Railhead Damage

Trackform specific corrugation

Some trackforms have pronounced resonances that act as unusual wavelength-fixing mechanisms.  An example is shown of corrugation in the 30-100mm wavelength range that has occurred on the low rail in a curve.  On one trackform, between about 8.88km and 9.09km, there is severe and very periodic corrugation whereas there is minimal corrugation on the other trackform.