Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/103902
Title: Interferometric dynamic measurement : techniques based on high-speed imaging or a single photodetector
Authors: Fu, Yu
Pedrini, Giancarlo
Li, Xide
Keywords: DRNTU::Engineering::Mechanical engineering
Issue Date: 2014
Source: Fu, Y., Pedrini, G., & Li, X. (2014). Interferometric Dynamic Measurement: Techniques Based on High-Speed Imaging or a Single Photodetector. The Scientific World Journal, 2014, 232906-.
Series/Report no.: The scientific world journal
Abstract: In recent years, optical interferometry-based techniques have been widely used to perform noncontact measurement of dynamic deformation in different industrial areas. In these applications, various physical quantities need to be measured in any instant and the Nyquist sampling theorem has to be satisfied along the time axis on each measurement point. Two types of techniques were developed for such measurements: one is based on high-speed cameras and the other uses a single photodetector. The limitation of the measurement range along the time axis in camera-based technology is mainly due to the low capturing rate, while the photodetector-based technology can only do the measurement on a single point. In this paper, several aspects of these two technologies are discussed. For the camera-based interferometry, the discussion includes the introduction of the carrier, the processing of the recorded images, the phase extraction algorithms in various domains, and how to increase the temporal measurement range by using multiwavelength techniques. For the detector-based interferometry, the discussion mainly focuses on the single-point and multipoint laser Doppler vibrometers and their applications for measurement under extreme conditions. The results show the effort done by researchers for the improvement of the measurement capabilities using interferometry-based techniques to cover the requirements needed for the industrial applications.
URI: https://hdl.handle.net/10356/103902
http://hdl.handle.net/10220/20030
ISSN: 2356-6140
DOI: 10.1155/2014/232906
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: Temasek Laboratories 
Rights: © 2014 Yu Fu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles
TL Journal Articles

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