High-speed detection of rolling contact fatigue in railway rails
Eddy current and associated electromagnetic methods have long been used for the detection of surface defects on a variety of products. With the ever-increasing use of computer technology coupled with the availability of inexpensive memory, the trends have been toward software implementation
of the detection process. The analogue/digital boundary has been pushed ever forward towards the defect detector. There is more use of computer techniques to enhance the presentation of results while ignoring the basic analogue detection function. Whilst this option is well-suited to many
applications, there is a need to take the boundary a little further away from the defect detector for specific applications. Even with modern high-speed processors there is merit in the early stages of detection being analogue, both on cost and performance grounds. Here, one analogue method
of implementing a high-speed sensitive and selective detection system for small defects is discussed.
Document Type: Research Article
Affiliations: Faculty of Technology, Southampton Solent University
Publication date: 01 June 2006
- Official Journal of The British Institute of Non-Destructive Testing - includes original research and development papers, technical and scientific reviews and case studies in the fields of NDT and CM.
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