Altpeter, I.I.AltpeterDobmann, G.G.DobmannKern, R.R.KernTheiner, W.W.Theiner2022-03-082022-03-081988https://publica.fraunhofer.de/handle/publica/315204Induction-Laser- and Case-hardening are techniques to obtain surface microstructures with high resistance against wear and tear. The contribution refers the results of micromagnetic QND-techniques to evaluate the hardening depth. Depending on the material (steels and case-iron) Barkhausen-Noise-measurements allow the detectability up to 4 mm depth whereas Incremental-Permeability-measurements are restricted to hardening-depths up to 2 mm. (IZFP)enBarkhausen-EffektEinhärtungstiefeEinsatzhärteHärtetiefeKoerzitivfeldstärkenmessungPermeabilitätsmessungPrüfung(magnetisch)620658670Quantitative hardening-depth-measurements up to 4 mm by means of micromagnetic microstructure multiparameter analysis -3MA-.Quantitative Bestimmung der Einhärtungstiefe bis zu Tiefen von 4 mm mittels mikromagnetischen Multiparameter Mikrostruktur Analyse. 3MAconference paper