基于磁致伸缩导波的桥梁缆索缺陷检测技术研究OA
Research on bridge cable defect detection technology based on magnetostrictive guided waves
磁致伸缩导波是一种长距离缆索缺陷的检测方法,可以有效检测出腐蚀和断丝等所产生的缺陷.采用有限元分析方法,建立磁致伸缩导波损伤识别模型研究缆索中各种参量对损伤区位移场的影响规律,并设计相应的实验装置.研究表明,当Hanning窗口(20 kHz)的电流激励时,可以清楚地辨识出缺陷部位的回波波形,其周围的位移场强度随着缺陷所占比例的增加而加强,在同一截面所占比重相等的情况下,缺陷宽度越大,其周围的位移场越强.在横截面内外能量分布方面,距离缆索中心越近,位移场强度达到最大值,导波在缆索中的传播距离至少可达18米.研究成果验证了该技术在缆索缺陷检测中的有效性,提供了桥梁维护和换索等决策制定的依据.
Magnetostrictive guided waves can detect long-distance cable defects like corrosion and broken wires.A magnetostrictive guided-wave-based damage identification model was established via finite element analysis to study the effect of various cable parame-ters on the displacement field in the damage zone,and a relevant experimental device was designed.Research shows that with Hanning window(20 kHz)current excitation,defect-location echo waveforms can be clearly identified.The displacement field near the damage strengthens as the damage proportion increases.At the same cross-section proportion,the greater the defect width,the stronger the sur-rounding displacement field.In terms of transverse energy distribution,the displacement field peaks near the cable center and guided waves can propagate at least 18 meters in the cable.These findings confirm the technology's effectiveness for cable-defect detection and offer a basis for bridge-maintenance and cable-replacement decisions.
隋涛;寿先庆;张双楠
沈阳理工大学自动化与电气工程学院,沈阳 110159沈阳理工大学自动化与电气工程学院,沈阳 110159中国科学院金属研究所,沈阳 110017
交通工程
桥梁缆索磁致伸缩导波缺陷检测有限元仿真
Bridge cablesMagnetostrictive guided wavesDefect detectionFinite element simulation
《通信与信息技术》 2026 (2)
16-20,5
辽宁省教育厅高等学校基本科研项目(项目编号:JYTMS20230199)
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