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Critical refraction longitudinal wave detection component inside tangential stress assistant device

A technology for detecting components and critical refraction, which is applied in the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids and other directions, achieving good general performance and large amplitude effects

Inactive Publication Date: 2008-02-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When measuring, it is impossible to measure with the best incident angle of LCR wave

Method used

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  • Critical refraction longitudinal wave detection component inside tangential stress assistant device
  • Critical refraction longitudinal wave detection component inside tangential stress assistant device

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Experimental program
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Embodiment Construction

[0030] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0031] As shown in Figure 2, the present invention is made of two parts, the bottom 1 of organic glass, the upper part 2 of organic glass. The lower part 1 is shaped like a dam with a large bottom and a small top, and the upward slope forms a concave cylindrical surface 3 . Top 2 becomes U-shaped 5, and one side is open, is convenient to change the receiving and emitting probe of ultrasonic wave, and another side 7 is closed, and one side of sealing becomes outward protrusion cylinder 4. The protruding cylindrical surface 4 of the upper part 2 coincides with the concave cylindrical surface 3 of the lower part 1 , and the upper part 2 can slide on the concave cylindrical surface 3 of the lower part 1 . Fill high-viscosity liquid coupling agent between the upper part 2 and the lower part 1 to eliminate the gap in the contact area and avoid the attenuation caused by the...

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Abstract

The utility model discloses an auxiliary device of internal tangential stress for critical refraction longitudinal wave detecting components, which is characterized in that: the inclined surface of the lower part (1) upward presents a concave cylindrical surface (3) and the inclined surface of the upper part (2) downward presents an outer convex cylindrical surface (4). The outer convex cylindrical surface (4) of the upper part (2) is meshed with the concave cylindrical surface (3) of the lower part (1). The upper part (2) can slide on the concave cylindrical surface (3) of the lower part (1). An indexing round graduation (6) is carved on borderline end face of the outer convex cylindrical surface (4) and the concave cylindrical surface (3). The receiving transducer and the transmitting transducer of ultrasonic wave are fixed at the upper part (2). The utility model has the advantages of overcoming the failures that different wedge structure is needed for measuring different components under test and the best incident angle can be get for the same kind of components under test for prior art, providing a micro angle-adjusting with good versatility, meeting the best angle incidence, receiving the biggest LCR wave amplitude device and being widely applied in stress measuring field.

Description

technical field [0001] The invention relates to a measuring device, in particular to an auxiliary device for ultrasonic measurement. Background technique [0002] Ultrasonic testing is the most widely used, most frequently used and fast-growing non-destructive testing technology at home and abroad, and has become one of the most commonly used methods for non-destructive testing and evaluation of materials and structures. The ultrasonic method is based on the acoustoelastic principle that the ultrasonic sound velocity changes with the change of the stress state, and the change of the material stress is obtained by detecting the change of the ultrasonic wave velocity in the material. When a workpiece is subjected to a stress load, the properties of the material inside it also change, affecting the speed at which ultrasonic waves travel through it. The stress condition in the workpiece can be evaluated by measuring the change of propagation velocity by ultrasonic waves (usuall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07G01N29/04
Inventor 丁杰雄郭辉牟萍戴仙金李健根杨修浩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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