When using which method is it possible to separate the conductivity variable from the permeability and dimensional variables?

The premise of this question relates to the separation of the conductivity variable from the permeability and dimensional variables while measuring certain properties in non-destructive testing, specifically in electromagnetic testing.

Each of the methods listed—vector-point, ellipse, and linear time-base—can be applied to analyze material properties in such a manner that allows for the independent assessment of conductivity. When conducting tests using these methods, parameters related to material structure (permeability and dimensions) can be quantified separately from the electrical properties, such as conductivity.

For instance, in the vector-point method, measurements can be made at different points to create a vector field, providing insights into how the material responds to electromagnetic fields, which affects conductivity and permeability in a nuanced way. The ellipse method can visually represent the relationship between conductivity and other properties, allowing for analytical separation. Similarly, the linear time-base method allows for temporal analysis of signals, which aids in distinguishing the influence of various material characteristics.

While not every method may be equally effective for every application or material type, the question implies a general capability of all the mentioned methods to separate these variables, highlighting their versatility in electromagnetic testing applications.