Low frequency narrow pulse ultrasonic transducer

An ultrasonic transducer and narrow pulse technology, applied in ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, infrasonic diagnosis, etc., can solve the problems of inability to guarantee the uniformity of impregnation, the difficulty of the backing preparation process, and the increase of the proportion of tungsten powder. , to achieve the effect of reducing after-vibration, simple composition, and suppressing backward radiated sound waves

Active Publication Date: 2016-03-23
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method does not guarantee uniformity of impregnation, only the end portion is removed and applied
The above shows that simply increasing the proportion of tungsten powder to achieve the purpose of increasing the backing will bring great difficulty to the preparation process of the backing

Method used

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  • Low frequency narrow pulse ultrasonic transducer
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Embodiment Construction

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Abstract

The invention relates to a low-frequency narrow-pulse ultrasonic transducer. The low-frequency narrow-pulse ultrasonic transducer comprises a casing, a matching layer, a piezoelectric element layer, a backing layer, the port portion arranged on the casing and a matching circuit connected between the port portion and the backing layer, wherein the matching layer, the piezoelectric element layer and the backing layer are arranged in the casing and connected in sequence, and the backing layer is in a bowl-shaped shape with the continuously-changing reflection face gradient. The low-frequency narrow-pulse ultrasonic transducer can effectively inhibit backward radiated sound waves and reduce residual vibration.

Description

technical field [0001] The invention relates to a low-frequency narrow-pulse ultrasonic transducer, which is mainly used in the fields of medical ultrasonic diagnosis and industrial non-destructive testing with large sound attenuation. Background technique [0002] In medical ultrasonic diagnosis and industrial non-destructive testing with large sound attenuation, in order to improve the detection resolution, the after-vibration signal of the ultrasonic transducer needs to be as small as possible under pulse excitation, and it is hoped that the attenuation of the ultrasonic wave in the detection object should not be too large, because The higher the frequency of the transducer, the greater the attenuation of ultrasonic waves, so it is very important to design and develop low-frequency narrow pulse ultrasonic transducers. [0003] The frequency of the transducer can be achieved by adjusting the size of the piezoelectric chip to achieve a small aftershock signal. The common me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B1/06A61B8/00
Inventor 范晓荣姚烈瞿耀明董显林
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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