在板块结构中使用物理增强的TransUNet进行S0Lamb波散射
Linfeng Wang1, Hongyan Zhang1, Zhen Zhang1
1State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China.
Ultrasonics
|October 12, 2025
概括
这项研究引入了一种物理增强的TransUNet (PTUNet) 用于分析Lamb波散射在有缺陷的结构中. PTUNet准确地模拟波浪的传播和散射,为非破坏性测试和结构健康监测提供了一个有前途的工具.
科学领域:
- 声学和波浪的传播.
- 材料科学与工程 材料科学与工程
- 计算力学 计算力学 计算力学
背景情况:
- 羔羊波散射对于非破坏性测试 (NDT) 和结构健康监测 (SHM) 至关重要.
- 现有的分析和数值方法在处理复杂的缺陷和高频计算方面存在局限性.
- 计算成本是高频率传统数值方法的一个重要障碍.
研究的目的:
- 提出一种新的物理增强的TransUNet (PTUNet),用于模拟板结构中分散的Lamb波.
- 解决目前分析不规则缺陷和复杂波现象的方法的局限性.
- 为波场分析提供高效准确的计算工具.
主要方法:
- 开发了一个物理增强的TransUNet (PTUNet),集成了本地和全球建模能力.
- 纳入Kirchhoff-Love板理论作为使用有限差异方法的物理约束.
- 通过随机缺陷的数值模拟和实验测量验证了该方法.
主要成果:
- PTUNet准确地预测了Lamb波传播,模式转换和散射特征.
- 拟议的方法与有限元模拟和实验数据有合理的一致性.
- 在板中的不规则缺陷方面展示了有效的波场建模.
结论:
- PTUNet为准确的波场建模和缺陷表征提供了一个有前途的方法.
- 物理增强的深度学习模型克服了Lamb波分析中的计算挑战.
- 潜在的应用包括先进的声学散射问题和改进的NDT/SHM.
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