NDLI: Investigation of Project Moir: Interferometry Technique on Measuring Model Deformation

Content Provider	IEEE Xplore Digital Library
Author	Zhang Long Zhang Jun Yang Jianjun
Copyright Year	2013
Description	Author affiliation: Facility Designed & Instrum. Inst., China Aerodynamics R&D Center, Mianyang, China (Zhang Long; Zhang Jun; Yang Jianjun)
Abstract	PMI(Project Moiré Interferometry) technique is a non-contact measurement technique based on projection system, video acquirement and image processing and analysis, which can measure continuity of model deformation and acquire the information of whole field of camera view. Compared with VMD(Videogrammetric Model Deformation), PMI can provide continue image of model deformation which brings more precise measurement of model deformation in full field of view and continue space. PMI is mostly used in test measurement of aero-elasticity investigation in wind tunnel. Projecting isometry grids and parallel on the surface of model in wind tunnel, PMI can apply image processing to determine the deformation of model surface. When instability of aero-elasticity and flutter appear, the data acquired by PMI can be adequately describe the relation between instability and model deformation. This paper presents the basic principle of PMI measurement system. At the same time it describes the key techniques such as projection device, image acquiring, image processing, calibration in detail, giving some preliminary tests results, predicting the development of PMI technique.
Starting Page	273
Ending Page	277
File Size	675669
Page Count	5
File Format	PDF
ISBN	9780769550503
DOI	10.1109/ICIG.2013.58
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Deformable models Optical interferometry Fourier transforms videometrics noncontact measurement Optical variables measurement Optical imaging deformation interference Gratings Surface treatment
Content Type	Text
Resource Type	Article

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