| 高阶纵向超声导波在钢绞线缺陷检测中的应用研究 |
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| 引用本文： | 刘增华,赵继辰,吴斌,何存富.高阶纵向超声导波在钢绞线缺陷检测中的应用研究[J].工程力学,2011(4):214-220. |
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| 作者姓名： | 刘增华 赵继辰 吴斌 何存富 |
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| 作者单位： | 北京工业大学机械工程及应用电子技术学院; |
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| 基金项目： | 国家自然科学基金项目(10602004,50975006); 北京市自然科学基金项目(2072003); 北京市科技新星计划项目(2008A015); 北京市优秀人才培养项目(20081B0501500173); 北京市教委项目(KM201010005003) |
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| 摘 要： | 为了实现对钢绞线的主动健康监测,采用安装在结构外表面上的磁致伸缩传感器激励和接收高阶纵向超声导波,优化各种参数以用于缺陷的识别和评估.实验选取经Hanning窗调制的正弦脉冲信号在7芯钢绞线中激励中心频率0.86MHz的高阶纵向超声导波L(0,2)模态,用于在两根钢绞线外围钢丝和中心钢丝中人工缺陷的检测.实验分析了L(...
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| 关 键 词： | 超声导波 高阶模态 钢绞线 缺陷 激励信号 |
APPLICATION STUDY ON DEFECT DETECTION IN STEEL STRANDS BY USING HIGH-ORDER ULTRASONIC LONGITUDINAL GUIDED WAVES |
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| LIU Zeng-hua,ZHAO Ji-chen,WU Bin,HE Cun-fu.APPLICATION STUDY ON DEFECT DETECTION IN STEEL STRANDS BY USING HIGH-ORDER ULTRASONIC LONGITUDINAL GUIDED WAVES[J].Engineering Mechanics,2011(4):214-220. |
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| Authors: | LIU Zeng-hua ZHAO Ji-chen WU Bin HE Cun-fu |
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| Affiliation: | LIU Zeng-hua,ZHAO Ji-chen,WU Bin,HE Cun-fu(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | In order to achieve active health monitoring of steel strands,magnetostrictive transducers fixed on the surface of the structures are applied for the excitation and the reception of high-order ultrasonic longitudinal guided wave modes and proper parameters are optimized for the identification and evaluation of the defects.The sinusoidal tone burst modulated by a Hanning window is used for an exciting high-order ultrasonic longitudinal guided wave mode L(0,2) at 0.86MHz in seven-wire steel strands to detect ... |
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| Keywords: | ultrasonic guided waves high-order mode steel strand defect excitation signal |
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