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    常俊杰. 利用超声波传播特性对Al2O3涂层进行评价[J]. 机械工程材料, 2007, 31(2): 62-64.
    引用本文: 常俊杰. 利用超声波传播特性对Al2O3涂层进行评价[J]. 机械工程材料, 2007, 31(2): 62-64.
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    CHANG Jun-jie. Evaluation of the Al2O3 Coating by Ultrasonic Wave Propagation Character[J]. Materials and Mechanical Engineering, 2007, 31(2): 62-64.
    Citation: CHANG Jun-jie. Evaluation of the Al2O3 Coating by Ultrasonic Wave Propagation Character[J]. Materials and Mechanical Engineering, 2007, 31(2): 62-64.
    shu

    利用超声波传播特性对Al2O3涂层进行评价

    Evaluation of the Al2O3 Coating by Ultrasonic Wave Propagation Character

      摘要
    • 摘要: 利用超声波在涂层材料中的传播特性,建立了适于对等离子Al2O3涂层材料进行评价的超声检测系统,并对Al2O3涂层进行了评价.结果表明:该方法与质量差法计算的结果一致,可为涂层材料进行非破坏性能评定.

       

      Abstract: A method was proposed to extend the limit of the traditional bulk ultrasonic pulses for the evaluation of material properties of a coating.The extension was accomplished by introducing the concept of the group delay spectrum.The acoustic impedance and the density for the coating can be derived easily by a group delay analysis.Then the method was applied to the analysis of Al2O3 coating.

       

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