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Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 224-227 doi: 10.1007/s11465-009-0017-x

Abstract: An algorithm is presented for detecting transverse corner cracks at a steel plate surface using waveletThe experiment shows that transverse corner cracks of steel plates can be more effectively extracted

Keywords： transverse corner cracks     defect detection     multi-scales wavelet analysis    

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Microbial self-healing of cracks in cement-based materials and its influencing factors

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0986-6

Abstract: Cracks can reduce service life because the transport of harmful substances can cause corrosion damagemethod, numerical modeling, and ultrasonic method can be employed to identify the self-healing effect of cracksThe results showed that microbial self-healing agents can repair cracks in cement-based materials inThe difficulties and future development of self-healing cracks were analyzed.With the development of intelligent building materials, self-healing cracks have become the focus of

Keywords： cement-based materials     cracks     microbial self-healing agent     mechanism     intelligent building materials    

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Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 359-382 doi: 10.1007/s11709-015-0304-z

Abstract: This paper deals with the fatigue crack growth simulations of three-dimensional linear elastic cracksDifferent crack geometries such as planer, non-planer and arbitrary spline shape cracks are simulated

Keywords： 3-D cracks     fatigue life     Paris law     thermal load     XFEM    

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Investigation of Generalized SIFs of cracks in 3D piezoelectric media under various crack-face conditions

Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 280-298 doi: 10.1007/s11709-019-0586-7

Abstract: and the permittivity of a medium inside the crack gap on intensity factors of planar and non-planar cracksThe mode-I stress intensity factors ( ) for two representative non-planar cracks under different crack-faceIn addition, for impermeable and semi-permeable non-planar cracks treated depends strongly on the electricfield whereas those of impermeable, permeable, and semi-permeable penny-shaped cracks are identicaland dependent on the electric field for the penny-shaped crack and the two representative non-planar cracks

Keywords： crack-face conditions     intensity factors     non-flat cracks     permittivity     piezoelectric media     SGBEM    

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Fast detection algorithm for cracks on tunnel linings based on deep semantic segmentation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 732-744 doi: 10.1007/s11709-023-0965-y

Abstract: deep semantic segmentation called LC-DeepLab is proposed for detecting the trends and geometries of cracksThe experimental results show that LC-DeepLab can accurately segment and highlight cracks from tunnel

Keywords： tunnel engineering     crack segmentation     fast detection     DeepLabv3+     feature fusion     attention mechanism    

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Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 294-303 doi: 10.1007/s11709-011-0115-9

Abstract: This study investigates the ductile fracture resistance of 3-D external circumferential cracks in theaxi-symmetric model provides conservative estimations of the fracture resistance for 3-D circumferential cracks

Keywords： ductile fracture     computational cell method     G-T model     J-R curve    

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Effect of calcium lactate on compressive strength and self-healing of cracks in microbial concrete

Kunamineni VIJAY, Meena MURMU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 515-525 doi: 10.1007/s11709-018-0494-2

Abstract: The influence of this addition on compressive strength, self-healing capability of cracks is highlighted

Keywords： calcium lactate     bacillus subtilis     compressive strength     self-healing of cracks    

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Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 296-300 doi: 10.1007/s11465-011-0236-9

Abstract: Stroh-type formalism and the technique of conformal mapping, the problem of two non-symmetrical collinear cracksand anti-plane mechanical loading, which allowed us to take the electric field inside the hole and cracks

Keywords： piezoelectric materials     elliptical hole     semi-permeable crack     energy release rate     analytic solution    

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Detecting large-scale underwater cracks based on remote operated vehicle and graph convolutional neural

Wenxuan CAO; Junjie LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1378-1396 doi: 10.1007/s11709-022-0855-8

Abstract: It is of great significance to quickly detect underwater cracks as they can seriously threaten the safetyResearch to date has mainly focused on the detection of above-water-level cracks and hasn’t consideredthe large scale cracks.

