The Reference Signal of Geomagnetic Field for MMM Expert Systems

Abstract:

The first step of a methodological approach to the validation of the metal magnetic memory (MMM) method in non-destructive testing (NDT) applications and in systems used for the diagnosis of early stages of material fatigue in mechanical constructions (structural health monitoring, SHM, and prognosis health management, PHM) has been presented in the paper. The study is focused on the properties of the external natural source of magnetisation of the object under MMM examination and the impact of its components. The precise data of the Earth's geomagnetism measurements (from ground stations and satellites) and the revised model of the Earth's magnetism can be applied in order to calibrate high sensitive magnetic field sensors, validate measurement results and extend the functional capacity of the MMM method.

• Periodical: Key Engineering Materials (Volume 518)
• Pages: 384-395
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.518.384
• Online since: July 2012
• Authors: Miroslaw Witoś
• Keywords: Geomagnetic Field, Magneto-Mechanical Effects, Numerical Model, SHM

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