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Micromagnetic methods

Micromagnetic materials characterisation is based on the correlation between the magnetic properties of ferromagnetic materials and their mechanical-technological characteristics, which depend on the microstructure. Generally, micromagnetic measuring devices contain a magnetisation unit, a probe to capture the magnetic response of the material and a unit for measurement control and data processing (usually a PC). Depending on the design of the magnetisation unit as well on the measurement parameters, different material depths and areas can be investigated. Commercial micromagnetic NDT devices use different effects in order to describe the material condition. Within NOMAD the following methods based on several effects will be used: