Structural damage detection using the transformation matrix

Escobar, J. Alberto; Sosa, J Jesús; Gómez, R.

doi:10.1016/j.compstruc.2004.08.013

Cited by 24 publications

(15 citation statements)

References 25 publications

(33 reference statements)

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“…Non-destructive testing can be performed in a scheduled and repetitive manner as required, to detect cracks or defects in structural elements. Examples of these elements are aircraft components suffering barely visible impact damage, and bridge and building structures suffering earthquake damage, amongst others [1][2][3][4][5][6]. Types of non-destructive testing include visual inspection, ultrasound and magnetic field tests, etc.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these limitations, another type of non-destructive technique which can be used to assess structural damage in situ involves the measurement of vibration characteristics, namely the natural frequencies and mode shapes. The presence of cracks in a structural element changes its vibration characteristics and those of the assembled structure [1][2][3][4][5][6][7][8][9]. Natural frequencies can be measured at any chosen point of the structure and are independent of the location of measurements [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Crack localisation in frames using natural frequency degradations

Labib

Kennedy

Featherston

2015

Computers & Structures

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crack localisation in frames using natural frequency degradations

Labib

Kennedy

Featherston

2015

Computers & Structures

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“…The differences in the POM data sets extracted from the FRFs with a step of 0.02 Hz in the frequency range of 26-28 Hz at two states before and after the mass 6,7,8,9,10. Each plot has two curves depending on the existence of external noise.…”

Section: Damage Detection Of a Two-dimensional Frame Structurementioning

confidence: 99%

Damage identification of a frame structure model based on the response variation depending on additional mass

Lee

Eun

2014

Engineering with Computers

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“…In Section 3, the DFM was calibrated using a ten-story and four-bay frame building, then the DFM was applied to this frame building, which was damaged during the earthquake in Mexico on September 19, 1985 [32]. is building was previously studied by Escobar et al using a structural damage detection method called Matrix Transformation Method [33], and by Rodríguez et al using the Baseline Stiffness Method [34].…”

Section: Introductionmentioning

confidence: 99%

Damaged Flexibility Matrix Method for Damage Detection of Frame Buildings

Oyola¹,

Fonseca²,

Rocha³

2020

Advances in Civil Engineering

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is study presents the damaged flexibility matrix method (DFM) to identify and determine the magnitude of damage in structural elements of plane frame buildings. Damage is expressed as the increment in flexibility along the damaged structural element. is method uses a new approach to assemble the flexibility matrix of the structure through an iterative process, and it adjusts the eigenvalues of the damaged flexibility matrices of each system element. e DFM was calibrated using numerical models of plane frames of buildings studied by other authors. e advantage of the DFM, with respect to other flexibility-based methods, is that DFM minimizes the adverse effect of modal truncation. e DFM demonstrated excellent accuracy with complete modal information, even when it was applied to a more realistic scenario, considering frequencies and modal shapes measured from the recorded accelerations of buildings stories. e DFM also presents a new approach to simulate the effects of noise by perturbing matrices of flexibilities. is approach can be useful for research on realistic damage detection. e combined effects of incomplete modal information and noise were studied in a ten-story four-bay building model taken from the literature. e ability of the DFM to assess structural damage was corroborated. Application of the proposed method to a ten-story four-bay building model demonstrates its efficiency to identify the flexibility increment in damaged structural elements.

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Structural damage detection using the transformation matrix

Cited by 24 publications

References 25 publications

Crack localisation in frames using natural frequency degradations

Crack localisation in frames using natural frequency degradations

Damage identification of a frame structure model based on the response variation depending on additional mass

Damaged Flexibility Matrix Method for Damage Detection of Frame Buildings

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