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SUMMARY:Background and uses of guided ultrasonics - Dr David Alleyne\, CEO
 \, Guided Ultrasonics Ltd
DTSTART:20221202T160000Z
DTEND:20221202T170000Z
UID:TALK192797@talks.cam.ac.uk
CONTACT:46601
DESCRIPTION:Detection of cracks in many engineering components is critical
 ly important as these often propagate to cause failures that can be catast
 rophic.  Pipelines\, particularly in establishments such as oil refineries
 \, are an example of critical and extremely valuable infrastructure in whi
 ch failures could be particularly catastrophic.  Much of the pipework in s
 uch establishments is lagged\, which makes inspection more difficult.  Thi
 s is especially the case with traditional inspection techniques in which p
 ipelines are inspected through the section with equipment attached to the 
 outside: this would require progressive removal of lagging\, inspection th
 en replacement of the lagging.\nThe technology developed by Guided Ultraso
 nics Ltd is based on the simple principle of propagating waves longitudina
 lly in components such as pipework.  With this method\, only a small amoun
 t of lagging has to be removed and replaced\, and it is possible to inspec
 t considerable lengths of pipework at a time.  The “time of flight” of
  a wave between being broadcast and a response being received from a defec
 t shows where a defect exists along a pipe.  \nBy varying the mode shape o
 f the wave\, it is possible to inspect particular areas of the pipe and to
  assess changes in dimensions such as the wall thickness\, which could ind
 icate that there are effects of corrosion.\nThe same basic technology has 
 been applied to inspection of rails\, for which there is the possibility o
 f inspecting areas such as the railhead and railfoot.  \n
LOCATION:JDB Seminar Room\, CUED
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