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Damage assessment and diagnosis of hydraulic concrete structures using optimization-based machine learning

Frontiers of Structural and Civil Engineering   Pages 1281-1294 doi: 10.1007/s11709-023-0975-9

Abstract: Changes in the concrete structure will result in changes in parameters such as the frequency mode andcurvature mode, which allows one to effectively locate and evaluate structural damages.Subsequently, various indices for the damage diagnosis of concrete structures based on the curvaturemode are introduced.The results show that the damage assessment model can accurately evaluate the damage degree of concrete

Keywords： hydraulic structure     curvature mode     damage detection     artifical neural network     artificial bee colony    

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A review on ductile mode cutting of brittle materials

Elijah Kwabena ANTWI, Kui LIU, Hao WANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 251-263 doi: 10.1007/s11465-018-0504-z

Abstract: But obtaining smooth and damage-free surface on brittle materials by traditional machining methods likeThus the study of ductile mode cutting of brittle materials has been attracting more and more effortsmolecular dynamic simulation, critical undeformed chip thickness, brittle-ductile transition, subsurface damage, as well as a detailed discussion of ductile mode cutting enhancement.and no subsurface damage are obtained simultaneously.

Keywords： ductile mode cutting     brittle materials     critical undeformed chip thickness     brittle-ductile transition     subsurface damage     molecular dynamic simulation    

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Damage mode and failure mechanism of starch based API gluelam bonding

Shi Junyou,Xu Wenbiao and Wang Shumin

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 40-44

Abstract: tensile shear strength as a key evaluation index，accelerated aging tests on gluelam bonding to study damagemode and failure mechanism of the bonding The results show that：the adhesive fracture properties ofductile fracture structure，and with the increase of aging time，the damage mode of the bonding transformsform cohesion damage mode to the integrated mode of cohesion damage and interface damage.

Keywords： bonding structure     accelerated aging     fracture character     damage mode    

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A combination of damage locating vector method (DLV) and differential evolution algorithm (DE) for structuraldamage assessment

T. NGUYEN-THOI, A. TRAN-VIET, N. NGUYEN-MINH, T. VO-DUY, V. HO-HUU

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 92-108 doi: 10.1007/s11709-016-0379-1

Abstract: In this study, a two-stage method is presented for identifying multiple damage scenarios.In the first stage, the damage locating vector (DLV) method using normalized cumulative energy ( ) isemployed for damage localization in structures.The numerical results show that the proposed combination gives good assessment of damage location andextent for multiple structural damage cases.

Keywords： damage assessment     damage locating vector method (DLV)     differential evolution (DE)     multiple damage locationassurance criterion (MDLAC)     mode shape error function    

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Windborne debris damage prediction analysis

Fangfang SONG, Jinping OU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 326-330 doi: 10.1007/s11709-010-0067-5

Abstract: Windborne debris is one of the most important causes of the envelop destruction according to the post-damageThe problem of windborne debris damage could be summarized as three parts, including windborne debrisBesides, the process of windborne debris damage analysis is described in detail.

Keywords： typhoon     windborne debris     structural envelopes     damage estimation    

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Corrosion damage assessment and monitoring of large steel space structures

Bo CHEN, You-Lin XU, Weilian QU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 354-369 doi: 10.1007/s11709-010-0088-0

Abstract: This paper proposes a framework for assessing the corrosion damage of large steel space structures subjectedreal large steel space structure built in the southern coastal area in China to assess its corrosion damage

Keywords： large steel space structure     atmospheric corrosion     stress corrosion cracking     corrosion damage     damage assessment    

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Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 318-332 doi: 10.1007/s11709-021-0715-y

Abstract: The aim of this study is to propose a new detection method for determining the damage locations in pileFirst, the damage location is simulated using a back propagation neural network deep learning model withIn particular, the damage location is identified using two parameters: the pile location ( ) and theSecond, the damage step condition is determined using a classification model with an acoustic emissionFinally, a new damage detection and evaluation method for pile foundations is proposed.

Keywords： pile foundations     damage location     acoustic emission     deep learning     damage step    

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Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0702-6

Abstract: The creep life of an aeroengine recuperator is investigated in terms of continuum damage mechanics by

Keywords： creep     life assessment     brazed joint     continuum damage mechanics     aeroengine recuperator    

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Bacterial inactivation, DNA damage, and faster ATP degradation induced by ultraviolet disinfection

Chao Yang, Wenjun Sun, Xiuwei Ao

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1192-6

Abstract: • Long amplicon is more effective to test DNA damage induced by UV. • ATP in bacteria does not degradeWe used quantitative polymerase chain reaction (qPCR) to investigate DNA damage and evaluated adenosineThe results of qPCR effectively showed the DNA damage induced by UV when using longer gene amplicons,

