An eddy current coil arrangement that does not compare two sections of a specimen is called?

An eddy current coil arrangement that does not compare two sections of a specimen is termed an absolute coil arrangement. This configuration is designed to measure the electrical conductivity or impedance of a material without the need for comparing it to a reference or another section of the same specimen.

In an absolute arrangement, the coil generates an eddy current in the material being tested, and changes in material properties, such as thickness, conductivity, or surface condition, impact the response of the coil directly. This allows for a straightforward measurement that reflects the characteristics of the specimen in question.

Understanding this concept is critical in the field of nondestructive testing, as absolute measurements can provide direct information about material integrity and can be particularly useful in applications where comparative data is not available or necessary.