Forum Technical Discussions Re: creeping wave? Posted by: Slawomir Mackiewicz , E-mail: Address, on July 08, 2008 at 14:55 : In Reply to: creeping wave? posted by : john howard , E-mail: Address, on July 08, 2008 at 01:11 : ----------- Start Original Message ----------- : Can anyone help? Is there or is there not a 'creeping wave'? Can it be proven either way? ------------ End Original Message ------------ Creeping wave is not a wave in the same meaning as the “standard” L, T or Rayleigh waves, which are strictly speaking the mathematical solutions of the Wave Equation. It is just a practical term used by UT specialists for description of diffracted part of longitudinal wave beam which travels along the object surface (doesn’t matter external or internal). The creeping wave is heavily attenuated because it looses its energy by transformation into transversal waves as it travels along the object surface. The widely known application of creeping wave is TOFD where it is normally the first wave registered by the system. Follow Ups: Post a Followup: Name: E-Mail: Subject: Comments: ----------- Start Original Message ----------- : : Can anyone help? Is there or is there not a 'creeping wave'? Can it be proven either way? : Creeping wave is not a wave in the same meaning as the “standard” L, T or Rayleigh waves, which are strictly speaking the mathematical solutions of the Wave Equation. It is just a practical term used by UT specialists for description of diffracted part of longitudinal wave beam which travels along the object surface (doesn’t matter external or internal). : The creeping wave is heavily attenuated because it looses its energy by transformation into transversal waves as it travels along the object surface. : The widely known application of creeping wave is TOFD where it is normally the first wave registered by the system. ------------ End Original Message ------------ Optional Link URL: Example: "http://www....html". Alternative write "http://www.ndt.net/wshop/attach/filename.htm" if you transfered a filename.htm via FTP Page Title: is important! Optional Image URL: http://www....gif Attention! Please click the button only once. This may take a moment to process Forum Technical Discussions Help