Kern, R.R.KernTheiner, W.W.TheinerValeske, B.B.ValeskeMeyer, R.R.Meyer2022-03-092022-03-091996https://publica.fraunhofer.de/handle/publica/326764Micromagnetic Techniques developed during the last few Years have been found to be applicable to nondestructive evaluation of the machining quality of laser hardened components. Combining information of various microstructure- and stress-sensitive parameters, an immediate estimation of relevant quality parameters can be achieved. Using a multiple regression analysis, approximation functions can be obtained to determine values of hardness, hardening depth and residual stresses. Nondestructive evaluation of process/quality parameters is demonstrated for laser-hardened components using new multiparameter sensor systems. Based on these results, a prototype of a process integrated nondestructive testing system (PINT) for total inspection of laser-hardening quality is installed. Devices using PINT to monitor relevant quality parameters for process control in other industrial hardening applications (i.e. industion/case hardening) will be soon available.enEigenspannunghardening depthhardnessHärteHärtetiefelaser beam hardeningLaserstrahlhärtungnondestructive quality monitoringresidual stress620658670conference paper