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盲区缺陷成像使用多路径边缘反射的Lamb波.

Nan Zhang1, Caibin Xu1, Liang Zeng2

  • 1College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

Ultrasonics
|September 24, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的Lamb波成像技术,使用多路径边缘反射来检测以前看不见的盲区中的裂纹状缺陷. 该方法准确地通过厚度裂成像,克服了传统算法的局限性.

关键词:
盲区是一个盲区.损害局部化损害的局部化羊羔波浪成像技术的使用.多路径反射反射是多路径反射.结构性健康监测 结构性健康监测

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科学领域:

  • 结构健康监测 结构健康监测
  • 非破坏性测试是指非破坏性测试.
  • 超声波波传播的超声波传播

背景情况:

  • 传统的延迟和总和算法很难在盲区中检测缺陷.
  • 羔羊波提供了检测结构损坏的潜力.
  • 边缘反射通常被忽视或难以用传统方法解释.

研究的目的:

  • 开发一种先进的基于Lamb波的缺陷成像方法.
  • 为了在盲区中检测类似裂的缺陷.
  • 提高非破坏性测试的准确性和可靠性.

主要方法:

  • 使用Lamb波的多路径边缘反射.
  • 通过镜像点引入虚拟发射器和接收器.
  • 建立基于追踪波包路径的损害指数.
  • 采用乘法策略来融合多顺序波束图像并减少文物.

主要成果:

  • 在盲区中成功检测到通过厚度的裂.
  • 通过数值和实验验证的有效性和可行性.
  • 在裂定位中达到1.12%的最小相对误差.

结论:

  • 拟议的Lamb波成像方法有效地检测盲区中的缺陷.
  • 多路径边缘反射显著提高了缺陷检测能力.
  • 该技术为结构健康监测提供了有前途的进步.