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Content Provider | IEEE Xplore Digital Library |
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Author | Hua Yang Takaki, T. Ishii, I. |
Copyright Year | 2012 |
Description | Author affiliation: Robotics Laboratory, Department of System Cybernetics, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan (Hua Yang; Takaki, T.; Ishii, I.) |
Abstract | In this study, we develop a dynamics-based visual inspection system that can simultaneously estimate the multidirectional modal parameters of a beam-shaped object under unknown excitation in the audio-frequency range. Our system can measure the three-dimensional (3D) vibration distribution of a beam-shaped object by processing stereo 512×96 images at 10000 fps in real time. Furthermore, it can determine its resonant frequencies and mode shapes along 72 different directions around its axis for inspecting the asymmetric dynamic properties around the axis by implementing a fast output-only modal parameter estimation method on a stereo high-speed vision system. To demonstrate the performance of our system, several steel cantilever beams with artificial cracks vibrating at hundreds of hertz were estimated in real time in order to inspect their asymmetric dynamic properties due to the cracks by estimating their modal parameters along the 72 directions around their beam axes. |
Starting Page | 1 |
Ending Page | 4 |
File Size | 444621 |
Page Count | 4 |
File Format | |
ISBN | 9781457717666 |
ISSN | 19300395 |
e-ISBN | 9781457717673 |
e-ISBN | 9781457717659 |
DOI | 10.1109/ICSENS.2012.6411142 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2012-10-28 |
Publisher Place | Taiwan |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Cameras Real-time systems Inspection Structural beams Vectors Parameter estimation Visualization |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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