The ratio of a material's flux density to a test coil's magnetizing force, (B/H), determines what property of the material?

The ratio of a material's flux density (B) to a test coil's magnetizing force (H) is a fundamental parameter that defines the permeability of the material. Permeability is a measure of how easily a magnetic field can penetrate through a material. It indicates the material's ability to support the formation of a magnetic field within itself and is crucial in applications involving magnetic fields, such as in Eddy Current Testing.

Permeability is essential for understanding how different materials respond to magnetic fields. In the context of Eddy Current Testing, materials with higher permeability can enhance the efficiency of the testing process by allowing greater magnetic field interaction, which can affect the induction of eddy currents within the material being evaluated.

This understanding is particularly important when assessing non-destructive testing methods and the integrity of materials, as it influences how the eddy currents behave in relation to material properties such as flaws or discontinuities. Thus, the relationship between flux density and magnetizing force directly leads to insights about a material's permeability.