The MIRA ultrasonic tomography scanner uses a combined detection synthetic aperture focusing technology to achieve focus on each point in the half space. The data set consists of the information collected by all measurement pairs of the instrument antenna. As a result, a cross-sectional view of the test body is generated, in which different reflection intensities are reflected in different colors (depending on the selected color palette) MIRA can be used to check the integrity of the building structure. The thickness of concrete components can reach 2m, and the thickness of reinforced concrete components can reach 80cm. It can find foreign bodies, holes, voids, and points of concrete, reinforced concrete or natural stones Layers, filling leaks, cracks, etc. In addition to applications in the field of construction, MIRA is also widely used in dams, bridges and tunnels, railways and subways.
The following is a model of the Provincial Institute of Water Resources and Hydropower Research. This model is a three-step ladder.
沿图示检测面X方向布置8列，Y方向布置5排，共40个测点 Arrangement of measuring points: 8 rows in the X direction and 5 rows in the Y direction, a total of 40 measuring points
横向X方向间距设置为200mm、纵向Y方向间距设置为100mm，此设置用于IntroView 3D软件进行图像拼接。 Note: The horizontal X-direction spacing is set to 200mm, and the vertical Y-direction spacing is set to 100mm. This setting is used for image stitching by IntroView 3D software.
parameter settings: Automatic test wave speed V = 3330m / s 显示深度范围：750mm（已覆盖整个模型厚度范围） Frequency: 50kHz Display depth range: 750mm (the entire model thickness range has been covered)
Analysis of measurement results: B / C / D / 3D view of MIRA concrete model inspection
The figure can clearly reflect the location and distribution of faults and hole defects in the model.