只有线圈的高频羔羊波浪在板中的产生
Yini Song1, Yihua Kang1, Kai Wang1
1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Sensors (Basel, Switzerland)
|November 27, 2024
概括
一种全新的"只用线圈"的超声波检测方法消除了永久磁铁,以在板中产生更简单,高频的Lamb波. 这种只有线圈的磁强度传感器提供了准确的测量和灵活的超声波设备的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 工程 工程师 工程师 工程师
背景情况:
- 传统的强磁超声波传感器通常依赖于永久磁铁,增加复杂性和尺寸.
- 开发更简单,更有效的超声波检测方法对于先进的材料表征和非破坏性测试至关重要.
研究的目的:
- 引入一种新的,仅用线圈的强磁超声波检测方法,简化传感器设计.
- 为了证明高频Lamb波产生和准确的超声波检测在没有永久磁铁的板中.
主要方法:
- 使用了一个精简的系统,包括单个绕线圈,激发源和板.
- 使用复合激发 (直流和交流组件) 来实现偏向磁场和超声波激发.
- 实验验证包括在0.2毫米的板中激发S0模式的兰姆波,使用双层曲线.
主要成果:
- 这种新的方法成功地在板中产生了高频Lamb波,从而降低了设备的复杂性.
- 一个S0模式的Lamb波在2.625MHz时被有效地激发.
- 实验测量的波速 (4.9946 m/s) 与理论值的微小偏差为0.4985%,证实了方法的准确性.
结论:
- 只有线圈的磁强制性超声波检测方法为传统设计提供了更简单,更有效的替代方案.
- 这种方法使得精确的,高频的Lamb波产生用于超声波检测在薄板.
- 这项研究为开发灵活的基于MEMS的强磁超声波传感器和微型补丁传感器奠定了基础.
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