Influence of excitation current characteristics on sensor sensitivity of permeability testing technology based on constant current source

DOI

10.2991/iceesd-18.2018.210How to use a DOI?

Keywords

nondestructive testing; permeability testing; excitation source; detection sensor; detection sensitivity

Abstract

The permeability testing technology is a kind of non-destructive testing method, which based on the change of permeability, can detect the stress concentration state and the degree of fatigue damage for ferromagnetic samples. The detection sensor based on the constant current source has higher detection sensitivity, which overcomes the current negative feedback effect caused by the change of the magnetic circuit impedance of the ordinary constant voltage source. According to the principle of permeability detection, the influence of excitation current frequency, excitation current amplitude on the detection sensitivity were studied. The study shows that the detection sensitivity is related to excitation frequency, which exists extremes with the changing relationship of frequency; The detection sensitivity increases with the increase of excitation current, and shows a linear relationship. The research can provide reference for the development of high sensitivity magnetic permeability detector.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xianzhi Ren
AU  - Shangkun Ren
AU  - Qingquan Fan
PY  - 2018/05
DA  - 2018/05
TI  - Influence of excitation current characteristics on sensor sensitivity of permeability testing technology based on constant current source
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 1149
EP  - 1153
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.210
DO  - 10.2991/iceesd-18.2018.210
ID  - Ren2018/05
ER  -