Digital speckle interferometry: some developments and applications for vibration measurement in the automotive industry
Digital speckle interferometry: some developments and applications for vibration measurement in the automotive industry
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DOI：
10.1117/1.601655
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发表时间：
1998-05
影响因子：
1.3
通讯作者：
Fang Chen;C. T. Griffen;T. E. Allen
中科院分区：
文献类型：
--
作者：
Fang Chen;C. T. Griffen;T. E. Allen
本文概述了数字散斑干涉测量的一些最新进展及其在汽车行业振动测量中的应用。它描述了生成质量更好的原始振动条纹图案的三种方法；提供散斑平均、相移和相位重建迭代程序，以产生高质量且无噪声的条纹图案；说明了用于测量物体的振动变形和几何形状的单一装置；并展示了该工具在整车模态测量、交互式设计优化、CAE模型关联和无损检测方面的强大功能。最后，提出了进一步发展的领域。
This paper presents an overview of some recent progress in digital speckle interferometry and its application for vibration measurement in the automotive industry. It describes three methods to generate raw vibration fringe patterns with better quality; provides speckle averaging, phase shifting, and phase reconstruction iteration procedures to produce a high-quality and noise-free fringe pattern; illustrates one single setup for measuring both vibration deformation and geometric shape of an object; and demonstrates how powerful this tool is for whole vehicle modal survey, interactive design optimization, CAE model correlation, and nondestructive testing. Finally, areas for further development are suggested.