| 相移数字云纹测量系统 |
| |
| 引用本文： | 赵兵,方如华.相移数字云纹测量系统[J].力学学报,1997,29(3):380-384. |
| |
| 作者姓名： | 赵兵 方如华 |
| |
| 作者单位： | 同济大学工程力学与技术系 |
| |
| 基金项目： | 上海市自然科学基金,国家留学回国人员基金 |
| |
| 摘 要： | 介绍了一种相位移数字云纹变形测量系统．测试系统采用ＣＣＤ摄像系统记录光栅图像，控制采样的空间频率大约为光栅线密度的整数倍，对试件栅进行采样后用数字信号处理的方法，实现空间相位移及进行实时数字云纹条纹显示，并对相移误差及光栅信号的高阶谐波的影响进行了校正
|
| 关 键 词： | 数字云纹 空间频率 相位移 云纹测量 |
DIGITAL MOIRE SYSTEM WITH PHASE SHIFTING METHOD |
| |
| Zhao Bing,Fang,Ruhua.DIGITAL MOIRE SYSTEM WITH PHASE SHIFTING METHOD[J].chinese journal of theoretical and applied mechanics,1997,29(3):380-384. |
| |
| Authors: | Zhao Bing Fang Ruhua |
| |
| Abstract: | A new deformation measurement technique with digital moire methods is presented. The image of a grating bonded onto a body under exa min ation is acquired with a CCD camera. The sample frequency is chosen as the times of grating density. Then, a special phase shifting method is realized by using digital signal processing technique. The influence of phase shift error and high harmonics in grating signal is automatically corrected. |
| |
| Keywords: | digital moire spatial frequency phase shifting |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《力学学报》浏览原始摘要信息 |
| 点击此处可从《力学学报》下载免费的PDF全文 |
|
