| Autor: |
Syasko, Vladimir, Solomenchuk, Pavel, Gur'eva, Tamara, Filippov, German |
| Předmět: |
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| Zdroj: |
CINDE Journal; Apr-Jun2022, Vol. 43 Issue 2, p13-13, 1p |
| Abstrakt: |
In the design of the elements of the switching equipment for power supply and protection of the superconducting magnetic system of the ITER thermonuclear reactor, powerful resistor assemblies are used. All welds must undergo mandatory automatic inspection after the manufacture of resistive assemblies. In accordance with the requirements, one hundred percent testing of end joint involves automatic scanning with a non - contact measuring probe and determination of the penetration depth-the distance at which the welded plates are a single whole after the welding process with a non-consumable electrode arc welding in an inert gas environment. To solve this problem, it is optimal to use the eddy current phase-sensitive method. To reduce the magnetic permeability of the metal of the plates and the weld, in order to increase the penetration depth of eddy currents, magnetization is used to saturate the controlled zone using an electromagnet. Based on research and modeling, an eddy current transducer with an electromagnet was developed that magnetizes the weld with a constant magnetic field (induction of at least 2.2 T), which ensures control of the penetration depth of the weld up to 1.4 mm at an excitation current frequency of 50 kHz. The dimensions and mass of the eddy-current transducer are optimized in finite element modeling using automatic algorithms. The eddy-current transducer is used as part of a 6-axis manipulator. To cool the electromagnet, liquid cooling and a special laying of wire turns are used. The principles and results of modeling and the main technical characteristics of the developed eddy-current transducer, a robotic six-axis scanning system and an automatic processing and decision-making system are described in detail, the main technical characteristics are given. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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