U-shaped probe for measuring coercive force

The utility model provides a U-shaped probe for measuring coercive force. The U-shaped probe comprises a magnetic core, an excitation coil and an induction coil, the magnetic core is in a U shape or a similar U shape and comprises a first magnetic core section, a second magnetic core section and a third magnetic core section which are connected in sequence, and the first magnetic core section and the third magnetic core section are parallel to each other; the exciting coil is wound on the first magnetic core section and the third magnetic core section, the number of turns wound on the first magnetic core section is M1, and the number of turns wound on the second magnetic core section is M2; the induction coil is wound on the second magnetic core section, the number of turns is N, N is smaller than M1, and N is smaller than M2. The device is suitable for stress evaluation of ferromagnetic materials, and has the advantages of high measurement speed, stable measurement result and the like; the requirement on the