Přístupnostní navigace
E-application
Search Search Close
Publication detail
WEI, Q. XU, H. LI, Y. CHEN, L. NOVÁK, D. CUI, L. CAO, M.
Original Title
Identification of Damage on Sluice Hoist Beams Using Local Mode Evoked by Swept Frequency Excitation
Type
journal article in Web of Science
Language
English
Original Abstract
As a global vibration characteristic, natural frequency often suffers from insufficient sensitivity to structural damage, which is associated with local variations of structural material or geometric properties. Such a drawback is particularly significant when dealing with the large scale and complexity of sluice structural systems. To this end, a damage detection method in sluice hoist beams is proposed that relies on the utilization of the local primary frequency (LPF), which is obtained based on the swept frequency excitation (SFE) technique and local resonance response band (LRRB) selection. Using this method, the local mode of the target sluice hoist beam can be effectively excited, while the vibrations of other components in the system are suppressed. As a result, the damage will cause a significant shift in the LPF of the sluice hoist beam at the local mode. A damage index was constructed to quantitatively reflect the damage degree of the sluice hoist beam. The accuracy and reliability of the proposed method were verified on a three-dimensional finite element model of a sluice system, with the noise resistance increased from 0.05 to 0.2 based on the hammer impact method. The proposed method exhibits promising potential for damage detection in complex structural systems.
Keywords
hoist beam; damage detection; local primary frequency; local mode; local resonance response band
Authors
WEI, Q.; XU, H.; LI, Y.; CHEN, L.; NOVÁK, D.; CUI, L.; CAO, M.
Released
23. 8. 2021
Publisher
MDPI
Location
BASEL
ISBN
1424-8220
Periodical
SENSORS
Year of study
21
Number
19
State
Swiss Confederation
Pages from
1
Pages to
16
Pages count
URL
https://www.mdpi.com/1424-8220/21/19/6357/htm
Full text in the Digital Library
http://hdl.handle.net/11012/204051
BibTex
@article{BUT176243, author="Qing Yang {Wei} and Hao {Xu} and Yifei {Li} and Li {Chen} and Drahomír {Novák} and Li {Cui} and Maosen {Cao}", title="Identification of Damage on Sluice Hoist Beams Using Local Mode Evoked by Swept Frequency Excitation", journal="SENSORS", year="2021", volume="21", number="19", pages="1--16", doi="10.3390/s21196357", issn="1424-8220", url="https://www.mdpi.com/1424-8220/21/19/6357/htm" }