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The Research of Electromagnetic Testing Method Based Ondetection of Wire Rope

Author: DingZuoZuo
Tutor: LiuXiaoPing
School: Beijing University of Posts and Telecommunications
Course: Detection Technology and Automation
Keywords: Wire Rope Magnetic Flux Leakage Testing Finite Element Analysis EMD
CLC: TG115.284
Type: Master's thesis
Year: 2011
Downloads: 83
Quote: 0
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Abstract


Rope as used in industrial production parts , its reliability largely affect the safe operation of many industrial production equipment . For some industry equipment , wire rope , whether reliable run will directly affect the safety and production . It can be seen , of wire rope damage detection , the practical wire rope damage detection methods and testing equipment can ensure the safe operation of the equipment , to avoid major accidents in production , and therefore has important economic and social benefits . This thesis is based on learning at home and abroad rope nondestructive testing , based on the electromagnetic detection method , from the magnetic field simulation and signal processing Wire Ropes recognition research . This article first application Solidworks software to establish a simulation model of the F 28 rope diameter wire rope , after the import Ansoft software , finite element model processing , create a different situation broken wire model . Of the model longitudinal magnetization software H vector of the magnetic field strength , magnetic flux density B vector magnetic properties to map out the contours and curves . Comparison , the smaller the value of the lift-off of the sensor , the more obvious changes in the broken wire at the magnetic induction B on the magnetic properties of the different simulation models of the broken wire . More broken wires , the greater the leakage magnetic field of the magnetic induction B . Second , the application of Matlab write the EMD algorithm rope detection signal processing . On IMF analysis of the function of the different eigenmodes algorithm program can be effectively isolated from the original high-frequency noise and signal trend term . The experiments show that the algorithm program effectively broken wire signal wire rope from the original detection signal extracted .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metallurgy ( Physical Metallurgy ) > Analytical tests of the metal (Metal Testing and Materials ) > Physical test method > NDT > Magnetic flaw detection
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