New speckle pattern interferometry for precise in situ deformation measurements  

作　　者：章如月 Yu Fu 缪泓 Ruyue Zhang;Yu Fu;Hong Miao(CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China;Shenzhen Key Laboratory of Intelligent Optical Measurement and Detection,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China [2]Shenzhen Key Laboratory of Intelligent Optical Measurement and Detection,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China

出　　处：《Chinese Optics Letters》2024年第1期34-40,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11890683 and 11972235)。

摘　　要：A new electronic speckle pattern interferometry method is proposed to realize in situ deformation measurements.The feature of the method is the combination of a high-speed camera and multiple laser Doppler vibrometers(LDVs)for synchronous measurements.The high-speed camera is used to record and select effective interferograms,while the LDVs are used to measure the rigid body displacement caused by vibrations.A series of effective interferograms with known shifted phase values are obtained to calculate the deformation phase.The experimental results show that the method performs well in measuring static and dynamic deformations with high accuracy in vibrating environments.

关 键 词：speckle pattern interferometry laser Doppler vibrometers in situ deformation measurements 

分 类 号：O439[机械工程—光学工程]