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Information × Registration Number 0221U104662, 0120U102724 , R & D reports Title Development of a method of ultrasonic control of the end welding of copper cylindrical parts using a flaw detector USD-50 IPS popup.stage_title Head Salenko Olexandr F., Доктор технічних наук Registration Date 06-04-2021 Organization National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" popup.description2  The object of research is the means of ultrasonic control of the process of laser vacuum welding of copper products and methods of such control. The purpose of the work is to analyze the possibility of using special ultrasonic sensors to control the white-walled laser weld in order to establish the quality of the weld, the depth of penetration, the presence of defects and more. Research methods: theoretical substantiation of ultrasonic control means for analysis of seam quality in the wall area on a thin cylindrical product, taking into account edge effects (interference of waves, small thicknesses, etc.), use of special algorithms to improve signal informativeness. Research results. The possibility of quality control of laser vacuum welding of thin (about 1.0-2.0 mm) walls of cylindrical products by the size of the seam penetration is proved. Using special algorithms to improve the signal (by isolating the appropriate fundamental harmonics) was able to identify the presence of insufficient penetration of the seam exceeding 1.5 mm. An auxiliary device has also been developed that allows the control process to be carried out in a semi-automatic mode. Product Description popup.authors Havrushkevych Nataliia V Danyl'chenko Yuriy M. Miasnykova Nataliia L Pavlyk Petro M Salenko Oleksandr F popup.nrat_date 2021-04-06 Close