National Laboratories. Igor Rychlik gave a mathematical definition for the rainflow counting method , thus enabling closed-form computations from the statistical properties of the load signal .. Igor Rychlik. Igor Rychlik. For simple periodic loadings , such as Figure 1 , rainflow counting is unnecessary .. That sequence clearly has 10 cycles of amplitude 10 MPa and a structure 's life can be estimated from a simple application of the relevant S-N curve .. amplitude. amplitude. MPa. MPa. S-N curve. fatigue ( material )#S-N curve. Compare this with Figure 2 which can not be assessed in terms of simply-described stress reversals .. stress. stress ( physics )
not_related.