数字散斑干涉三维变形测量技术研究进展

Three-dimensional deformation measurement based on digital speckle pattern interferometry

三维变形可以转换为应力/应变分布,是材料性能测试和结构可靠性分析的关键参数。在众多三维变形测量技术中,数字散斑干涉技术可以高精度地测量三维变形信息,在航空航天、汽车、先进制造、土木工程和生物医学等行业发挥着十分重要的作用。从散斑干涉基本原理出发,详细介绍了几类三维变形散斑干涉测量技术,并分析比较各类方法的优缺点;同时介绍了散斑干涉三维变形测量技术的国内外研究进展和最新应用;最后展望了散斑干涉三维变形测量技术在动态同步测量、测量系统简化以及应用范围扩宽等方面的发展趋势。

Three-dimensional deformation can be converted into stress-strain distribution, which is the key parameter in material performance test and structure reliability analysis. Among many three-dimensional deformation measurement techniques, digital speckle pattern interferometry can measure the three-dimensional deformation information with high precision. And it plays a very important role in the industries of aerospace,automotive, advanced equipment manufacturing, civil engineering, biomedicine and so on. Based on the basic principle of speckle pattern interferometry, several kinds of three-dimensional deformation speckle pattern interferometry were introduced in detail and their advantages as well as disadvantages were analyzed and compared;at the same time, the research progress and latest application of three-dimensional deformation speckle pattern interferometry at home and abroad were introduced;at last, the development trend of threedimensional deformation speckle pattern interferometry in dynamic synchronous measurement, measurement system simplification and application range broadening was prospected.