脉冲回声传感系统在恶劣环境下进行超声波浸泡测试的独特特征
Gaofeng Sha1, Andrew R Bozek1, Bernhard R Tittmann1
1Department of Engineering Science and Mechanics, Penn State, University Park, PA 16802, USA.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
这项研究探讨了在恶劣环境中的超声波测试,优化脉冲回声浸泡测试用于船舶墙壁检查. 信号处理有效地隔离了目标回声,从而能够检测到表面异常.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
- 声学 声学 在声学方面
背景情况:
- 超声波测试对于在恶劣环境 (高温,辐射,化学物质) 中检查系统非常有价值.
- 现有的研究重点是对压电材料的恶劣环境影响,对其他传感器方面不那么重视.
- 脉冲回声沉浸测试在辨别声中的目标回声方面提出了独特的挑战.
研究的目的:
- 为了证明脉冲回声沉浸测试在恶劣环境中的独特特性.
- 为了研究电极厚度,联轴器,支材料和声学匹配层的影响.
- 评估信号处理方法,以改善目标回声检测.
主要方法:
- 利用有限元模拟和实验室实验.
- 采用化压电元件安装在船舶壁上.
- 研究波浪通过血管壁传播到具有目标的流体中.
主要成果:
- 识别了区分目标回声与容器壁反响的挑战,特别是在短流体旅行距离的情况下.
- 证明了一个简单的减法信号处理方法有效地减少了当声学匹配不足时的反响.
- 确认成功检测到足够的目标回声,以确定飞行时间和识别表面异常.
结论:
- 优化的脉冲回声沉浸测试参数和信号处理在具有挑战性的条件下提高了检查能力.
- 开发的方法允许可靠地检测目标和表面特征,即使有信号干扰.
- 这种方法在恶劣的工业环境中推进了非破坏性评估.
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