Application of digital photometry techniques in identifying the modal frequencies of stay cables

Chien Chou Chen, Wen Hwa Wu, Hong-Zeng Tseng, Gwolong Lai, I. Der Shieh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Benefiting from the rapid advances in related technologies, digital camcorders have not only been significantly improved in image resolution and sampling frequency, but also become much more popular because of friendly operation and reduced cost. Consequently, the technique of digital photometry has recently been attempted for its possible application in the measurement and identification of various physical quantities. This paper is aimed to develop the application of consumer grade digital camcorders in the ambient vibration measurements of structures. Furthermore, several problems and corresponding solutions in identifying the modal frequencies based on these measurements are also explored. The proposed digital photometry technique has been successfully applied in the on-site ambient vibration measurements for the stay cables of Chi-Lu Bridge and the subsequent identified results of modal frequencies clearly verify that it hold almost the same order of accuracy as that with high-resolution velocimeters.

Original languageEnglish
Pages (from-to)411-421
Number of pages11
JournalJournal of the Chinese Institute of Civil and Hydraulic Engineering
Volume22
Issue number4
Publication statusPublished - 2010 Dec 1

Fingerprint

Photometry
Vibration measurement
Video cameras
Cables
Image sampling
Velocimeters
Image resolution
Costs

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

@article{0090692aeaec4b2eb3ef583c87a54abe,
title = "Application of digital photometry techniques in identifying the modal frequencies of stay cables",
abstract = "Benefiting from the rapid advances in related technologies, digital camcorders have not only been significantly improved in image resolution and sampling frequency, but also become much more popular because of friendly operation and reduced cost. Consequently, the technique of digital photometry has recently been attempted for its possible application in the measurement and identification of various physical quantities. This paper is aimed to develop the application of consumer grade digital camcorders in the ambient vibration measurements of structures. Furthermore, several problems and corresponding solutions in identifying the modal frequencies based on these measurements are also explored. The proposed digital photometry technique has been successfully applied in the on-site ambient vibration measurements for the stay cables of Chi-Lu Bridge and the subsequent identified results of modal frequencies clearly verify that it hold almost the same order of accuracy as that with high-resolution velocimeters.",
author = "Chen, {Chien Chou} and Wu, {Wen Hwa} and Hong-Zeng Tseng and Gwolong Lai and Shieh, {I. Der}",
year = "2010",
month = "12",
day = "1",
language = "English",
volume = "22",
pages = "411--421",
journal = "Journal of the Chinese Institute of Civil and Hydraulic Engineering",
issn = "1015-5856",
publisher = "Chinese Institute of Civil and Hydraulic Engineering",
number = "4",

}

Application of digital photometry techniques in identifying the modal frequencies of stay cables. / Chen, Chien Chou; Wu, Wen Hwa; Tseng, Hong-Zeng; Lai, Gwolong; Shieh, I. Der.

In: Journal of the Chinese Institute of Civil and Hydraulic Engineering, Vol. 22, No. 4, 01.12.2010, p. 411-421.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Application of digital photometry techniques in identifying the modal frequencies of stay cables

AU - Chen, Chien Chou

AU - Wu, Wen Hwa

AU - Tseng, Hong-Zeng

AU - Lai, Gwolong

AU - Shieh, I. Der

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Benefiting from the rapid advances in related technologies, digital camcorders have not only been significantly improved in image resolution and sampling frequency, but also become much more popular because of friendly operation and reduced cost. Consequently, the technique of digital photometry has recently been attempted for its possible application in the measurement and identification of various physical quantities. This paper is aimed to develop the application of consumer grade digital camcorders in the ambient vibration measurements of structures. Furthermore, several problems and corresponding solutions in identifying the modal frequencies based on these measurements are also explored. The proposed digital photometry technique has been successfully applied in the on-site ambient vibration measurements for the stay cables of Chi-Lu Bridge and the subsequent identified results of modal frequencies clearly verify that it hold almost the same order of accuracy as that with high-resolution velocimeters.

AB - Benefiting from the rapid advances in related technologies, digital camcorders have not only been significantly improved in image resolution and sampling frequency, but also become much more popular because of friendly operation and reduced cost. Consequently, the technique of digital photometry has recently been attempted for its possible application in the measurement and identification of various physical quantities. This paper is aimed to develop the application of consumer grade digital camcorders in the ambient vibration measurements of structures. Furthermore, several problems and corresponding solutions in identifying the modal frequencies based on these measurements are also explored. The proposed digital photometry technique has been successfully applied in the on-site ambient vibration measurements for the stay cables of Chi-Lu Bridge and the subsequent identified results of modal frequencies clearly verify that it hold almost the same order of accuracy as that with high-resolution velocimeters.

UR - http://www.scopus.com/inward/record.url?scp=79953117601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79953117601&partnerID=8YFLogxK

M3 - Article

VL - 22

SP - 411

EP - 421

JO - Journal of the Chinese Institute of Civil and Hydraulic Engineering

JF - Journal of the Chinese Institute of Civil and Hydraulic Engineering

SN - 1015-5856

IS - 4

ER -