Keywords： underwater cracks     remote operated vehicle     image stitching     image segmentation     graph convolutional    

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Initial life of corner fine cracks on the P60 rails

Shi Rong,Fan Zhiyi,He Yuelei

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 65-68

Abstract: Outer rails on curve railway have corner fine cracks on the inner flank, and some cracks evaluate downInitially corner fine cracks expand slowly on the early stage, with the times of fatigue loads increasingbreaks.The times of fatigue loads at turn over point is defined as the initial life of corner fine cracks

Keywords： rail     corner fine cracks     fatigue cracks     crack depth expanding speed     initial life    

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Dynamic crack propagation in plates weakened by inclined cracks: an investigation based on peridynamics

A. SHAFIEI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 527-535 doi: 10.1007/s11709-018-0450-1

Abstract: Peridynamics is a theory in solid mechanics that uses integral equations instead of partial differential equations as governing equations. It can be applied to fracture problems in contrast to the approach of fracture mechanics. In this paper by using peridynamics, the crack path for inclined crack under dynamic loading were investigated. The peridynamics solution for this problem represents the main features of dynamic crack propagation such as crack bifurcation. The problem is solved for various angles and different stress values. In addition, the influence of geometry on inclined crack growth is studied. The results are compared with molecular dynamic solutions that seem to show reasonable agreement in branching position and time.

Keywords： peridynamics     inclined crack     dynamic fracture     crack branching    

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Three Dimensional Finite Element Analysis of Cracks for Deep Mixing Wall

Gao Wenhua,Wang Xiangqiu,Chen Qiunan,Zhang Zhimin

Strategic Study of CAE 2005, Volume 7, Issue 12,   Pages 88-91

Abstract:

Aiming at the cracks of supporting structure of deep mixing wall, the elastoplastic behavior of internalThe calculation results indicate that the cracks of wall are mainly caused by strut´s loads of

Keywords： cracks     deep mixing wall     thick plate     equivalent bending moment     three dimensional finite element    

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Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the

WAN Zhen-ping, LIU Ya-jun, TANG Yong, YE Bang-yan

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 194-198 doi: 10.1007/s11465-005-0011-x

Abstract: facilitate tool design and cutting parameter selection, the initiation and propagation laws of glass cracks

Keywords： different     30o-120o     relationship     initiation     cutting parameter    

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Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 548-557 doi: 10.1007/s11709-017-0434-6

Abstract: The second example is the specimens with two center cracks.

Keywords： XFEM     peridynamic     bilateral crack     parallel double cracks     nonlocal theory    

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Structural health monitoring with fiber optic sensors

F. ANSARI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 103-110 doi: 10.1007/s11465-009-0032-y

Abstract: Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medical applications. Civil structures pose further challenges in monitoring mainly due to their large dimensions, diversity and heterogeneity of materials involved, and hostile construction environment. This article provides a summary of basic principles pertaining to practical health monitoring of civil engineering structures with optical fiber sensors. The issues discussed include basic sensor principles, strain transfer mechanism, sensor packaging, sensor placement in construction environment, and reliability and survivability of the sensors.

Keywords： Bridges     structural health monitoring     smart skins     cracks     strains     displacements     fiber optic sensors     FBG    

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Title Author Date Type Operation

Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Journal Article

Microbial self-healing of cracks in cement-based materials and its influencing factors

Journal Article

Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Journal Article

Investigation of Generalized SIFs of cracks in 3D piezoelectric media under various crack-face conditions

Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN

Journal Article

Fast detection algorithm for cracks on tunnel linings based on deep semantic segmentation

Journal Article

Ductile extension of 3-D external circumferential cracks in pipe structures

Wuchao YANG, Xudong QIAN

Journal Article

Effect of calcium lactate on compressive strength and self-healing of cracks in microbial concrete

Kunamineni VIJAY, Meena MURMU

Journal Article

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Journal Article

Detecting large-scale underwater cracks based on remote operated vehicle and graph convolutional neural

Wenxuan CAO; Junjie LI

Journal Article

Initial life of corner fine cracks on the P60 rails

Shi Rong,Fan Zhiyi,He Yuelei

Journal Article

Dynamic crack propagation in plates weakened by inclined cracks: an investigation based on peridynamics

A. SHAFIEI

Journal Article

Three Dimensional Finite Element Analysis of Cracks for Deep Mixing Wall

Gao Wenhua,Wang Xiangqiu,Chen Qiunan,Zhang Zhimin

Journal Article

Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the

WAN Zhen-ping, LIU Ya-jun, TANG Yong, YE Bang-yan

Journal Article

Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

Structural health monitoring with fiber optic sensors

F. ANSARI

Journal Article