摘要
提出了利用单幅电子散斑物体变形相位图分离二维分量的方法.传统电子散斑干涉技术测量得到的是物体变形的混合相位场.当物体具有对称变形时,可通过图像处理的方法,获得二维变形的分量值.利用三点加载的简支梁进行了实验,给出了实验结果,验证了该方法的正确性,该方法保持了传统电子散斑干涉系统的简单、稳定、便于应用的优点,并进一步得到了二维场分量的信息.
A method about the isolation of two - dimensional displacement for one phase map is presented. When the typical ESPI is used for displacement measurement, a mixed phase distribution of deformation can be measured. If the deformation of the object is symmetrical, two components of deformation can be obtained by image processing. A typical experiment using a three - point - bending is completed. The exerimental results prove correctness of the method. The method presented does not only keep advantages of simpleness, stability and applicability, but also obtain the in - plane displacement and out- plane displacement simultaneously.
出处
《山东师范大学学报（自然科学版）》
CAS
2007年第1期46-48,共3页
Journal of Shandong Normal University(Natural Science)
关键词
电子散斑干涉
位移测量
对称变形场
electronic spckle pattern interferemetry （ESPI）
displacement measurement
symmetrical deformation
