压缩负载对TeO2晶体声波发射和光极化特征的影响
Alexander Machikhin1,2, Dmitry Chernov3, Demid Khokhlov1,2
1National Research University "Moscow Power Engineering Institute", 14-1 Krasnokazarmennaya, 111250 Moscow, Russia.
Materials (Basel, Switzerland)
|July 27, 2024
概括
这项研究引入了声辐射 (AE) 传感和交叉偏振成像,以检测二氧化晶体中的缺陷. 这种方法可以在操作过程中实时,非破坏性地监测晶体结构.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 固态物理 固态物理
背景情况:
- 对晶体材料的实时监测对于光电子和科学仪器来说至关重要.
- 早期缺陷检测对于确保基于晶体的设备的可靠性至关重要.
- 二氧化 (TeO2) 晶体在声光学中被广泛使用,需要强大的监测技术.
研究的目的:
- 开发一种快速表征的方法,使用结合传感技术的晶体结构.
- 建立用于识别晶体中不可逆转的损伤和裂形成的定量标准.
- 为了在操作条件下实现光学透明晶体的非破坏性实时监控.
主要方法:
- 使用了声辐射 (AE) 传感和交叉极化成像的组合.
- 在单轴压缩负载下对二氧化 (TeO2) 水晶进行实验.
- 同时获得AE信号和四个极化光学图像以进行全面分析.
主要成果:
- 通过分析AE数据和极化图像,建立了对不可逆转损害的启动和裂纹状缺陷的定量标准.
- 确定了特定的极化图像模式和AE脉冲持续时间的变化,与损伤过程相关.
- 证明了结合方法在表征晶体结构变化的有效性.
结论:
- 拟议的方法允许快速,非破坏性地表征晶体结构.
- 这项研究为光学透明晶体的实时结构监测开辟了新的可能性.
- 在压力下,AE传感和交叉极化成像为晶体完整性提供了宝贵的见解.
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