Definitions for "CORRUGATIONS"
Deformation of an unsurfaced track taking the form of transverse, close-pitch undulations - ie at right angles to the direction of the track. Sometimes referred to as 'washboard'.
Regular undulations or ruts on a gravel surface caused by rain and vehicle traffic.
Transverse ripples caused by a variation in strip shape during hot or cold reduction.
Diagonal ridges and furrows running parallel to the machine direction and of a relatively constant nature.
Diagonal ridges and furrows running in the machine direction and of a relatively constant width which occur around the circumference of the roll.
Rows of ridges.
Fine ribbing sometimes applied to filter paper following resin impregnation and before pleating to form a pleated paper filter element. Corrugations which run at right angles to the main pleats help to hold the pleats apart against the action of differential pressure encountered in use. Discontinuous corrugation or dimples are sometimes alternately employed.
Keywords:  indentations, rail, stick, slip, head
Indentations in the Rail Head caused by Slip Stick.