Handbook on the Magnetic Examination of Welds
Woodhead Publishing Limited, 1988 - Technology & Engineering - 51 pages
"The purpose of this handbook, produced as a result of international collaboration, is to examine the basis of magnetic leakage flux testing and to review the capabilities and limitations of its application."
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active area amperes amplitude applied field strength applied magnetising field boundary surface carrier medium coil crack width crack-like defect current flow technique decreases defect direction defect height demagnetisation detecting medium diameter direct current eddy currents electric current electrical conductor electronic equipment ferromagnetic ferromagnetic materials field indicators field sensitive probes fluorescent powders flux methods g/litre geometries HWDC hysteresis loop illumination intensity increases induced voltage inspection region inspection section inspection task inspectors kA/m kAlm leakage field lnfluence lnspection longitudinal defects Magnetic field sensitive magnetic field strength magnetic flux density magnetic leakage flux magnetic particle inspection magnetic powder magnetically hard Magnetography magnitude martensitic measured in metres nomogram normal component permeability curves perpendicular powder concentration procedure pulsed current rectified residual flux density residual magnetism saturation field strength sensors skin depth spurious indications stray flux strength H stress surface breaking surface defects tangential component tape Testpieces time-varying magnetic fields virginal curve weld