一种新的超声波方法,用于通过网络分析仪测量微小的正弦位移
Yuya Komatsu1, Shohei Mori1, Mototaka Arakawa1,2
1Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan.
The Review of scientific instruments
|February 12, 2024
概括
我们开发了一种新的方法,使用网络分析仪准确测量微小物体的位移. 这种技术精确地估计了微层次的正弦振动的粘弹性参数.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 工程 工程师 工程师 工程师
背景情况:
- 估计粘弹性参数需要精确测量物体的位移.
- 传统的方法很难准确地测量微米级的超声波力引起的小形移位.
研究的目的:
- 开发一种稳定,准确的方法来测量微米级的正弦位移.
- 为了使可靠的估计粘弹性参数使用超声波激发.
主要方法:
- 提出了一种使用网络分析仪测量反射超声波S参数的新方法.
- 理论上制定了S参数,反里叶变换和位移幅度之间的关系.
- 在水箱实验中应用该方法来测量物体上的侧面位移.
主要成果:
- 成功测量了微米 (10-300 Hz) 级的侧面位移.
- 获得的结果与激光位移计的参考测量结果有很好的一致性.
- 证明了网络分析仪方法用于准确的微位移测量的能力.
结论:
- 拟议的网络分析仪方法可以准确地测量微小的正弦位移.
- 这种技术克服了先前方法在稳定测量小幅度方面的局限性.
- 通过微位移分析,能够精确地描述材料粘弹性质.
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