Motion tracking of scaled bridge induced by wind force

Seungtaek Oh, Hak Eun Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publicationProceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
PublisherEuropean Association for Structural Dynamics
Pages2179-2184
Number of pages6
Volume2014-January
ISBN (Electronic)9789727521654
Publication statusPublished - 2014
Event9th International Conference on Structural Dynamics, EURODYN 2014 - Porto, Portugal
Duration: 2014 Jun 302014 Jul 2

Other

Other9th International Conference on Structural Dynamics, EURODYN 2014
CountryPortugal
CityPorto
Period14/6/3014/7/2

Fingerprint

Lasers
Transducers
Mountings
Fast Fourier transforms
Wind tunnels

Keywords

  • Displacement
  • Errors
  • Frequency
  • Motion tracking technique

ASJC Scopus subject areas

  • Building and Construction
  • Architecture
  • Civil and Structural Engineering

Cite this

Oh, S., & Lee, H. E. (2014). Motion tracking of scaled bridge induced by wind force. In Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014 (Vol. 2014-January, pp. 2179-2184). European Association for Structural Dynamics.

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 proceedingConference contribution

Oh, S & Lee, HE 2014, Motion tracking of scaled bridge induced by wind force. in Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. vol. 2014-January, European Association for Structural Dynamics, pp. 2179-2184, 9th International Conference on Structural Dynamics, EURODYN 2014, Porto, Portugal, 14/6/30.
Oh S, Lee HE. Motion tracking of scaled bridge induced by wind force. In Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. Vol. 2014-January. European Association for Structural Dynamics. 2014. p. 2179-2184
Oh, Seungtaek ; Lee, Hak Eun. / Motion tracking of scaled bridge induced by wind force. Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. Vol. 2014-January European Association for Structural Dynamics, 2014. pp. 2179-2184
@inproceedings{9b4a57ef548c45ca88d949cb20e8ea72,
title = "Motion tracking of scaled bridge induced by wind force",
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.",
keywords = "Displacement, Errors, Frequency, Motion tracking technique",
author = "Seungtaek Oh and Lee, {Hak Eun}",
year = "2014",
language = "English",
volume = "2014-January",
pages = "2179--2184",
booktitle = "Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014",
publisher = "European Association for Structural Dynamics",

}

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 -