CHARACTERIZATION OF FLAWS IN COMPOSITES IDENTIFIED BY THERMOGRAPHY
    1.
    发明申请
    CHARACTERIZATION OF FLAWS IN COMPOSITES IDENTIFIED BY THERMOGRAPHY 有权
    通过热分析鉴定的复合材料中的花的特征

    公开(公告)号:US20090245321A1

    公开(公告)日:2009-10-01

    申请号:US12059172

    申请日:2008-03-31

    IPC分类号: G01N25/72

    CPC分类号: G01N25/72

    摘要: A method for identifying types of flaws in a composite object includes: a) rapidly heating the surface of the object; b) recording pixel intensities in a sequence of IR images; c) determining temperature-versus-time data for each of the pixels from the IR images; and d) determining what type of flaw if any corresponds to each of the pixels using the temperature-versus-time data determined in step (c). A contrast curve derived from the temperature-versus-time data may be used in determining what type of flaws if any corresponds to each of the pixels. The contrast curve may be determined by subtracting a synthetic reference curve from a temperature time curve from the temperature-versus-time data. The types of flaws may be determined from size and/or shapes of peaks in the contrast curves. Some flaws are delaminations, layers of porosity, and uniformly distributed porosity.

    摘要翻译: 用于识别复合物体中的缺陷类型的方法包括:a)快速加热物体的表面; b)记录IR图像序列中的像素强度; c)从IR图像确定每个像素的温度 - 时间数据; 以及d)使用步骤(c)中确定的温度 - 时间数据来确定任何类型的缺陷是否对应于每个像素。 从温度 - 时间数据导出的对比曲线可以用于确定如果任何对应于每个像素的什么类型的缺陷。 对比度曲线可以通过从温度 - 时间数据的温度时间曲线中减去合成参考曲线来确定。 缺陷的类型可以根据对比度曲线中的峰的大小和/或形状来确定。 一些缺陷是分层,多孔层,均匀分布的孔隙度。

    Characterization of flaws in composites identified by thermography
    2.
    发明授权
    Characterization of flaws in composites identified by thermography 有权
    通过热成像鉴定的复合材料中的缺陷的表征

    公开(公告)号:US08393784B2

    公开(公告)日:2013-03-12

    申请号:US12059172

    申请日:2008-03-31

    IPC分类号: G01N25/72 G01N25/58 G01J5/00

    CPC分类号: G01N25/72

    摘要: A method for identifying types of flaws in a composite object includes: a) rapidly heating the surface of the object; b) recording pixel intensities in a sequence of IR images; c) determining temperature-versus-time data for each of the pixels from the IR images; and d) determining what type of flaw if any corresponds to each of the pixels using the temperature-versus-time data determined in step (c). A contrast curve derived from the temperature-versus-time data may be used in determining what type of flaws if any corresponds to each of the pixels. The contrast curve may be determined by subtracting a synthetic reference curve from a temperature time curve from the temperature-versus-time data. The types of flaws may be determined from size and/or shapes of peaks in the contrast curves. Some flaws are delaminations, layers of porosity, and uniformly distributed porosity.

    摘要翻译: 用于识别复合物体中的缺陷类型的方法包括:a)快速加热物体的表面; b)记录IR图像序列中的像素强度; c)从IR图像确定每个像素的温度 - 时间数据; 以及d)使用步骤(c)中确定的温度 - 时间数据来确定任何类型的缺陷是否对应于每个像素。 从温度 - 时间数据导出的对比曲线可以用于确定如果任何对应于每个像素的什么类型的缺陷。 对比度曲线可以通过从温度 - 时间数据的温度时间曲线中减去合成参考曲线来确定。 缺陷的类型可以根据对比度曲线中的峰的大小和/或形状来确定。 一些缺陷是分层,多孔层,均匀分布的孔隙度。

    Method and apparatus for thermographic nondestructive evaluation of an object
    6.
    发明授权
    Method and apparatus for thermographic nondestructive evaluation of an object 有权
    一种物体的热成像非破坏性评估方法和装置

    公开(公告)号:US08055054B2

    公开(公告)日:2011-11-08

    申请号:US11639724

    申请日:2006-12-15

    CPC分类号: G01B11/0608 G01N25/72

    摘要: A non-destructive evaluation system and method is provided for detecting flaws in an object. The system includes a lamp for impinging the object with optical pulses and a focal plane array camera configured to capture the images corresponding to evolution of heat due to an impact of the optical pulses in the object. The system also includes an image acquisition system for capturing data corresponding to the images from the focal plane array camera. Both transmission mode imaging and reflection mode imaging techniques are used in an exemplary embodiment. A time of flight analysis system is also provided for analyzing the data from both transmission mode imaging technique and reflection mode imaging technique. The data from transmission mode imaging is used to determine thickness values at different points in the data and for determining location of flaws using the thickness values. The data from reflection mode imaging is used for determining depth of these flaws.

    摘要翻译: 提供了用于检测物体中的缺陷的非破坏性评估系统和方法。 该系统包括用于以光脉冲冲击物体的灯和焦平面阵列照相机,该焦平面阵列相机被配置为捕获由于物体中的光脉冲的影响而对应于热演变的图像。 该系统还包括用于从焦平面阵列相机拍摄对应于图像的数据的图像采集系统。 在示例性实施例中使用传输模式成像和反射模式成像技术。 还提供了一个飞行时间分析系统,用于分析来自传输模式成像技术和反射模式成像技术的数据。 来自传输模式成像的数据用于确定数据中不同点的厚度值,并使用厚度值确定缺陷的位置。 来自反射模式成像的数据用于确定这些缺陷的深度。

    Method and apparatus for thermographic nondestructive evaluation of an object
    8.
    发明申请
    Method and apparatus for thermographic nondestructive evaluation of an object 有权
    一种物体的热成像非破坏性评估方法和装置

    公开(公告)号:US20080144049A1

    公开(公告)日:2008-06-19

    申请号:US11639724

    申请日:2006-12-15

    IPC分类号: G01B11/28 F21V7/00

    CPC分类号: G01B11/0608 G01N25/72

    摘要: A non-destructive evaluation system and method is provided for detecting flaws in an object. The system includes a lamp for impinging the object with optical pulses and a focal plane array camera configured to capture the images corresponding to evolution of heat due to an impact of the optical pulses in the object. The system also includes an image acquisition system for capturing data corresponding to the images from the focal plane array camera. Both transmission mode imaging and reflection mode imaging techniques are used in an exemplary embodiment. A time of flight analysis system is also provided for analyzing the data from both transmission mode imaging technique and reflection mode imaging technique. The data from transmission mode imaging is used to determine thickness values at different points in the data and for determining location of flaws using the thickness values. The data from reflection mode imaging is used for determining depth of these flaws.

    摘要翻译: 提供了用于检测物体中的缺陷的非破坏性评估系统和方法。 该系统包括用于以光脉冲冲击物体的灯和焦平面阵列照相机,该焦平面阵列照相机被配置为捕获由于物体中的光脉冲的影响而对应于热演变的图像。 该系统还包括用于从焦平面阵列相机拍摄对应于图像的数据的图像采集系统。 在示例性实施例中使用传输模式成像和反射模式成像技术。 还提供了一个飞行时间分析系统,用于分析来自传输模式成像技术和反射模式成像技术的数据。 来自传输模式成像的数据用于确定数据中不同点的厚度值,并使用厚度值确定缺陷的位置。 来自反射模式成像的数据用于确定这些缺陷的深度。