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首页> 外文期刊>Journal of Materials Engineering and Performance >Location and Geometry of defects in composite laminates from infrared images
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Location and Geometry of defects in composite laminates from infrared images

机译：红外图像检测复合材料层压板中缺陷的位置和几何形状

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An infrared scanning system is employed to analyze defective glass-epoxy laminates. Several specimens, manufactured with insertion of pieces of different materials to simulate either delaminations or inclusions are considered, and tests areperformed for varying material, shape, depth, and size of inserts. Each specimen is heated by quartz lamps and viewed by an infrared camera, and thermograms are acquired in time sequence in the transient heating phase. Thermograms are quantitativelyanalyzed in terms of time temperature profiles along lines through the center of defects. The center of a defect is individuated with high certainty; the size instead is measured (from the temperature profile) much well as much as the defect is positioned at small depth and is large. For each test condition, the measured dimension is related to the real one. This ratio, plotted against time, shows an asymptotic distribution and allows for a simple evaluation of defective laminates.
机译：红外扫描系统用于分析有缺陷的玻璃环氧层压板。考虑了几个通过插入不同材料来模拟分层或夹杂物而制成的标本，并对不同材料，形状，深度和插入物尺寸进行了测试。每个样品都由石英灯加热并由红外热像仪观察，并在瞬态加热阶段按时间顺序采集温度记录图。根据沿穿过缺陷中心的线的时间温度分布图，定量分析了热分析图。高度确定缺陷的中心;取而代之的是，尺寸的测量（根据温度曲线）与缺陷的深度和深度都一样好。对于每种测试条件，测得的尺寸均与实际尺寸相关。相对于时间绘制的该比率显示出渐近分布，并允许简单评估有缺陷的层压板。

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