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Numerical estimation of burn degree of skin tissue using the sensitivity analysis methods

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The numerical analysis of thermal processes proceeding in the skin tissue due to external heat flux is presented. Heat transfer in the skin tissue was assumed to be transient and one-dimensional. Thermo-physical parameters of successive skin layers are different, at the same time in subdomains of dermis and subcutaneous region the internal heating resulting from blood perfusion and metabolism is taken into account. The degree of the skin burn can be predicted on the basis of the so-called Henriques integrals. The paper deals with the sensitivity analysis of these integrals with respect to the thermophysical parameters. In numerical computations, the boundary element method has been used. In the final part of the paper, the results of computations are presented.
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Bibliogr. 11 poz., tab., wykr.
  • Silesian University of Technology, Gliwice, Poland
  • Silesian University of Technology, Gliwice, Poland
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  • [2] DAVIES C.R., SAIDEL G.M., HARASAKI H., Sensitivity analysis of one-dimensional heat transfer in tissue with temperature-dependent perfusion, Journal of Biomechanical Engineering, Transactions of the ASME, 1997, 119, 77–80.
  • [3] DEMS K., Sensitivity analysis in thermal problems. I. Variation of material parameters within fixed domain, Journal of Thermal Stresses, 1986, 9, 303–324.
  • [4] HENRIQUES F.C., Studies of thermal injuries. V. The predictability and the significance of thermally induced rate process leading to irreversible epidermal injury, Archives of Pathology, 1947, Vol. 43, 489–502.
  • [5] JASIŃSKI M., Modelling of biological tissue heating process (in Polish), Ph.D. Thesis, Silesian University of Technology, Gliwice, 2001.
  • [6] MAJCHRZAK E., Numerical Modelling of Bio-Heat Transfer Using the Boundary Element Method, Journal of Theoretical and Applied Mechanics, 1998, 2, 36, 437–455.
  • [7] MAJCHRZAK E., Boundary element method in heat transfer (in Polish), Publ. of the Technological University of Częstochowa, Częstochowa, 2001.
  • [8] MAJCHRZAK E., JASIŃSKI M., Sensitivity study of burn predictions to variations in thermophysical properties of skin, Advances in Boundary Element Techniques II, Hoggar, Geneva, 2001, 273–280.
  • [9] KLEIBER M., ANTUNEZ H., HIEN T.D., KOWALCZYK P., Parameter sensitivity in nonlinear mechanics. Theory and finite element computations, J. Wiley & Sons, Ltd., England, 1997.
  • [10] STAŃCZYK M., TELEGA J.J., Modelling of heat transfer in biomechanics – a review. Part I. Soft tissues, Acta of Bioengineering and Biomechanics, 2002, Vol. 4, No 1, 31–61.
  • [11] TORVI D.A., DALE J.D., A finite element model of skin subjected to a flash fire, Journal of Biomechanical Engineering, 1994, Vol. 116, 250–255.
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