2021 №07 (04) DOI of Article
2021 №07 (06)

The Paton Welding Journal 2021 #07
The Paton Welding Journal, 2021, #7, 24-29 pages

Skin-effect in soft biological tissue and features of tissue heating during automatic bipolar welding

V.G. Solovyov, Yu.M. Lankin and I.Yu. Romanova

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The skin-effect that occurs in the electric circuit at high-frequency electrosurgery, including electric welding of soft biological tissues (SBT) with electrodes for bipolar welding, is of interest to researchers as a possible source of considerably uneven heating of SBT in automatic welding. Mathematical study of electrical and thermal processes in automatic bipolar welding was performed, taking into account and ignoring the impact of skin-effect at the frequency of 300 kHz. It was determined that in biological tissue the skin-effect causes uneven heating to a smaller degree. The main reasons that influence the unevenness of heating are the presence of sharp ridges on the surface of electrodes that contact the tissue, degree of SBT compression by the electrode clamps, length of SBT compressed between the electrodes, and also duration of the process of SBT heating. 13 Ref., 6 Figures.
Keywords: skin-effect, bipolar electrodes, electric welding of soft tissues, biological tissue, anisotropy of specific conductivity

Received 23.03.2021


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