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关于光声非线性频率混合技术的实验研究,使用分离的基本温度

Chen-Yin Ni¹, Ling Yuan¹, Yi-Fei Zhang¹

¹School of Physics, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Xuanwu District, Nanjing, 210094, PR China.

|April 29, 2024

概括

这项研究通过独立控制温度来增强基于非接触激光的裂纹检测. 改进的光声非线性频率混合技术捕获更丰富的信号用于微裂纹评估.

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:

传统的频率混合使用接触式传感器.
激光诱导的声学非线性频率混合提供了一个非接触的替代方案.
探头激光温度可以使裂状态和非线性声学信号复杂化.

研究的目的:

为了增强光声非线性频率混合设置,以改善微裂纹检测.
为了隔离和控制"基本温度"对裂宽度的影响.
为了优化激光参数,增强裂检测灵敏度.

主要方法:

将一个独立的加热激光束集成到光声设置中.
减少探头激光功率以最大限度地减少热效应.
研究了灵敏度的最佳激光源参数.

主要成果:

修改后的系统成功地隔离了"基本温度"效应.
减少探头激光功率减轻了热干扰.
优化的参数和改进的系统捕获了具有增强功能的非线性声学信号.

结论:

增强的非接触光声非线性频率混合技术为微裂纹检测和评估提供了更敏感的方法.
独立的温度控制可以提高信号的多样性和可靠性.
进一步支持在材料分析中应用非接触式光声学方法.

关键词:

激光超声波是一种超声波.微小的裂可能是微小的裂.非线性频率混合不线性频率混合参数相互作用的参数相互作用

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