激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2014年
2期
39-41
,共3页
丁效红%宋庆和%宫爱玲
丁效紅%宋慶和%宮愛玲
정효홍%송경화%궁애령
数字剪切散斑%离面位移分布%条纹骨架线%相位识别
數字剪切散斑%離麵位移分佈%條紋骨架線%相位識彆
수자전절산반%리면위이분포%조문골가선%상위식별
digital shearography%out-of-plane displacement distribution%stripes skeleton%phase measurement
本文在阐述数字剪切散斑条纹及条纹骨架线的获得方法的基础上，对条纹骨架线沿剪切方向进行相位拟合，从而获得与离面位移导数成比例的相位变化曲线。通过引入高斯插值函数，即可定量标定出离面位移分布。同时进行了理论模拟和实验研究，结果表明该方法切实可行。为数字剪切散斑定量检测离面位移提供一种有效的计算方法。
本文在闡述數字剪切散斑條紋及條紋骨架線的穫得方法的基礎上，對條紋骨架線沿剪切方嚮進行相位擬閤，從而穫得與離麵位移導數成比例的相位變化麯線。通過引入高斯插值函數，即可定量標定齣離麵位移分佈。同時進行瞭理論模擬和實驗研究，結果錶明該方法切實可行。為數字剪切散斑定量檢測離麵位移提供一種有效的計算方法。
본문재천술수자전절산반조문급조문골가선적획득방법적기출상，대조문골가선연전절방향진행상위의합，종이획득여리면위이도수성비례적상위변화곡선。통과인입고사삽치함수，즉가정량표정출리면위이분포。동시진행료이론모의화실험연구，결과표명해방법절실가행。위수자전절산반정량검측리면위이제공일충유효적계산방법。
This paper describes the acquisition methods of digital shearograpy stripes and stripes skeleton firstly. Then the fitting phase curve can be obtained by stripes skeleton along the shear direction. It is proportional to the derivative of out-of-plane displace-ment. The out-of-plane displacement distribution can be calculated quantificationally using Gaussian Interpolation Function. With the research of theoretical simulation and experiment, the results indicate that the method is feasible. It could provide an effective calcula-tion method for measuring out-of-plane displacement based on the digital shearography.
