一种数字图像技术实现应变测量的设计与实验对比

Design and Experimental Comparison of a Digital Image Technology to Achieve Strain Measurement

摘要:

基于数字图像处理技术设计实现了其在应变测量领域应用,采用了位移场-牛顿迭代法、应变估计处理进行了理论设计分析;在铝合金材料的变形测量实验中通过铝合金材料拉伸应变仪记录与数字图像设计方法对比得出:采用数字图像应变测量与记录仪基本一致,可以实现应变测量；构件表面散斑颗粒大小对设计的数字图像应变测量会产生一定的影响;文中设计的方法不仅实现了应变测量精度的改进,还提供了一种易于实施、有效的技术手段。

Abstract:

In this paper, digital image processing techniques is applied in the field of strain measurement, using the displacement field - Newton iterative method, strain estimation process theoretical design analysis, the final completion of the deformation measurement of speckle pattern formation. Tensile strain gauge aluminum material by recording and digital image design in aluminum alloy material deformation measurements in contrast to the experimental results:strain measurement using digital image consistent with the recorder. Strain measurement can be achieved; component surface particle size of digital image speckle strain measurement design will have some impact. The proposed method not only achieve the design of the strain measurement accuracy, also improved to provide an easy to implement, effective techniques.