30 results about "Diamagnetic levitation" patented technology

The invention provides a flow type defect detection method based on a diamagnetic levitation principle. The method comprises the steps that a detection sample is placed in a prepared paramagnetic solution, a magnetic field is applied to the detection sample to achieve a levitation posture, and the density and magnetic susceptibility of the paramagnetic solution are obtained through calculation; and the detection sample, the paramagnetic solution and the magnetic field are integrally rotated, information of stable suspension pose of the detection sample in a magnetic space structural assembly at different rotating speeds is acquired, internal density distribution of the detection sample is obtained through calculation with the stable suspension pose being a boundary condition and based on amechanical equilibrium equation of equivalent gravity, diamagnetic force and centrifugal force, and contrastive analysis is carried out to obtain defect positions in the detection sample along the symmetry axis direction. A steady detection interval is constructed through a local potential energy difference principle, a liquid flow system and an external space magnetic field are utilized, stablesuspension space pose information of the detection sample is obtained by adjusting kinetic parameters of a rotary detection platform, space position information of the detection sample is obtained based on image acquisition data, and internal defect distribution of a detection object is obtained through calculation.