Method for ultrasonically testing coupling quality of multilayered media

Abstract

The invention relates to a method for ultrasonically testing the coupling quality of multilayered media. The method comprises the following steps: (1) setting parameters of an ultrasonic detection instrument and a probe; (2) producing a multilayered medium standard model consistent with the on-site multilayered media, and setting different coupling degrees in the standard model; (3) performing ultrasonic detection on the standard model produced in the step (2) under the set detection parameters by the ultrasonic detection instrument to obtain a standard detection atlas, and storing the standard detection atlas and the detection parameters into a computer; and (4) performing ultrasonic detection on the on-site multilayered media by the ultrasonic detection instrument, inputting a detection atlas and the detection parameters into the computer, comparing the detection atlas of the on-site multilayered media with the standard detection atlas obtained in the step (3), and automatically identifying the coupling quality of the on-site multilayered media by the computer. Compared with the prior art, the method can accurately detect the coupling quality of the multilayered media, and has the characteristics of high speed, high efficiency, and time-saving and effort-saving effects.

Description

technical field [0001] The invention relates to a method for detecting the coupling quality of a multilayer medium by ultrasonic waves, belonging to the technical field of ultrasonic detection and analysis. Background technique [0002] In the field of engineering construction, due to the long-term water and soil pressure and the aging of the structure itself, the underground structures will partially settle, crack, and deform. Therefore, it is necessary to locally reinforce these structures, such as the reinforcement and transformation of tunnel linings. Steel plates with different thicknesses are generally used for reinforcement (according to project requirements). The inner and outer layers of the steel plates are treated with various composite materials for anti-corrosion and anti-aging treatment. According to project requirements, standard molds are used to make steel plate structure reinforcements. These reinforcements are of uniform size. "Standard Parts". However, t...

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Problems solved by technology

[0007] 1. The electromagnetic wave radar method cannot be used for this detection because of the absorption effect of the steel plate; 2. The ultrasonic detection method needs to install transducers on the front and back sides of the material for detection, but the reinforcement detection of underground structures (such as tunnels) is due to the reverse side. Rock and soil, the transducer cannot be installed, so it can only be carried out on the front, and it is invalid for the reinforcement detection of underground structures; 3. Ultrasonic is used for steel structure welded joints, and weld flaw detection is only suitable for steel structure materials on the surface and the detection range is shallow. The reinforced surface of underground structures is made of anti-corrosion materials and has multi-layer media, so it is not applicable; 4. X-ray and γ-ray methods are not suitable for large-scale detection in the reinforcement of underground structures due to their harm to human body and high cost

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