Abstract
In wind tunnel test, laser displacement transducer is widely used to extract displacement of scaled bridge induced by wind force. But, laser displacement transducer is not appropriate to measure multipoint displacements and it has a restriction that mounted location cannot be movable. Furthermore, it need to keep a certain distance from each other in order to avoid the error caused by the electrical interference. In this study, the motion tracking technique is proposed to overcome these shortcomings of the conventional measurement. The motion tracking technique is the method to extract the displacement from images which have regular time intervals sequentially. And according to improve on measurement method, the motion tracking technique reduces the errors which are occurred by having no consideration for lateral degree of freedom (DOF) and by mounting the location of laser. As a Fast Fourier transform (FFT) analysis result, displacement from images extract the frequencies by own degree of freedom effect, whereas the displacement from laser. And the time history analysis represents that displacement from images is more exact to extract vertical displacement compared with displacement of laser.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014 |
| Publisher | European Association for Structural Dynamics |
| Pages | 2179-2184 |
| Number of pages | 6 |
| Volume | 2014-January |
| ISBN (Electronic) | 9789727521654 |
| Publication status | Published - 2014 |
| Event | 9th International Conference on Structural Dynamics, EURODYN 2014 - Porto, Portugal Duration: 2014 Jun 30 → 2014 Jul 2 |
Other
| Other | 9th International Conference on Structural Dynamics, EURODYN 2014 |
|---|---|
| Country | Portugal |
| City | Porto |
| Period | 14/6/30 → 14/7/2 |
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Keywords
- Displacement
- Errors
- Frequency
- Motion tracking technique
ASJC Scopus subject areas
- Building and Construction
- Architecture
- Civil and Structural Engineering
Cite this
Motion tracking of scaled bridge induced by wind force. / Oh, Seungtaek; Lee, Hak Eun.
Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. Vol. 2014-January European Association for Structural Dynamics, 2014. p. 2179-2184.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Motion tracking of scaled bridge induced by wind force
AU - Oh, Seungtaek
AU - Lee, Hak Eun
PY - 2014
Y1 - 2014
N2 - In wind tunnel test, laser displacement transducer is widely used to extract displacement of scaled bridge induced by wind force. But, laser displacement transducer is not appropriate to measure multipoint displacements and it has a restriction that mounted location cannot be movable. Furthermore, it need to keep a certain distance from each other in order to avoid the error caused by the electrical interference. In this study, the motion tracking technique is proposed to overcome these shortcomings of the conventional measurement. The motion tracking technique is the method to extract the displacement from images which have regular time intervals sequentially. And according to improve on measurement method, the motion tracking technique reduces the errors which are occurred by having no consideration for lateral degree of freedom (DOF) and by mounting the location of laser. As a Fast Fourier transform (FFT) analysis result, displacement from images extract the frequencies by own degree of freedom effect, whereas the displacement from laser. And the time history analysis represents that displacement from images is more exact to extract vertical displacement compared with displacement of laser.
AB - In wind tunnel test, laser displacement transducer is widely used to extract displacement of scaled bridge induced by wind force. But, laser displacement transducer is not appropriate to measure multipoint displacements and it has a restriction that mounted location cannot be movable. Furthermore, it need to keep a certain distance from each other in order to avoid the error caused by the electrical interference. In this study, the motion tracking technique is proposed to overcome these shortcomings of the conventional measurement. The motion tracking technique is the method to extract the displacement from images which have regular time intervals sequentially. And according to improve on measurement method, the motion tracking technique reduces the errors which are occurred by having no consideration for lateral degree of freedom (DOF) and by mounting the location of laser. As a Fast Fourier transform (FFT) analysis result, displacement from images extract the frequencies by own degree of freedom effect, whereas the displacement from laser. And the time history analysis represents that displacement from images is more exact to extract vertical displacement compared with displacement of laser.
KW - Displacement
KW - Errors
KW - Frequency
KW - Motion tracking technique
UR - http://www.scopus.com/inward/record.url?scp=84994438780&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994438780&partnerID=8YFLogxK
M3 - Conference contribution
VL - 2014-January
SP - 2179
EP - 2184
BT - Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
PB - European Association for Structural Dynamics
ER -