Artificial vision and eddy current

 

One of the most important development areas in ISEND is the integration of technologies to improve detection and characterization of defects. Artificial vision or digital imaging, is, after Eddy current, the main for ISEND. However, ISEND's approach is to combine artificial vision as a secondary method with Eddy current as primary. These solutions are named EDDYEYES, a combination between artificial vision and eddy current.

 

 

Getting the highest precision and accuracy of Eddy Current systems (HOTdiscover, ROTOdiscover, ENDiscover, WELdiscover, DEFdiscover and MATdiscover) to accomplish quality standards and to take the well-known advantages of Eddy Current. It can be done with the standard ISEND products well proven for years the installed base. ISEND offers its solutions at three different levels (where each level includes the previous): Level BASIC for real time testing Level PRO for perpetual analysis of data. Level EDDYEYES for real images capturing

The demands for high quality products continue to increase. NDT technologies are not new. The industry has been using several methods for decades. Ultrasonic, Eddy Current and other electromagnetic (or not) methods have been widely used in different segments. International standards define clearly the way they can be used in terms of type of defects, morphology, depth, etc. But it is not enough anymore. The customers demand more and more quality but also they are demanding more and more information. And not only any kind of information, of course, but useful information, information that becomes knowledge. Statistics about defects are therefore not enough. The customers want much more. They need automatic inspection, but they also want knowledge that goes machine to machine. Knowledge that goes beyond the limits of each single method. Knowledge that adds value.

EDDYEyes is the product of our latest and proven research. EDDYEyes is an inspection system that is composed of sophisticated Eddy Current (ET) equipment which can be adapted to every particular client and a set of vision components that can take pictures of real products during the production processes.

Once a defect is detected by ET, the system will take, show and store a picture that can be used to make the best decision in real time and to exploit the information further. The system also takes pictures of critical areas of the material even when defects are not be detected by the ET. With a complete set of components and software, the system can detect every kind of defects. It’s a terrific improvement because difficult areas to inspect, like long defects in hot rolling wire rod and bar inspection or edge areas (noses and tails) that are outside the ET capabilities, are now possible. As it was said before, this solution is based in two different methods: Eddy current and vision. Both methods could work in a stand-alone way, but the real innovation is to combine them to make EDDYEyes useful. Integrating Eddy Current with artificial vision to get unified images of the defects. It includes taking pictures of defects that have been detected by the ET equipment, but also, pictures from other critical areas of the material.

Therefore, the real time operators and subsequent users could have real images from ET alarms. Expanding Eddy Current capabilities beyond its limits, and the most important aspect here is to detect long defects in hot rolling operations to have a full inspection of wire rod and bars. ET method has some limitations such as:

  • border (nose and tail) inspection,
  • long defects in hot rolling mill operations
  • periodic defect detection.

EDDYEyes will save images from these critical areas helping customers to take the best decision as soon as an alarm occurs. ISEND is always working on the improvement of surface quality testing. ISEND came up with the Eddy Current testing as the most reliable, easy, accurate and fast for testing surfaces and still use ET as main NDT method. But sometimes, the results are difficult to analyze, and then, ISEND suggests the vision, in combination with the Eddy Current coils, as a complement to reach the highest levels of efficiency. In summary: The combination between Eddy Current and vision allows covers all the defects that can occur over the surface of the metals, including long defects as well as nose and tail inspection. Therefore, ET is the main method and vision is used where ET can not be enough efficient. This approach allows our customers to take advantage of the current ISEND equipment without losing any functionality as well as include the vision as a complementary tool. If you want to know how to improve your current testing system or you want to receive advisement about how to implement a new one, please, do not hesitate to contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. or to your client representative.

 

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