| 光弹性贴片载波法 |
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| 引用本文： | 陈玉琢,徐铸.光弹性贴片载波法[J].实验力学,1987,2(4). |
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| 作者姓名： | 陈玉琢 徐铸 |
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| 作者单位： | 南京工学院，南京工学院 |
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| 摘 要： | 本文提出了一种提高测量灵敏度的光弹性贴片法。通过高频条纹调制获取载波条纹图。使贴片的等差效应所反映的力学信息规范化。运用计算机图象处理技术,对载波图自动采集、处理和解调,以获得全场条纹级数。编制了专用软件并以实例说明实验过程。
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| 关 键 词： | 光弹性贴片 载波 调制 解调 |
Carried Photoelastic Coating |
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| Chen Yuzhuo Xu Zhu.Carried Photoelastic Coating[J].Journal of Experimental Mechanics,1987,2(4). |
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| Authors: | Chen Yuzhuo Xu Zhu |
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| Institution: | Nanjing Institute of Technology |
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| Abstract: | The present paper proposes a new method for inpaouing sensitivity of photoelastic coating. The fringe pattern of coating is modulated by a high frequency family which is called photocarrier. The isochromatic information is converted into deviation of standard carried fringe image. The modulation makes it convienent for computer to process the image. A specially designed system is used for image collecting and processing. By demodulating calculation, the whole-field fringe grades are determined automatically. The procedure of modulation and demodulation is demonstrated by an experimental example and the mathematic derivatin is discussed in detail. |
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| Keywords: | Photoelastic coating Photocarrier Modulation Demodulation |
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