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Development of ultrasonic waveguide techniques for under-sodium viewing

机译：用于钠下观察的超声波导技术的发展

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摘要

An ultrasonic imaging system based on waveguide techniques was developed to provide in-service inspection of reactor core of a sodium-cooled fast reactor (SFR) and potential applications in other hostile environments. By using the ultrasonic waveguide techniques, we overcome the major technical challenge in developing an under-sodium viewing (USV) system that can withstand the high-temperature and corrosive environment. The chosen design of the prototype waveguide (WG) is a hybrid of bundle and spiraled-sheet WG. The prototypes show high detection sensitivity with minimal background noise by effectively reducing spurious echoes and mode conversions. Tests on prototype waveguide transducers were conducted in liquid sodium up to 340 ℃ (650 °F). C-scan images of the targets were successfully developed from both time-of-flight and amplitude variations of the reflected echoes. The ultrasonic waveguide imaging system demonstrates a capability of detecting defects with 1 mm width and 0.5 mm depth under molten sodium.
机译：开发了一种基于波导技术的超声成像系统，可对钠冷快堆（SFR）的反应堆堆芯进行在役检查，并在其他恶劣环境中进行潜在应用。通过使用超声波波导技术，我们克服了开发可承受高温和腐蚀性环境的钠下观察（USV）系统的主要技术挑战。原型波导（WG）的选定设计是束和螺旋板WG的混合。原型通过有效地减少寄生回波和模式转换，显示了高检测灵敏度和最小的背景噪声。在高达340℃（650°F）的液态钠中进行了原型波导换能器的测试。从飞行时间和反射回波的振幅变化中成功开发了目标的C扫描图像。超声波导成像系统演示了在熔融钠下检测宽度为1毫米，深度为0.5毫米的缺陷的能力。

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  • 来源
    《NDT & E international》 |2012年第2012期|p.71-76|共6页
  • 作者

    Ke Wang; Hual-Te Chien; Thomas W. Elmer; William P. Lawrence; David M. Engel; Shuh-Haw Sheen;

  • 作者单位

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

    Sensors and Instrumentation Section, Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ultrasonic; waveguide; in-service inspection; sodium-cooled fast reactor; under-sodium viewing;

    机译：超声波波导;在役检查;钠冷快堆钠下观看;

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