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Application of universal bank of natural frequency indexes in damage location of beams with fixed ends(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2005年04期
Page:
40-44
Research Field:
Publishing date:
2006-12-20

Info

Title:
Application of universal bank of natural frequency indexes in damage location of beams with fixed ends
Author(s):
ZHANG Yang;  LI Guo-qiang
School of Civil Engineering, Tongji University, Shanghai 200092, China
Keywords:
damage location;  natural frequency;  beam with fixed end;  bank of frequency index;  damage factor
PACS:
U445.7
DOI:
-
Abstract:
The theory of damage location of beams using data of natural frequencies was presented. Authors found out that several parameters of beams based on natural frequencies(ratio of changes in frequency, RCF)were only related to the damage location and uncorrelated to the extent of damages. After that, based on the theory of damage location, the way to establish a universal bank of natural frequency indexes for damage location of beams with fixed ends was presented, using the ratio of changes in frequency. The influences of the extent of damage were also discussed during the process. Finally, the effectiveness and universality of the bank were confirmed by two different numerical models of beams. Hence an approach for the damagelocation of beams with fixed ends was established.

References:

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Memo

Memo:
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Last Update: 2006-12-20