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A NUMERICAL STUDY OF STRUCTURAL DAMAGE DETECTION USING CHANGES IN THE ROTATION OF MODE SHAPES

✍ Scribed by M.A.-B. ABDO; M. HORI

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
439 KB
Volume
251
Category
Article
ISSN
0022-460X

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✦ Synopsis

Damage detection using changes in global dynamic characteristics has been a hot research topic and attracted civil, aerospace, and mechanical engineering communities in recent years. In this paper, a numerical study of the relationship between damage characteristics and the changes in the dynamic properties is presented. It is found that the rotation of mode shape is a sensitive indicator of damage. The numerical results clarify that the rotation of mode shape has the characteristic of localization at the damaged region even though the displacement modes are not localized. Also, the results illustrate that the rotations of modes are robust in locating multiple damage locations with di!erent sizes in a structure. Furthermore, using the changes in the rotation of mode shape does not need very "ne grid of measurements to detect and locate damage, e!ectively.

2002 Elsevier Science Ltd.

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