Non-contact measurement of impact load due to collision of ferromagnetic projectile based on electromagnetic induction

Adachi, Tadaharu; Miyara, Kohei; Ishii, Yosuke

doi:10.1016/j.ijimpeng.2021.104040

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Therefore, a two-half buckle structure was employed in the system. In order to study the effect of the magnetic core structure on the magnetic circuit, the distribution of the magnetic field is shown in Figure 3 though Ansoft Maxwell software [ 35 , 36 , 37 , 38 ] when the exciting current was 0.3 A. The simulation results show that the distribution of the magnetic field of the semi-circle structure core have great advantage in uniformity and higher magnetic induction intensity in most cases compared with the U-U structure core.…”

Section: The Proposed System For Detecting the Evaporation Ductmentioning

confidence: 99%

“…Further, when the battery of each sensor runs out and needs to be replaced, cables can let the GMI be more complicated, which can lead to high cost, short life, and hard maintenance in the high temperature and high humidity environment such as the SCS [ 33 , 34 ]. Inductively coupled power transfer (ICPT) technology is based on the principle of electromagnetics [ 35 , 36 , 37 , 38 ]. There is no direct connection between the power source and the load.…”

Section: Introductionmentioning

confidence: 99%

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A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission

Wang

et al. 2022

Sensors

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Since the evaporation duct height (EDH) only covers the antenna height of most shipborne microwave radars, mastering the EDH in advance has great significance in achieving long-range target detection. In this paper, a set of hydrological and meteorological sensors based on the gradient meteorological instrument (GMI) were built to monitor the evaporation duct of the South China Sea (SCS). However, the monitoring needed to be interrupted during the battery replacement of the sensor, which could result in the loss of some important data collection. On the basis of the inductively coupled power transfer (ICPT) technology, the resonance principle was used to compensate the inductive reactance on the closed steel ring (CSR), and the energy stored in the super capacitor was introduced for data collection and return. A novel measuring system for the detection of an evaporation duct was proposed. To avoid iterative calculation by setting the initial value of the current evaporation duct models in large-scale and multi time evaporation duct prediction and diagnosis, on the basis of the non-iterative air–sea flux (NAF) model, the EDH was obtained by introducing the K theoretical flux observation method into the atmospheric refractive index equation. Finally, preliminary experimental results are presented for the detection of evaporation duct to demonstrate the feasibility and effectiveness of the proposed system. The communication accuracy rate of the proposed system was 99.7%. The system transmission power reached 22.8 W. The research results of the NAF model adaptability showed that the mean value of the EDH was 8.7 m, which was lower than the mean EDH of the SCS. The EDH calculated by the NAF model in the unstable air–sea stratification state was slightly lower than that calculated by the NPS model. The diagnosis of the EDH by the NAF model was similar to that of the NPS model, but the calculation stability of the NAF model was better.

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