NDLI: A New Method of Obtaining Modal Sensitivity for Damage Location in Beam Structure

Content Provider	IEEE Xplore Digital Library
Author	Zhu Kang Lei Liping Zeng Pan
Copyright Year	2015
Description	Author affiliation: Tsinghua Univ., Beijing, China (Zhu Kang; Lei Liping; Zeng Pan)
Abstract	In beam structure, damage detection is important to the safety during its usage. The non-destructive method (NDM) based on based on variation of natural frequencies of structure are powerful and commonly employed. However, the modal sensitivity of structure, which is the key information used in NDM algorithms is usually obtained with numerical calculation, which may bring inaccuracy due to the error in numerical calculation and the difference between the real structure and the numerical model. In response to the problems mentioned above, this paper proposes a new method to obtain modal sensitivity of beam structure, which is totally based on experimental data rather than numerical simulation. In this new method, a mass is attached to the testing beam to obtain the modal sensitivity. After the modal sensitivity is obtained, an artificial defection is made to the testing beam. With the modal sensitivity achieved, the location the defection is successfully determined with relatively small error, which confirms the feasibility of this new method.
Sponsorship	Hunan Inst. Ind.
Starting Page	31
Ending Page	34
File Size	163245
Page Count	4
File Format	PDF
e-ISBN	9781467371438
DOI	10.1109/ICMTMA.2015.16
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations additional mass beam structure Sensitivity damage detection Numerical simulation Frequency measurement Numerical models Structural beams modal sensitivity Testing
Content Type	Text
Resource Type	Article

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