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Statistical inverse based electric/supersonic double-mode content boundary reconstruction method

A technology of inclusions and boundaries, applied in the field of non-destructive testing of inclusion boundaries, can solve problems such as difficult to obtain the complete outline of inclusion boundaries

Active Publication Date: 2019-06-28
TIANJIN UNIV
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Problems solved by technology

The quality of ultrasound reflection imaging is mainly limited by the number of ultrasound probes and the amount of reflection projection data. When the number of ultrasound probes is limited, it is difficult for single-mode ultrasound imaging to obtain a complete outline of the inclusion boundary

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  • Statistical inverse based electric/supersonic double-mode content boundary reconstruction method
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  • Statistical inverse based electric/supersonic double-mode content boundary reconstruction method

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Embodiment Construction

[0026] The implementation steps of the method involved in the present invention are described in detail below, which is intended to be described as an embodiment of the present invention, and is not the only form of implementation of the present invention. Other embodiments that can achieve the same structure and function should also be included in the scope of the present invention Inside.

[0027] In a specific embodiment, the fusion of ERT and URT is adopted, and the test object is bubble reconstruction in gas-liquid two-phase flow. The fusion system sensors involved are as figure 1 As shown, the ERT system includes 16 electrodes, which are evenly distributed on the inner wall of the pipeline; the URT system includes 16 ultrasonic probes, which are evenly distributed on the inner wall of the pipeline; the ERT and UTT sensors are located in the same section to ensure that the measurement target is the same interface. The specific implementation process of this embodiment is...

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Abstract

The invention relates to a statistical inverse based electric / supersonic double-mode content boundary reconstruction method. According to the method, a radial shape model is used to implement parameterized representation of content boundary to be reconstructed, namely the target boundary, an electrical imaging model is used to construct a likelihood model for shape factor estimation, a supersonicreflection imaging model is used to construct a prior model of shape factor estimation, a maximal posteriori estimate method is used to solve an optimal shape factor, and the content boundary is reconstructed.

Description

technical field [0001] The invention belongs to the technical field of electrical / ultrasonic dual-mode fusion imaging, and relates to a method for non-destructive testing of inclusion boundaries. Background technique [0002] The detection of inclusions widely exists in the fields of industrial production control and biomedical diagnosis, such as the detection of gas-liquid two-phase bubbly flow bubbles in pipelines, the detection of defects in material flaw detection, human tumor detection, and lung function monitoring. Accurate reconstruction of inclusion boundaries is of great significance for ensuring production safety, improving production efficiency, and improving the accuracy of disease diagnosis. Electrical Tomography (ET for short), including: Electrical Resistance Tomography (ERT for short), Electrical Capacitance Tomography (ECT for short), Electrical Impedance Tomography (Electrical Impedance Tomography for short), EIT), Electromagnetic Tomography (EMT for short...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/44G01N27/00
Inventor 董峰梁光辉任尚杰
Owner TIANJIN UNIV
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