Tatsuo Endo (遠藤 達雄, Endō Tatsuo; 1925 – 1989) was a Japanese engineer. In 1968, while a visiting professor at the University of Illinois, he developed the rainflow-counting algorithm for fatigue analysis of structures, along with M. Matsuishi.
Source: “Tatsuo Endo (engineer)”, English Wikipedia (CC BY-SA 4.0), excerpt
