Application of clan member signal method
in structural damage detection
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Guo Xun (¹ù Ѹ)1,
B.F. Spencer2 and Lu Shunan (¬Êééª)1
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1 Institute of
Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
2 Dept of Civil and Environmental Engineering, University of Illinois at
Urbana-Champaign, USA
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Abstract: It is well known that in most cases, a
reference is necessary for structural health diagnosis, and it is very difficult
to obtain such a reference for a given structure. In this paper, a clan member
signal method (CMSM) is proposed for use in structures consisting of groups (or
clans) that have the same geometry, i.e., the same cross section and length, and
identical boundary conditions. It is expected that signals measured on any
undamaged member in a clan after an event could be used as a reference for any
other members in the clan. To verify the applicability of the proposed method, a
steel truss model is tested and the results show that the CMSM is very effective
in detecting local damage in structures composed of identical slender members.
Keywords: damage detection; health
monitoring; vibration based; clan member signal method; local damage
