Before revision: Count the number of half-cycles by looking for terminations in the flow occurring when either: case (a) It reaches the end of the time history; case (b) It merges with a flow that started at an earlier tensile peak; or case (c) It flows when an opposite tensile peak has greater magnitude.
After revision: Count the number of half-cycles by looking for terminations in the flow occurring when either: case (a) It reaches the end of the time history; case (b) It merges with a flow that started at an earlier tensile peak; or case (c) An opposite tensile peak has greater magnitude.