论文信息 - Laser infrared photothermal radiometric depth profilometry of steels and its potential in rail track evaluation

Laser infrared photothermal radiometric depth profilometry of steels and its potential in rail track evaluation

Laser Infrared Photothermal Radiometry has been utilized for several thermal-wave inverse-problem NDE applications. These include depth profilometry of steels and rails and scanning tomography of sub-surface defects in steels. Further, a computational algorithm has been refined to address the ill-posedness of the thermal-wave inverse problem. As a result, depth profiles of case-hardened steels, railway track heads from the field, and machined sub-surface hole thermal-diffusivity images have been reconstructed successfully using this emerging NDT technology.

[1] Andreas Mandelis,et al. Generalized methodology for thermal diffusivity depth profile reconstruction in semi‐infinite and finitely thick inhomogeneous solids , 1996 .

[2] Andreas Mandelis,et al. Photoacoustic frequency-domain depth profilometry of surface-layer inhomogeneities: Application to laser processed steels , 1992 .

[3] Andreas Mandelis,et al. Image-enhanced thermal-wave slice diffraction tomography with numerically simulated reconstructions , 1997 .

[4] Andreas Mandelis,et al. Computational thermal‐wave slice tomography with backpropagation and transmission reconstructions , 1993 .

[5] Gert Goch,et al. Experimental results of photothermal microstructural depth profiling , 1995 .

[6] Andreas Mandelis,et al. Depth profilometry of near-surface inhomogeneities via laser-photothermal probing of the thermal diffusivity of condensed phases , 1994 .

[7] Andreas Mandelis,et al. Application of a generalized methodology for quantitative thermal diffusivity depth profile reconstruction in manufactured inhomogeneous steel-based materials , 1998 .

[8] L. Mannik,et al. Non-destructive depth profiling of laser-processed Zr-2.5 Nb alloy by IR photothermal radiometry , 1992 .