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- W4385520917 abstract "The azimuth wheel-rail of large aperture radio telescope is the key component, it not only sup-ports the whole weight of the antenna, but also directly affects the pointing performance of the antenna with its surface accuracy. The whole weight of the radio telescope is hundreds or even thousands of tons, its azimuth frame rollers have great contact stress with the wheel-rail surface, repeated rolling can cause rolling contact fatigue on the wheel-rail surface, resulting in wear, cracks and other damage to the wheel-rail, and even lead to failure or fracture of the wheel-rail in serious cases, so it is very important to monitor the damage of the antenna wheel-rail. In order to visually detect the use of antenna wheel-rail surface, this paper proposed the method using electromagnetic ultrasonic detection to detect the damage of antenna wheel-rail surface for the first time. Based on the electromagnetic ultrasonic nondestructive testing principle, the simplified wheel-rail model containing wear, corrosion and crack damage is simulated. The results show that this method can effectively detect the surface damage of the antenna wheel-rail surface, and it can provide an important reference for the research of wheel-rail damage detection of large radio telescope." @default.
- W4385520917 created "2023-08-04" @default.
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- W4385520917 date "2023-08-02" @default.
- W4385520917 modified "2023-09-27" @default.
- W4385520917 title "A Method for Detecting Surface Damage of Large Reflector Antenna Wheel-Rail Based on Electromagnetic Ultrasonic Technology" @default.
- W4385520917 doi "https://doi.org/10.20944/preprints202308.0154.v1" @default.
- W4385520917 hasPublicationYear "2023" @default.
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