![]() ![]() Rizzo, in Sensor Technologies for Civil Infrastructures, 2014 17.3.2 Magnetic particleīesides visual inspection, magnetic particle inspection (MPI) has been the most widely used NDE method underwater ( Goldberg, 1996 Na and Kundu, 2002). Results of application tests, of on site realizations and of experiences with fixed installations are presented. The different aspects of this concept are discussed for single parts as well as for continuously produced goods inspection. Handling, illumination and evaluation using cameras, image processing and fully automated accept/reject-decision-computers are the final step for an objective, reliable and quantitative NDE-procedure. Current flow control by Hall-sensor measurement and constant current regulation are guaranteing the right values over the time +Īutomation. Instead of system parameter installation due to the inspector's skill and estimation they are fixed by a code-number system, storing for up to 100 different parts number and type of magnetization circuits, time of magnetization, of ink application and of post-magnetization, pulse magnetization parameters as well as demagnetization. Installation, measurement and control of MPI system parameters. ![]() The design of multi-circuit MPI systems after a modeling process becomes state of the art + The results comparing model and measurement for complex parts are encouraging good. ![]() Modeling of MPI based on Maxwell's equations and using finite elements. in automotive industry) a new concept of MPI was developed and will be presented here: + Because of the need to rely in the future too on a sensitive but cheap technique for billions of parts per year (e.g. ![]()
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