一项使用声波发射传感器进行实验评估,以有效检测钢板表面损坏的情况
Nikolaos Angelopoulos1, Vassilios Kappatos1
1Hellenic Institute of Transport (HIT), Centre for Research and Technology Hellas (CERTH), 57001 Thessaloniki, Greece.
Sensors (Basel, Switzerland)
|October 16, 2024
概括
声辐射 (AE) 测试有效检测结构损伤,如腐蚀和表面磨损. 过AE信号可以在杂的工业环境中提高检测准确度.
科学领域:
- 材料科学 材料科学 材料科学
- 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.
背景情况:
- 金属结构在运行过程中因腐蚀和表面磨损而面临退化.
- 早期检测表面缺陷对于防止应力度,裂开始和故障至关重要.
- 声波发射 (AE) 是一种监测材料损伤演变的技术.
研究的目的:
- 通过实验评估AE测试在监测腐蚀和表面磨损缺陷形成方面的有效性.
- 评估不同类型降解产生的AE信号的特征.
- 探索在具有挑战性的环境中改进基于AE的检测方法.
主要方法:
- AE传感器被安装在钢质测试板上.
- 在板上人工诱导腐蚀和表面磨损.
- 在降解过程中产生的AE信号被记录和分析.
- 信号特征 (振幅,能量,计数,持续时间) 与损伤类型相关.
主要成果:
- 与腐蚀相关的AE信号显示振幅,计数和能量低.
- 与表面磨损相关的AE信号显示出高幅度,能量,数量和长时间.
- AE传感器成功检测到腐蚀和表面退化事件.
- 确定了过方法,以增强在噪音条件下的AE检测.
结论:
- AE测试是检测金属结构中腐蚀和表面磨损的可行方法.
- 清晰的AE信号标志区分腐蚀和磨损.
- 实施过技术对于工业环境中基于AE的可靠结构健康监测至关重要.
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