Dual-track ultrasonic defect positioning method and system

Abstract

The invention discloses a dual-track ultrasonic defect positioning method and a dual-track ultrasonic defect positioning system. The system comprises a dual-track ultrasonic signal transmitting circuit and a dual-path echo signal receiving circuit. The method comprises the steps: detecting a detection substance in different combination modes of an opposite measurement method and an oblique measurement method, wherein the detection routes formed by two ultrasonic detection methods are non-parallel in the same plane; extracting defect characteristics through signals received by two echo signal receiving ends, finding out two detection routes corresponding to the defect signal by analyzing the defect characteristics, and positioning the defect position according to the intersection point of the detection routes. The method is low in cost, simple in hardware circuit, reasonable in design, easy and convenient to operate and capable of achieving accurate positioning of defects.

Description

technical field [0001] The invention belongs to the technical field of modern engineering non-destructive testing, and in particular relates to an ultrasonic positioning method and system for building concrete and beam defects. Background technique [0002] Concrete is one of the most important structural materials in modern engineering buildings. In general, the evaluation and acceptance of concrete buildings is mainly the quality inspection of structural concrete buildings. The quality assessment of concrete buildings is mainly based on the two indicators of concrete strength and defects. Concrete defects refer to uncompacted areas, cavities, cracks and mud inclusions that destroy the continuity and integrity of concrete and reduce the strength and durability of concrete to a certain extent. In the actual construction process, since most of the concrete test blocks are cured indoors, they cannot represent the quality of the concrete constructed on site, and it is difficu...

AI Technical Summary

Problems solved by technology

[0005] At present, most ultrasonic non-destructive testing devices used in building concrete and beams can only detect whether there is a defect within the detection range of a certain detection point of the material to be tested in actual detection, but cannot be accurate within this detection range. The exact location of the defect

In engineering practice, since the detected defects cannot be accurately located, it is often necessary to cut off and replace the defective area as a whole, resulting in unnecessary cost losses

If the traditional defect location device is used, it will also increase the engineering investment cost, and this type of device cannot be widely used in different scenarios

Images