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CN102778511A 一种平板无损检测的超声导波换能器 无效 - 驳回

一种平板无损检测的超声导波换能器
摘要：
本发明是一种平板无损检测的超声导波换能器，涉及超声波的测量和管道系统技术领域。它由压电晶片(4)、具有特殊几何参数的楔块(3)、前衬(1)、外壳组成；在楔块(3)顶角的一侧面安装压电晶片(4)，顶角的另侧面粘附有前衬(1)，且在靠近顶角处均匀排布有锯齿(2)，楔块(3)外罩有外壳；其特征是楔块(3)为铜材质，顶角为直角，其中一底角的角度为37～50°，另一底角为其余角；在楔块(3)靠近顶角处均匀排布有锯齿(2)。本发明结构简单、经济适用、检测距离远、分辨率高。
摘要（英）：

Relating to the technical field of ultrasonic measurement and pipeline systems, the invention provides an ultrasonic guided wave transducer for panel nondestructive detection. The ultrasonic guided wave transducer is composed of: a piezoelectric wafer (4), a wedge block (3) with special geometrical parameters, a front liner (1), and a housing. The piezoelectric wafer (4) is arranged on one side of a wedge block (3) vertex angle, the other side of which is adhered with the front liner (1). Sawteeth (2) are evenly arranged near the vertex angle. And the housing covers the wedge block (3). The invention is characterized in that the wedge block (3) is made of a copper material, the vertex angle is a right angle, one base angle is 37-50 degrees, and the other base angle is its complement. The sawtooth (2) are evenly arranged on the wedge block (3) near the vertex angle. The invention has the advantages of simple structure, economy and applicability, long detection distance, and high resolution.

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