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兵工学报 ›› 1991, Vol. 12 ›› Issue (2): 86-92.

• 实验技术与分析 • 上一篇    下一篇

一种新的毫米波CT无损检测系统的理论与实验研究

赵川东   

  1. 北京理工大学
  • 收稿日期:1989-11-01 修回日期:1990-09-01 上线日期:2014-12-25
  • 通讯作者: 赵川东

Experimental and Theoretical Study of a New Millimeter Computerised Tomography Non—Destructive Testing System

Zhao Chuandong   

  1. Beijing Institute of Technology
  • Received:1989-11-01 Revised:1990-09-01 Online:2014-12-25
  • Contact: Zhao Chuandong

摘要: 本文给出应用平面波CT成象原理研制的一种新的毫米波无损检测系统的理论与实验结果。用于对非金属制品的二维CT检测。毫米波测试装置采用由抛物面反射体。滴置馈源、零桥环路连成一体的结构,可产生窄波束的平面波照射场。文中给出了在30G Hz频率下的实验结果及重构出的被测件断层图象。

关键词: 平面波CT, 非金属, 无损检测

Abstract: A new millimeter wave CT system is set up and studied, applying the plane wave diffraction CT principle to perform non-destruc- tiye tests for dielectric materials. In order to generate the required plane wave front and comparatively narrow beam of illumination, an offset para?bolic antenna in conjunction with a null bridge system has been designed and setup. Some experimental results of reconstructed images for objects under test are given under frequency of 30GHz.

Key words: plane wave CT, non-metal, non-destructive testing