中国激光, 2008, 35 (s2): 324, 网络出版: 2009-01-05  

压电光声技术对材料热性能的研究

Thermal Properties of the Material Studied by the Photoacoustic Piezoelectric Technique
作者单位
电子科技大学光电信息学院, 四川 成都 610054
摘要
利用光声压电(PAPE)技术测量研究材料的热扩散率, 开展了对钇铝石榴石(YAG)新型复合材料热扩散率的测量研究。介绍了基于简化热弹模型理论的光声压电法, 对利用简化热弹模型建立的光声压电理论进行推导, 根据简化的热弹模型, 建立了运用光声压电法检测材料热扩散率的实验系统; 运用光声压电法, 在不同的测试条件下, 对参考样品热扩散率进行检测, 完成了对实验系统的校准; 对YAG等新型复合材料的热扩散率开展测量研究。研究结果显示, 光声压电法是可以用来准确测量金属材料的热扩散率。在适当的实验条件下, 光声压电技术可以有效地测量新型复合材料的等效热扩散率。
Abstract
The thermal diffusivity of the materials has been studied by the photoacoustic piezoelectric (PAPE) technique. The thermal diffusivity of yttrium aluminum garnet (YAG) composite material has been studied. The PAPE method based on a simplified thermoelastic theory was proposed. The PAPE theory based on a simplified thermoelastic theory has been analyzed. The experimental system has been set up according to the simplified thermoelastic model. The experimental system was calibrated by investigating the diffusivities of many referential materials. The effective thermal diffusivity of the YAG composite material was investigated by the PAPE technique. The results were shown that the PAPE technique can be used to measure the thermal diffusivity of metal materials accurately.The measurement of YAG’s thermal diffusivity was shown that the PAPE method can effectively measure the thermal diffusivity of new composite materials in the appropriate experimental conditions.

赵斌兴, 王亚非, 高椿明, 周鹰, 王占平. 压电光声技术对材料热性能的研究[J]. 中国激光, 2008, 35(s2): 324. Zhao Binxing, Wang Yafei, Gao Chunming, Zhou Ying, Wang Zhanping. Thermal Properties of the Material Studied by the Photoacoustic Piezoelectric Technique[J]. Chinese Journal of Lasers, 2008, 35(s2): 324.

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