使用超声波导向波的接关节的评估
Hussain Altammar1, Mohammad Faseeulla Khan1
1Department of Mechanical Engineering, College of Engineering, King Faisal University, Al Ahsa 31982, Saudi Arabia.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
这项研究使用超声波引导波和Lamb波模式转换来检查钢接膝关节是否存在腐蚀和解结等缺陷,而没有基线数据. 模式转换波具有独特的灵敏度,可以识别损坏.
科学领域:
- 材料科学与工程 材料科学与工程
- 非破坏性测试 不破坏性测试
- 结构健康监测 结构健康监测
背景情况:
- 接的膝关节在管道和船体等结构中至关重要.
- 这些接头的缺陷检测对于结构完整性至关重要.
- 当前的检查方法通常需要基线数据,这限制了它们的适用性.
研究的目的:
- 为了研究超声波导向波传播在钢接膝关节.
- 开发一种使用Lamb波模式转换的关节缺陷的无基线检查方法.
- 分析不同波形模式对腐蚀和解的敏感性.
主要方法:
- 有限元素方法 (FEM) 模拟有缺陷的单个膝关节.
- 使用 2D 快速里埃转换 (FFT) 来识别波形的波数频率分析.
- 测量传输模式的功率损失,以量化损坏的影响.
主要成果:
- 在原始关节中,A0事件显示的传输损失 (9.5dB) 比S0事件 (2.8dB) 高.
- 腐蚀使传输损失减少了28%以上,而拆解则增加了S0损失.
- 转换模式的S0 (MC-S0) 和转换模式的A0 (MC-A0) 波对腐蚀和解具有不同的敏感性.
结论:
- 羊羔波浪模式转换为检查接腿部关节提供了一个有前途的无基线方法.
- MC-S0,MC-A0和Lamb模式与缺陷的差异性相互作用使损坏识别成为可能.
- 这种方法提高了在关键工程结构中检测腐蚀和解的能力.
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