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2021 №07 (04) DOI of Article
10.37434/as2021.07.05
2021 №07 (06)

Automatic Welding 2021 #07
Avtomaticheskaya Svarka (Automatic Welding), #7, 2021, pp. 27-32

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

V.G. Solovyov, Yu.M. Lankin, I.Yu. Romanova
E.O. Paton Electric Welding Institute. 11 Kazymyr Malevych Str., 03150 Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The skin-effect that occurs in the electrical 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 Fig.
Keywords: skin-effect, bipolar electrodes, electric welding of soft tissues, biological tissue, anisotropy of specific conductivity


Received: 23.03.2021

References

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