METHOD FOR DETERMINING COMPONENTS OF TENSOR OF MECHANICAL STRESSES IN PRODUCTS FROM FERROMAGNETIC MATERIALS Russian patent published in 2013 - IPC G01L1/12 

FIELD: measurement equipment.

SUBSTANCE: method involves a clamp-on transformer converter with magnetising and measuring windings, for which the product acts as a section of a magnetic chain. A magnetic field is created in the product, which is directed along axis X₁, and increments of signals of measuring windings, which are proportional to increments of induction along axes X₁ and X₂, are determined. Then, magnetic field is created in the product, which is directed along axis X₂, and increments of signals of those measuring windings are determined again. Components of the tensor of stresses are calculated as per formulae. First, calibration of the converter is performed on a specimen made from the same material as the test product.

EFFECT: enlarging informativity of monitoring owing to determining individual components of a tensor of mechanical stresses caused by an operating load.

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