Conformal variable curvature electromagnetic ultrasonic probe and measuring method thereof
An electromagnetic ultrasonic and variable technology, applied in the direction of measuring devices, measuring instrument components, instruments, etc., to achieve the effect of simple and fast operation, high spatial measurement resolution, and no need for couplant
Active Publication Date: 2020-12-08
DALIAN UNIV OF TECH
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[0006] In order to solve the problems in the existing methods and consider the ultrasonic measurement requirements of curved surface parts, the present invention provides an electromagnetic ultrasonic probe with variable curvature along with the shape and its measurement method
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] Such as Figure 1-Figure 2 As shown, flexible magnets 2 with different structures are selected according to five different flexible excitation coils 1, and a total of five electromagnetic ultrasonic probes 3 for non-destructive testing of curved surface parts are designed. In this embodiment, with the second racetrack-shaped spiral coil (such as figure 1 As shown in (b)) as an example, and the flexible magnet corresponding to the racetrack-shaped helic...
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The invention belongs to the technical field of ultrasonic measurement, and provides a conformal variable curvature electromagnetic ultrasonic probe and a measurement method thereof. The probe comprises a flexible excitation coil, a flexible magnet, a flexible shell and an MMCX connector. The method comprises the following steps: firstly, designing flexible excitation coils with five configurations; secondly, designing five corresponding magnet distribution structures; thirdly, designing a flexible silica gel shell, and integrating a flexible coil and a flexible magnet; finally, controlling anelectromagnetic ultrasonic probe through a clamp, and guaranting that the probe is always tightly attached to a material curved surface in the automatic measurement process. According to the invention, five different types of conformal variable curvature electromagnetic ultrasonic probes are designed, the structure is compact, the spatial measurement resolution is high, a coupling agent is not needed, and the operation is simple and rapid; the ultrasonic sound axis is consistent with the local law of the measured curved surface, and the measurement precision and the signal-to-noise ratio of signals are improved; selection optimization application can be carried out for different measurement parameters, and ultrasonic measurement of thickness, stress, defects and other multi-physical geometrical parameters is achieved.
Description
technical field [0001] The invention belongs to the technical field of ultrasonic measurement, in particular to an electromagnetic ultrasonic probe with variable curvature along with the shape and a measurement method thereof. Background technique [0002] Curved surface parts are a typical type of high-end equipment in aerospace and other fields. In order to accurately obtain key information such as manufacturing quality, material properties, and safety life of such parts, ultrasonic methods are often used for quantitative evaluation during processing or service. As a commonly used non-destructive testing method, ultrasound has the advantages of wide application range, fast measurement, simple device, low cost, safety and harmlessness, etc. It has been widely used in the measurement of multi-physical geometric parameters such as thickness, defects and residual stress. [0003] In order to avoid the influence of the curvature of curved parts on ultrasonic propagation, most ...
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IPC IPC(8): G01D5/48G01D11/00
CPCG01D5/48G01D11/00
Inventor 刘海波刘天然王永青杨佩勋薄其乐李特刘阔
Owner DALIAN UNIV OF TECH