Photothermal Radiometry with Solid Cylindrical Samples
Photothermal Radiometry with Solid Cylindrical Samples
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DOI：
10.1063/1.1779973
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发表时间：
2004-09
影响因子：
3.2
通讯作者：
Chinhua Wang;A. Mandelis;Yue Liu
中科院分区：
文献类型：
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作者：
Chinhua Wang;A. Mandelis;Yue Liu
我们通过激光-红外光热辐射测量（PTR）将光热诊断的应用扩展到具有弯曲表面的样品。具体而言，我们提出了固体圆柱形样品（表面）的理论和实验PTR研究。基于绿色函数方法，得到了周期调制均匀光束激励下圆柱表面的热波场分布。具有圆柱对称性的激光束均匀地、部分地或全部地照射在圆柱形表面上，该圆柱形表面实际上沿轴向方向沿着无限长。讨论了热波场与材料的热扩散率、样品直径、入射光束的大小和角度测量的关系。实验结果与理论分析相吻合。
We extend the applications of the photothermal diagnostics by means of laser-infrared photothermal radiometry (PTR) to samples with curved surfaces. Specifically, we present both the theoretical and experimental PTR studies on solid cylindrical samples (surfaces). Based on the Green function method, the thermal-wave field distribution of a cylindrical surface that is under the excitation of a periodically modulated uniform beam is obtained. The laser beam, which is of a cylindrical symmetry, impinges uniformly, partially or fully, on the cylindrical surface, which is practically infinitely long along the axial direction. The characteristics of the thermal-wave field with respect to the thermal diffusivity of the material, the diameter of the sample, the size of the incident beam, and the measurement of the angle are discussed. Experimental results are in good agreement with the theory.