. . . "2009-01-01+01:00"^^ . "23"^^ . "0"^^ . "Nondestructive measurement of steel surfaces decarburization by magnetic methods"@en . "23"^^ . "Nedestruktivn\u00ED m\u011B\u0159en\u00ED stavu oduhli\u010Den\u00ED povrchu ocel\u00ED pomoc\u00ED magnetick\u00FDch metod"@cs . "3076"^^ . "3076"^^ . "2011-12-31+01:00"^^ . . . "1"^^ . . "1"^^ . . . . "C\u00EDlem projeku je optimalizovat magnetick\u00E9 metody (Magnetick\u00E9 adaptivn\u00ED testov\u00E1n\u00ED a Barkhausen\u016Fv \u0161um) pro \u00FA\u010Dely zkou\u0161ek oduhli\u010Den\u00ED a nahradit tak dne\u0161n\u00ED p\u0159ev\u00E1\u017En\u011B destruktivn\u00ED testy oduhli\u010Den\u00ED povrchu ocel\u00ED magnetickou nedestruktivn\u00ED kontrolou."@cs . . "oduhli\u010Den\u00ED, ocel, povrchy, Magnetick\u00E9 adaptivn\u00ED testov\u00E1n\u00ED, Barkhausen\u016Fv \u0161um"@en . . . "Decarburization (DCB) shortens fatigue lifetime of steel construction elements substantially. Limiting values and destructive tests of DCB make nowadays basis of technical conditions for production of many steel parts. The aim of the present project is to optimize magnetic methods (Magnetic Adaptive Testing - MAT and Barkhausen Noise - BHN) for nondestructive tests of DCB and to discover correlations between the measured magnetic data and the parameters of DCB. First we identify optimum magnetic descriptors sensitive with respect to the DCB on laboratory series of conveniently shaped samples. In the second part of the project, the contemporarily developed testing heads allow to optimize detection of DCB parameters on real industrial parts. We developed the MAT-method lately. Optimization of BHN measurement and integration of MAT and BHN in a single testing head is a program of a present post-doctoral GACR project of dr.Stupakov. Each of the optimized methods and the more their combination, can offer an efficient nondestructive test of the industrially dangerous steel surface DCB."@en . .