Keywords： UV disinfection     DNA damage     qPCR     ATP    

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The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 316-328 doi: 10.1007/s11709-022-0810-8

Abstract: To study the damage evolution behavior of polypropylene fiber reinforced concrete (PFRC) subjected toeffect of sulfate attack relative to time and fiber hybridization were analyzed and the compression damageThe initial damage factor of hybrid PFRC was −0.042 and −0.056 respectively after 150 d of corrosion,

Keywords： polypropylene fiber reinforced concrete     sulfate attack     damage evolution behavior     acoustic emission     damage factor    

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Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 458-464 doi: 10.1007/s11709-011-0133-7

Abstract: paper presents a numerical simulation study on electromechanical impedance technique for structural damageThe basic principle of impedance based damage detection is structural impedance will vary with the occurrenceand development of structural damage, which can be measured from electromechanical admittance curvesTherefore, structure damage can be identified from the electromechanical admittance measurements.In this study, a model based method that can identify both location and severity of structural damage

Keywords： PZT     piezoelectric impedance     optimization     spectral element     damage identification    

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Damage detection in beam-like structures using static shear energy redistribution

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1552-1564 doi: 10.1007/s11709-022-0903-4

Abstract: In this study, a static shear energy algorithm is presented for the damage assessment of beam-like structuresthe energy release principle, the strain energy of a damaged element suddenly changes when structural damageTherefore, the change in the static shear energy is employed to determine the damage locations in beam-likeis that only a few deflection data points of the beam structure are required during the process of damageAnother advantage of the proposed approach is that damage detection can be performed without establishing

Keywords： damage detection     beam structure     strain energy     static displacement variation     energy damage index    

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Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 348-357 doi: 10.1007/s11709-012-0176-4

Abstract: The objective of the present study is to analytically investigate temperature effects of an axial-type seismic damper made of shape memory alloys (SMAs) equipped in steel frames. Based on a modified multilinear one dimensional constitutive model of SMAs, two types of SMAs are employed, which have different stress plateau and different stress growth rate with temperature increase. Temperature effects of SMA dampers on seismic performance upgrading are discussed in three aspects: different environment temperatures; rapid loading rate induced heat generation and different SMA fractions. The analysis indicates that the effect of environment temperature should be considered for the SMA damper in steel frames. However, the rapid loading rate induced heat generation has little adverse effect.

Keywords： damage control design     shape memory alloy     temperature effect    

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Numerical simulation of damage in high arch dam due to earthquake

Hong ZHONG , Gao LIN , Hongjun LI

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 316-322 doi: 10.1007/s11709-009-0039-9

Abstract: Based on the assumption that concrete is macroscopic homogeneous, the cracking evolution process and damagemode of high arch dams are studied in consideration of the heterogeneity of concrete in mesoscale.The bilinear damage evolution model and the damage evolution model expressed in power function with descendingadopted to combine with the Mohr-Coulomb criterion to investigate the crack development and fracture mode

Keywords： mesoscopic heterogeneity     damage simulation in earthquakes     arch dam    

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Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 781-792 doi: 10.1007/s11709-021-0733-9

Abstract: During the construction of lightweight cellular concrete (LCC), material damage frequently occurs, causingThe construction-induced damage can be more significant than those from the service environment of LCCmethod established to simulate the damage in the laboratory setting.The damage evolution is provided with the rationality of the damage equation, verified by comparing themeasured and predicted damage variables.

Keywords： lightweight cellular concrete     construction-induced damage     freeze-thaw action     microstructure     degradation    

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Title Author Date Type Operation

Damage assessment and diagnosis of hydraulic concrete structures using optimization-based machine learning

Journal Article

A review on ductile mode cutting of brittle materials

Elijah Kwabena ANTWI, Kui LIU, Hao WANG

Journal Article

Damage mode and failure mechanism of starch based API gluelam bonding

Shi Junyou,Xu Wenbiao and Wang Shumin

Journal Article

A combination of damage locating vector method (DLV) and differential evolution algorithm (DE) for structuraldamage assessment

T. NGUYEN-THOI, A. TRAN-VIET, N. NGUYEN-MINH, T. VO-DUY, V. HO-HUU

Journal Article

Windborne debris damage prediction analysis

Fangfang SONG, Jinping OU,

Journal Article

Corrosion damage assessment and monitoring of large steel space structures

Bo CHEN, You-Lin XU, Weilian QU,

Journal Article

Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Journal Article

Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Journal Article

Bacterial inactivation, DNA damage, and faster ATP degradation induced by ultraviolet disinfection

Chao Yang, Wenjun Sun, Xiuwei Ao

Journal Article

The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Journal Article

Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Journal Article

Damage detection in beam-like structures using static shear energy redistribution

Journal Article

Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Journal Article

Numerical simulation of damage in high arch dam due to earthquake

Hong ZHONG , Gao LIN , Hongjun LI

Journal Article

Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Journal Article