Shearographic NDT Using Dynamic Stressing And Peak Image-Intensity Storage Technique

机译：使用动态应力和峰值图像强度存储技术的剪切式无损检测

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A method based on digital shearography is desc ribed for nondestructive flaw detection. Vibration excitation is imposed on the object whose deforamtion is continuously recorded with a video camera. Sequential image-substraction of two video frames is carried out on a pixel-by-pixel basis. The current image-difference is compared with the existing image-difference, storing into computer memory only the higher value of the two. With higher deformation rate at the defective area than the non-defective area, white patches are displayed on the computer monitor at regions where defects are located.

机译：描述了一种基于数字剪切的方法，用于无损探伤。振动激励作用于通过摄像机连续记录其变形的物体。两个视频帧的顺序图像减法是逐像素进行的。将当前的图像差异与现有的图像差异进行比较，仅将两者中较高的值存储到计算机内存中。缺陷区域的变形率高于非缺陷区域的变形率，白色斑点会在计算机监视器上显示缺陷所在的区域显示。

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《SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida》|2000年|p.56-59|共4页
会议地点 Orlando FL(US)
作者
Y. Y. Hung; W. D. Luo; X. Wen; H. M. Shang;
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正文语种 eng
中图分类一般工业技术;
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Shearographic NDT Using Dynamic Stressing And Peak Image-Intensity Storage Technique

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