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Device for Detection of Defects in Steam Generator Tubes Using Acoustic Analysis

机译：声学分析检测蒸汽发生器管中缺陷的装置

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摘要

Current methods of investigating the integrity of steam generator tubes are time extensive and require invasive testing equipment. The industry standard is eddy current testing, which runs a probe through each generator tube inducing eddy currents to evaluate the state of the tube.1 This project's goal is developing a method to detect cracks in a steam generator tube(s) with minimal testing time. This project focuses on utilizing the known acoustic properties of the steam generator material2'3 to detect changes in the structure of the tube. Two different approaches were investigated. The first approach was the "impulse response method," which involved impacting the tube and comparing the resulting natural frequency to a baseline natural frequency from before the tube was damaged. Several issues were identified with this method, specifically damping and multiple causes for natural frequency shift.
机译：目前研究蒸汽发生器管完整性的方法耗时，并且需要侵入式测试设备。行业标准是涡流测试，该测试在每根发生器管道中运行一个探头，通过感应涡流来评估管道的状态。1该项目的目标是开发一种方法，以最少的测试时间检测蒸汽发生器管道中的裂纹。该项目着重于利用蒸汽发生器材料2'3的已知声学特性来检测管子结构的变化。研究了两种不同的方法。第一种方法是“脉冲响应方法”，该方法涉及冲击管子，并将产生的固有频率与管子损坏之前的基线固有频率进行比较。这种方法确定了几个问题，特别是阻尼和自然频移的多种原因。

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  • 来源
    《Transactions of the American nuclear society》 |2011年第2011期|p.81-82|共2页
  • 作者

    J. Beard; P. Howard; L. Mackie; S. Morris; T. Ramis; D. Rowekamp; M. Urffer;

  • 作者单位

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

    Department of Nuclear Engineering University of Tennessee, Knoxville 315 Pasqua Engineering Building Knoxville, Tennessee 37996-2300;

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