2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 4. Mamalis Intl. Symp. / Advanced Manufacturing
| Editors: | F. Kongoli, A. G. Mamalis, K. Hokamoto |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 352 pages |
| ISBN: | 978-1-987820-88-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Magnetic Permeability Measurement Device Based on Hall Effect
Spyridon Angelopoulos1; Giorgios Banis1; Xenia Vourna1; Aphrodite Ktena2; Panagiotis Tsarabaris1; Evangelos Hristoforou1; Athanasios G. Mamalis3;1NATIONAL TU OF ATHENS, Athens, Greece; 2TEI OF CHALKIDA, Chalcis, Greece; 3PC-NAE, DEMOKRITOS NATIONAL CENTER FOR SCIENTIFIC RESEARCH, Athens, Greece;
Type of Paper: Regular
Id Paper: 296
Topic: 48
Abstract:
A new, fully portable device is presented, which can be used to measure magnetic permeability and residual stress. The device is based on the use of a Hall sensor and a permanent magnet. The Hall sensor is placed at the edge of a yoke, and consists of two parallel ferromagnetic bars and a permanent magnet. As a result, its output voltage depends on the magnetic field that is produced by the magnet. If the yoke is placed near a ferromagnetic material under test, the Hall voltage output will change accordingly. The optimal placement of the Hall sensor was found through software simulations. The magnetic field measured by the Hall sensor can be correlated to the surface magnetic permeability and the residual stress tensor distribution of the ferromagnetic material under test. Calibration of the sensor was held, in order to provide accurate results. The constructed device includes the aforementioned sensing element, an Arduino-based microcontroller, an RF transmitter, a Bluetooth module, and a battery. The collected data is wirelessly transmitted to a receiving device, and consists of an Arduino-based microcontroller, an RF receiver, an LCD, and a battery. As a result, the output information can be viewed either on the dedicated device or on any other Bluetooth-compatible device (e.g. smartphone or tablet). The sensor is suitable for on-field measurements, as it is wireless, energy sufficient, robust, and conducts high-speed contactless measurements.