Vibration of cracked structures: A state of the art review

Dimarogonas, Andrew D.

doi:10.1016/0013-7944(94)00175-8

Cited by 982 publications

(481 citation statements)

References 133 publications

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“…Damage is introduced in the model by allowing for a localised loss in stiffness due to a crack. Dimarogonas [30] gives an extensive review of the different modelling techniques that can be used to model the damage due to a crack. The stiffness reduction used in this paper is the one proposed by Sinha et al [19] which quantifies a gradual loss of bending stiffness that extends 1.5 times the depth of the beam at both sides of the crack ( Zone experiencing gradual loss in stiffness…”

Section: A(t) + C V(t) + K Y(t) = F(t)mentioning

confidence: 99%

An investigation into the acceleration response of a damaged beam-type structure to a moving force

González

Hester

2013

Journal of Sound and Vibration

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Publication information Journal of Sound and Vibration, 332 (13): 3201-3217Publisher Elsevier Item record/more information http://hdl.handle.net/10197/6212 Publisher's statementThis is the author's version of a work that was accepted for publication in Journal of Sound and Vibration. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Sound and Vibration (VOL 332, ISSUE 13, (2013) that did not appear in the healthy structure is present in the response of the damaged structure. This paper elucidates from first principles how the acceleration response can be assumed to consist of 'static' and 'dynamic' components, and where the beam has experienced a localised loss in stiffness, an additional 'damage' component. The combination of these components establishes how the damage singularity will appear in the total response.For a given damage severity, the amplitude of the 'damage' component will depend on how close the damage location is to the sensor, and its frequency content will increase with higher velocities of the moving force. The latter has implications for damage detection because if the frequency content of the 'damage' component includes bridge and/or vehicle frequencies, it becomes more difficult to identify damage. The paper illustrates how a thorough understanding of the relationship between the 'static' and 'damage' components contributes *Manuscript Click here to download Manuscript: Manuscript RevC.doc Click here to view linked References 2 to establish if damage has occurred and to provide an estimation of its location and severity.The findings are corroborated using accelerations from a planar finite element simulation model where the effects of force velocity and bridge span are examined.

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Section: A(t) + C V(t) + K Y(t) = F(t)mentioning

confidence: 99%

An investigation into the acceleration response of a damaged beam-type structure to a moving force

González

Hester

2013

Journal of Sound and Vibration

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“…The level 3 quantifies the extent of damage and level 4 predicates the life of the structure. The local flexibility that affects the vibration signatures has been suggested by Dimarogonas [6] in his review paper. The crack opening and closing happen in time that depends upon the vibration and rotation amplitude.…”

Section: Difference Between Artificial Neural Network and Fuzzy Logicmentioning

confidence: 94%

“…LS1, LS2 up to LS10 rsnf [1][2][3][4][5][6][7][8][9][10] Low ranges of relative natural frequency for second mode of vibration in ascending order respectively.…”

Section: Details Of Fuzzy Logic Modelsmentioning

confidence: 99%

Comparison of Artificial Neural Networks and Fuzzy Logic Approaches for Crack Detection in a Beam Like Structure

B¹,

Jayasree²,

Hegde³

2018

IJAIA

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“…Разработке методов инструментальной идентифика-ции параметров механических колебательных систем по их виброакустическим характеристикам посвящено ряд публикаций [1][2][3][4][5][6][7][8]. Часть исследований направлена на выявление природы вибраций, их характера, уровня, частотного состава, основных резонансов, демпфиро-вания и ряда других параметров [1,2].…”

Section: анализ литературных данных и постановка проблемыunclassified

“…Значительный интерес представляет также исследование процессов, связанных с распознаванием состояния динамической структуры системы [3,4]. Высокая информативность анализируемых вибрационных спектров и нагрузочных сигналограмм подтверждается в публикациях [5,6].…”

Section: анализ литературных данных и постановка проблемыunclassified

Experimental verification of validity of mathematical models of the oscillatory systems

Дяченко

2016

TAPR

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Vibration of cracked structures: A state of the art review

Cited by 982 publications

References 133 publications

An investigation into the acceleration response of a damaged beam-type structure to a moving force

An investigation into the acceleration response of a damaged beam-type structure to a moving force

Comparison of Artificial Neural Networks and Fuzzy Logic Approaches for Crack Detection in a Beam Like Structure

Experimental verification of validity of mathematical models of the oscillatory systems

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