使用非线性超声波监测正方形钢甲板的疲劳损伤
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Updated: Jun 22, 2025

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Ultrasonic Fatigue Testing in the Tension-Compression Mode
Published on: March 7, 2018
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Jiahe Liu1, Fangtong Zheng2, Wei Shen3
1School of Civil Engineering, Dalian University of Technology, Dalian 116024, China.
Materials (Basel, Switzerland)
|June 27, 2024
概括
对于桥梁安全而言,早期检测正极钢甲板 (OSD) 的疲劳损伤至关重要. 一种新方法使用非线性Lamb波来创建损伤指数 (DI) 以有效监测疲劳寿命.
科学领域:
- 结构健康监测 结构健康监测
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
背景情况:
- 正方形钢甲板 (OSD) 是重要的桥梁组件,但容易受到循环车辆负载的疲劳损伤.
- 早期发现疲劳损伤对于确保桥梁安全和结构完整至关重要.
- 羔羊波提供长的传播距离和最小的衰减,使它们适合监测板状结构.
研究的目的:
- 开发一种有效的方法,用于早期结构健康监测OSD的疲劳损伤.
- 建立基于非线性Lamb波参数的损伤指数 (DI),以评估疲劳寿命.
- 为了研究肋对OSD的DI的影响.
主要方法:
- 在OSD表面发射高能超声波以产生非线性Lamb波.
- 从捕获的波中计算非线性参数.
- 将非线性参数与疲劳损伤相关联,以得出损伤指数 (DI).
- 分析肋骨接对DI的影响.
主要成果:
- 非线性参数显示出明显的初始增加,随后随着疲劳损伤的增加而下降.
- 基于非线性参数的拟议DI,可以准确地配合高斯曲线 (R平方≈1).
- 肋 welds 扩大非线性参数值,增加疲劳损伤,但不会改变整体趋势.
结论:
- 使用非线性Lamb波的拟议方法为监测OSD早期疲劳损伤提供了一个高度有效的方法.
- 开发的损坏指数 (DI) 提供了一个可靠的工具来评估OSD的疲劳寿命.
- 这些发现突显了非线性超声波技术在先进的桥梁结构健康监测方面的潜力.
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