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Ultrasonic transducer clamp for detecting convex R region of composite material

A technology of ultrasonic transducers and composite materials, which is applied to the analysis of materials, the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, instruments, etc., which can solve the problem of affecting the detection effect, missing detection, and difficulty in ensuring that the transducer forms a stable ultrasonic detection Signal and other problems, to avoid missed detection or misjudgment, improve the detection effect

Active Publication Date: 2013-12-18
BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the attitude and position of the transducer are completely controlled by the operator's manual suspension, it is difficult to ensure a stable positional coupling between the transducer and the surface of the convex R-zone of the tested composite material in the entire axial and arc directions. Therefore, it is difficult to ensure that the transducer forms a stable ultrasonic detection signal in the convex R area of ​​the composite material to be detected, which seriously affects the detection effect and easily leads to missed detection or misjudgment

Method used

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  • Ultrasonic transducer clamp for detecting convex R region of composite material
  • Ultrasonic transducer clamp for detecting convex R region of composite material
  • Ultrasonic transducer clamp for detecting convex R region of composite material

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Experimental program
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Embodiment

[0024]The included angle formed by the adjacent two sides of the protruding R area of ​​the composite material structure to be tested is 90°, and the included angle of the edge line of the notch 4b of the guide plate 4 is selected to be 90°, and the ultrasonic instrument of the composite material is selected from the MUT series of instruments. After a series of practical engineering applications on multiple batches and specifications of the actual composite material structure convex R area ranging from 3000mm to 5000mm in length and 1000mm to 3000mm in width, good actual detection results have been achieved.

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Abstract

The invention belongs to a nondestructive detection technology for a composite material structure, and relates to an ultrasonic transducer clamp for detecting a convex R region of a composite material. The ultrasonic transducer clamp is characterized by consisting of a guide frame (3), a transducer seat (7) and a locking handle (8); and the guide frame (3) consists of two guide plates (4) with the same structure, two connecting pins (5) and four screws (6). Through the ultrasonic transducer clamp for detecting the convex R region of the composite material, a transducer and the surface of the convex R region of the detected composite material can form stable position coupling in the whole axial direction and arc direction, so that stable ultrasonic detection signals are formed, the detection effect is improved, and missing detection or error judgment is avoided.

Description

technical field [0001] The invention belongs to the composite material structure non-destructive testing technology, and relates to an ultrasonic transducer fixture used for testing the convex R area of ​​the composite material. Background technique [0002] With the wide application of composite materials in aviation, aerospace, civil aviation, transportation, construction, electric power and other industrial fields, many key engineering structures and complex structures based on structural design and structural manufacturing of composite materials have been continuously installed and applied in engineering. Considering structural design or load bearing, various convex R-zones will be formed in the transition zone or connection part of this type of structure, which is an inaccessible zone in non-destructive testing. To the very important structural connection and load distribution and bearing effect, in engineering, it is required to carry out non-destructive testing on the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/22
Inventor 刘松平刘菲菲白金鹏曹正华李乐刚孟秋杰史俊伟
Owner BEIJING AERONAUTICAL MFG TECH RES INST