PASSIVE AND ACTIVE MAGNETIC SENSING TO CHARACTERIZE CORROSION OF METALS

Autor:	G. E. Gallo, J. S. Popovics, P. L. Chapman, Donald O. Thompson, Dale E. Chimenti
Rok vydání:	2009
Předmět:	Materials science Magnetic flux leakage chemistry.chemical_element Active sensing Engineering physics Magnetic sensing Passive sensing Magnetic field Corrosion law.invention chemistry law Aluminium Eddy current Electronic engineering
Zdroj:	AIP Conference Proceedings.
DOI:	10.1063/1.3114117
Popis:	Corrosion is a serious and costly problem for the world’s infrastructure. Traditional non‐destructive methods have proven to be useful in determining extent and rate of corrosion; however they are limited by the need to electrically connect to the inspected metal. Magnetic sensing is proposed as a way to overcome these limitations. Preliminary results are presented here on the use of GMR magnetic field sensors to passively and actively detect corrosion of aluminum and steel plates. Passive sensing seems particularly useful to identify localized active corrosion on aluminum, while active sensing appears useful to identify active corrosion in steel.
Databáze:	OpenAIRE
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