Determination of damage location in RC beams using mode shape derivatives

Ismail, Zubaidah; Razak, Hashim Abdul; Rahman, Fuad

doi:10.1016/j.engstruct.2006.02.010

Cited by 66 publications

(37 citation statements)

References 11 publications

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“…Modal curvatures are the second derivatives of the mode shapes. Higher order derivatives such as forth order derivatives have also been applied for damage detection [40]. Modal curvatures are the basis of many vibration-based methods of non-destructive damage detection.…”

Section: Mode Shape Curvaturesmentioning

confidence: 99%

Studies on damage and FRP strengthening of reinforced concrete beams by vibration monitoring

Baghiee

Esfahani

Moslem

2009

Engineering Structures

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Section: Mode Shape Curvaturesmentioning

confidence: 99%

Studies on damage and FRP strengthening of reinforced concrete beams by vibration monitoring

Baghiee

Esfahani

Moslem

2009

Engineering Structures

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“…The mode shapes translations are experimentally obtained using double pulse TV holography and an acoustic excitation, Arau´jo Dos Santos et al [13]. Mode shape derivatives were used to determine the location of damages due to presence of single crack and honeycombs, Ismail et al [14].…”

Section: Introductionmentioning

confidence: 99%

Damage detection of flexural structural systems using damage index method – Experimental approach

Eraky

Anwar

Saad

et al. 2015

Alexandria Engineering Journal

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In the framework of structural health monitoring, continuous dynamic records are essential for good judgment of structures. Overall degradation of structures can be obtained with reasonable accuracy using various system identification techniques. It is however, challenging to obtain precisely the position and size of local damages. The current research focuses on Damage Index Method (DIM) as a tool for determining local damages occurred in flexural structural elements. The DIM technique depends on comparing modal strain energies of structures at different degradation stages. Self-made computer module was developed to encounter DIM for damage detection. First, the method was verified experimentally. Simply supported steel beam of 1500 mm (length), 50 mm (width) and 6 mm (thickness), in addition to steel plate of area 930 · 910 mm and 3 mm (thickness) was implemented in the experimental program. Both the beam and plate were subjected to different damage configurations. Collected acceleration time history was processed and used to verify the adequacy of DIM in identifying damages in the used physical models. Numerical parametric study was also conducted on a variety of beams and plates with various damage degrees and locations. It was noticed that both the experimental and numerical results showed good agreement in identifying damages in flexural structural elements. ª 2015 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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“…The mode shapes translations are experimentally obtained using double pulse TV holography and an acoustic excitation (Araújo dos Santos et al, 2006). Mode shape derivatives were used to determine the location of damages due to single cracks and due to honeycombs (Ismail et al, 2006). A story damage index was introduced as a simple formula based on modal frequency and mode shape for earthquake damaged structures .…”

Section: Introductionmentioning

confidence: 99%

Experimental damage identification using modified mode shape difference

Elshafey

Marzouk

Haddara

2011

J. Marine. Sci. Appl.

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An experimental program was undertaken to test the feasibility to detect the occurrence of structural damage using a modified mode shape difference technique. The vibration response of a steel beam fixed at one end and hinged at the other was obtained for the intact and damage conditions. Modal analysis was performed to extract the frequencies and mode shapes. The method shows a good potential in detection of occurrence and location of damage.

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Determination of damage location in RC beams using mode shape derivatives

Cited by 66 publications

References 11 publications

Studies on damage and FRP strengthening of reinforced concrete beams by vibration monitoring

Studies on damage and FRP strengthening of reinforced concrete beams by vibration monitoring

Damage detection of flexural structural systems using damage index method – Experimental approach

Experimental damage identification using modified mode shape difference

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