EMBEDDED FIBER OPTICAL MACH-ZEHNDER INTERFEROMETER FOR THE DETECTION OF DELAMINATION IN COMPOSITES
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摘要: 将光纤Mach-Zehnder干涉仪的传感臂埋入到复合材料梁的中性层来检测梁的分层。不论梁是连续支撑还是简单支撑,均取得了很好的实验结果。通过用榔头连续下压梁,由光纤干涉仪可以得到一条输出曲线,从这条曲线就可以准确判断梁内部是否存在分层,以及分层的位置。
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关键词:
- 复合材料 /
- 分层 /
- 光纤传感器 /
- Mach-Zehnder干涉仪
Abstract: The sensing arm of a fiber optical Mach-Zehnder Interferometer is embedded into the middle of composite beams to detect the delamination in the beams. Good results are obtained showing the delaminations can be detected easily whether the beams are simply supported or continuously supported. By pressing the beam continuously using a hammer, the output curve can be obtained from the fiber optical interferometer. One can judge if there exists delamination, and where the delamination is from the curve exactly.-
Key words:
- composite /
- delamination /
- fiber optical sensor /
- Mach-Zehnder interferometer
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