Some Particularities of EC Crack Detection in Aluminum using an Asymmetrical GMR-Coil Configuration

Autor:	Eduardo Ramirez Pacheco, José Manuel Hallen López, José Hiram Espina Hernández, José Alberto Pérez Benitez, Francisco Caleyo Cereijo
Rok vydání:	2015
Předmět:	Gmr sensor Materials science General Computer Science Acoustics chemistry.chemical_element Stability (probability) law.invention chemistry Excitation current Aluminium Electromagnetic coil law Eddy current Electronic engineering Electrical and Electronic Engineering Excitation Voltage
Zdroj:	IEEE Latin America Transactions. 13:1331-1339
ISSN:	1548-0992
DOI:	10.1109/tla.2015.7111986
Popis:	This paper presents experimental results related to an asymmetrical coil - GMR configuration for the detection of surface cracks using eddy currents. The system is evaluated for three different excitation frequencies and the relationship between the extracted parameter (DV) from the GMR output voltage and the crack's dimension is validated. The analysis of the presence of the intermediate peak in the output voltage of the GMR sensor is performed. The stability of the excitation current source is presented and it is demonstrated that the presence of the intermediate peak does not have a significant influence on the relationship of DV with the depth of the crack.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3de290af9b427d6f76714663fce4e367 https://doi.org/10.1109/tla.2015.7111986 Zobrazit plný text záznamu