Vibration fatigue of a vibration fatigue analysis is the modal analysis, that exposes the natural modes and frequencies of the vibrating structure and enables accurate prediction of the local stress responses for the given excitation. Only then, when the stress responses are known, can vibration fatigue be successfully characterized. The more classical approach of fatigue evaluation consists of cycle counting, using the rainflow algorithm and summation by means of the Palmgren-Miner linear damage hypothesis, that appropriately sums the damages of respective cycles. When the time history is not known, because the load is random ("e.g." a car on a rough road or
Oh Dear! What Can the Matter Be? And nobody knew she was there. The second old lady was Abigail Splatter. She went there 'cause something was definitely the matter. But when she got there, it was only her bladder, And nobody knew she was there. </poem> One suggested precursor to the bawdy song, recorded in William's "Upper Thames" collection is the following "old morris fragment": <poem> Oh, dear, what can the matter be? Three old women tied to an apple tree! One ran away, the others stopped till Saturday. Oh, dear, what can the matter be? </poem> As with many folk songs and tall tales each verse