What type of flux is NOT included when measuring the magnetic field in ferrous materials?

When measuring the magnetic field in ferrous materials, static flux is not included as it refers to the magnetic field that remains constant over time without any changes in intensity or direction. In contrast, induced flux, leakage flux, and residual flux all pertain to physical changes in the magnetic field associated with external influences or internal material characteristics.

Induced flux is generated when an external magnetic field interacts with the material, creating magnetization. Leakage flux refers to the portion of the magnetic field that does not follow the intended path in the magnetic circuit, often escaping into the surrounding air. Residual flux is the magnetic field that remains in the material after the external magnetizing force has been removed.

Since static flux does not change and does not contribute to the dynamic evaluation of the properties of the material in the context of magnetic testing, it is correctly identified as the type of flux not included in these measurements.