Flexible ultrasonic phased array transducer and manufacturing method

An ultrasonic phase control and transducer technology, which is applied in the direction of the fluid using vibration, can solve the problem that the medical probe cannot be directly applied.

Active Publication Date: 2013-06-19
广州多浦乐电子科技股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, it is mainly used in ultrasonic therapy and medical imaging. Due to the differences between industrial non-destructive testing objects and the human body (such as acoustic impedance, surface appearance, etc.), medical probes cannot be directly used in the field of industrial non-destructive testing.

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  • Flexible ultrasonic phased array transducer and manufacturing method
  • Flexible ultrasonic phased array transducer and manufacturing method
  • Flexible ultrasonic phased array transducer and manufacturing method

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0028] This embodiment provides a flexible ultrasonic phased array transducer, see figure 1 , is a transducer structure, including a flexible piezoelectric ceramic composite wafer, a damping back material, a matching layer, a flexible circuit board, a coaxial cable and a probe interface; the matching layer, a flexible piezoelectric ceramic composite wafer and a damping back The materials are sequentially bonded together to form an acoustic laminate; the flexible circuit board is connected to the flexible piezoelectric ceramic composite material chip, and a multi-core coaxial cable is drawn from the flexible circuit board to the probe interface.

[0029] The flexible piezoelectric ceramic composite material is a piezoelectric ceramic body wi...

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Abstract

The invention discloses a flexible ultrasonic phased array transducer which comprises a flexible piezoelectric ceramic composite material chip, a damping back material, a matching layer, a flexible circuit board, a coaxial cable and a probe interface. The matching layer, the flexible piezoelectric ceramic composite material chip and the damping back material are adhered together in sequence to form an acoustic laminating layer. The flexible circuit board is connected with the flexible piezoelectric ceramic composite material chip, and the multi-core coaxial cable is led out from the flexible circuit board to the probe interface. When the center frequency Fc of the ultrasonic transducer equals to 7.85 MH, the bandwidth Bw can reach 87.78 %, pulse echo sensitivity Sr equals to minus 36.54 decibels, and crosstalk of adjacent array elements is minus 34 decibels. The flexible ultrasonic phased array transducer can be applied to industrial non-destructive testing.

Description

technical field [0001] The invention relates to a piezoelectric ultrasonic transducer, in particular to a flexible ultrasonic phased array transducer and a manufacturing method. Background technique [0002] At present, the array transducers for ultrasonic phased array imaging detection are generally rigid, which has the advantage of being easy to manufacture and position. But for objects with irregular surfaces, rigid probes can only be matched by acoustic wedges. Acoustic wedges can be divided into flexible acoustic wedges (usually with liquid water) and rigid acoustic wedges. Rigid wedges are characterized by immutable surface shapes, which are suitable for batch detection of objects with regular surface physical shapes, but for objects with complex surface shapes, such as blades with continuously changing surface curvatures, many wedges are required to match different detection areas. It will greatly increase the detection cost, and it cannot be solved at all for the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
Inventor 蔡庆生龙绍军纪轩荣
Owner 广州多浦乐电子科技股份有限公司
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