Flow type defect detection method based on diamagnetic levitation principle

Abstract

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.

Description

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AI Technical Summary

Benefits of technology

The technical effect of this patented solution overcomes previous methods that were complex or expensive for detecting flaws on objects like metal pipes without causing damage during their manufacturing process. It involves creation of a steady state range between different points where there are no cracks while also allowing for accurate measurement of these differences along its length. This allows us to calculate distribution of any faulty areas inside the pipe based upon specific measurements taken from images collected at certain locations around it's circumference.

Problems solved by technology

The problem addressed in this patented technology relates to developing an effective way to inspect large objects without damaging their appearance or causing damage during manufacturing processes that require frequent quality control checks on these items. Current methods have drawbacks such as requiring expensive machinery, slow reaction times due to factors like ghosting effects caused by small particles near certain areas, etc., making it challenges to achieve accurate and reliable automated systems capable of quickly identifying hidden flaws within complex products.

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