Corrugated pipe grouting quality detection device and method based on synthetic aperture and information entropy

Abstract

The invention discloses corrugated pipe grouting quality detection device and method based on synthetic aperture and information entropy. Echo information is processed so that an internal structure of concrete is obtained; received ultrasonic echo signals are subjected to dynamic focusing processing by using a synthetic aperture imaging method, echo signals containing defects are processed by combining with an information entropy algorithm, defect information is extracted, the defects are judged, a defect image is reconstructed, and information such as the defects inside a concrete structure is well extracted in a daily environment, so that quality monitoring and maintaining are carried out on the concrete structure such as a bridge or building are effectively carried out, the reliability is high, and actual popularization and use are facilitated.

Description

technical field [0001] The invention discloses an ultrasonic nondestructive testing device and method for corrugated pipe grouting quality based on synthetic aperture and information entropy for prestressing concrete structures, and belongs to the technical field of ultrasonic testing and analysis. Background technique [0002] In recent years, bridge collapse accidents have occurred frequently in China. It is imperative to improve the quality inspection technology of bridges and other concrete structures and conduct safety assessments for construction projects that may have potential safety hazards. The detection of pipe grouting quality is one of the key points. Whether the grouting is compact or not will directly affect the overall strength and durability of prestressed components. [0003] The traditional detection of grouting quality mainly depends on the supervision site to observe the grouting situation during the grouting process, so as to judge whether the quality o...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of concrete itself, the attenuation of high-frequency bands is relatively large, and the directivity of waves propagating in concrete is also poor. At the same time, it will be accompanied by the influence of random noise in daily detection. The accuracy and precision of the device and method detection are still unable to meet the engineering requirements, and missed judgments and misjudgments often occur in actual measurements

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