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Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 167-174 doi: 10.1007/s11783-011-0308-4

Abstract: A thermal-crack method using residual steam as the heating medium has been developed to pre-treat wasteThe changes of the PWBs’ macro-mechanical properties were studied to evaluate thermal expansion impactsThe results showed that thermal cracking with steam at the temperature of 500 K can effectively attenuateThermal expansion can also facilitate the separation of copper from glass fiber by reducing peel resistance

Keywords： waste printed wiring board (PWB)     residue steam     thermal-crack     mechanical properties    

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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 cracksby XFEM under cyclic thermal load.Both temperature and displacement approximations are extrinsically enriched by Heaviside and crack frontare joined by cubic spline segments to obtain a modified crack front.under thermal shock, adiabatic and isothermal loads to reveal the sturdiness and versatility of the

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

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Molecular dynamics investigation of mechanical properties of single-layer phagraphene

Ali Hossein Nezhad SHIRAZI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 495-503 doi: 10.1007/s11709-018-0492-4

Abstract: two-dimensional (2D) full carbon allotrope with very interesting mechanical, electronic, optical, and thermalWe studied different crack lengths to explore the influence of defects on the mechanical properties of

Keywords： phaqraphene     mechanical properties     crack propaqation     molecular dynamics     thermal effects    

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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: In this paper by using peridynamics, the crack path for inclined crack under dynamic loading were investigatedThe peridynamics solution for this problem represents the main features of dynamic crack propagationsuch as crack bifurcation.In addition, the influence of geometry on inclined crack growth is studied.

Keywords： peridynamics     inclined crack     dynamic fracture     crack branching    

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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: However, capturing of complex mixed-mode crack patterns has been proven to be difficult with PD.extended finite element method (XFEM) is one of the most popular methods for fracture which allows crackThe first example is crack propagation in a double notched specimen under uniaxial tension with differentcrack spacings in loading direction.

Keywords： XFEM     peridynamic     bilateral crack     parallel double cracks     nonlocal theory    

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Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 323-329 doi: 10.1007/s11709-009-0041-2

Abstract: Changes of the material fracture energy consumption with crack propagation can be described by a crackextension resistance curve, one of the fundamental fracture criteria in crack mechanics.observation of the fracture behavior in concrete was used to develop a new fracture criterion, the crackextension resistance curve, to analyze crack propagation during the entire concrete fracture processfracture process zone ahead of the stress-free crack tip.

Keywords： concrete     fracture process zone     crack extension GR resistance     tension softening curve    

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Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 63-70 doi: 10.1007/s11709-007-0006-2

Abstract: Utilizing the obtained load against crack opening displacement curve, the value of G at any crack extensionas well as the change of G with the crack extension is examined.It is found that G will firstly increase with the development of crack and then stay constant once theinitial crack tip opening displacement reaches the characteristic crack opening displacement w0.The results reveal that the values of G of different specimens at any crack propagation are strongly
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Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 203-213 doi: 10.1007/s11465-011-0131-4

Abstract:

Crack on a shaft is one of the common damages in a rotor system.slant crack on the rotor system.is larger than that with a transverse crack when the two types of crack have the same depth and thetorsional excitation are analyzed by considering opening and closing of the crack.on a shaft and can be used for the detection of the slant crack on a shaft.

Keywords： rotor dynamics     slant crack     stability     torsional excitation     open and close    

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Study on the cohesion and adhesion of hot-poured crack sealants

Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 353-359 doi: 10.1007/s11709-017-0400-3

Abstract: Filling crack sealant is a main method to repair cracking of pavement.The cohesion and adhesion of crack sealant directly determine its service performance and durability.This research proposed two methods to evaluate cohesion and adhesion of crack sealant, and analyzed theThe effect of moisture on low-temperature performance of crack sealant was also be evaluated by conductingfor 24 hours will decrease the failure energy of low-temperature tension and damage the durability of crack

Keywords： crack sealant     concrete pavement     cohesion     adhesion     moisture damage    

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Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state

Mahdi AREZOUMANDI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 1,   Pages 91-103 doi: 10.1007/s11709-015-0274-1

Abstract: To design an appropriate mixture for crack free bridge deck, it is important to study previous researches

Keywords： bridge deck     crack     fiber     shrinkage     shrinkage reducing admixture    

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Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 339-347 doi: 10.1007/s11709-010-0078-2

Abstract: In this paper, a concurrent simulation framework for fatigue crack growth analysis is proposed usingscale model for fatigue mechanism analysis and the extended finite element method (X-FEM) for fatigue crackThe X-FEM greatly facilitates crack growth simulation without remeshing requirements ahead of the cracktime scale fatigue model is integrated into the numerical simulation algorithm for concurrent fatigue crack

Keywords： small time scale model     extended finite element method (X-FEM)     crack growth     multiaxial    

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Some remarks on the engineering application of the fatigue crack growth approach under nonzero mean loads

Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 255-262 doi: 10.1007/s11465-015-0342-1

Abstract:

The well-known fatigue crack growth (FCG) curves are two-parameter dependents.the mathematical representation of these curves should be integrated between the initial and final crackK is almost always selected and, in these conditions, considered as the crack driving forceNumerical examples of crack growth analysis for cracks growing under nominal stresses of constant amplitudeThe resulting curves of crack size versus number of cycles (a vs.

Keywords： fatigue crack propagation modeling     life prediction     mean stress effects    

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Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 320-325 doi: 10.1007/s11465-009-0042-9

Abstract: the framework of nonlinear electroelasticity, the anti-plane problem of a circular-arc interfacial crackthe complex potentials in both the matrix and the inclusion, and the stress intensity factor at the crack

Keywords： piezoelectric material     arc crack     strip saturation     stress intensity factor    

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Crack propagation with different radius local random damage based on peridynamic theory

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1238-1248 doi: 10.1007/s11709-021-0695-y

Abstract: Drawing from the advantages of Classical Mechanics, the peridynamic theory can clarify the crack propagationmechanism by an integral solution without initially setting the factitious crack and crack path.Moreover, to study the effects of local stochastic damage with different radii on the crack propagationand Y-direction displacement, a comparison and contact methodology was adopted, in which the crack

Keywords： peridynamics     stochastic damage     bilateral notch crack    

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Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Strategic Study of CAE 2002, Volume 4, Issue 5,   Pages 53-58

Abstract: Based upon concrete fracture properties and the analytical model of crack with cohesive forces, two simpleAs a result, using the test data of crack opening displacement, the cohesive stress distribution is determined

Keywords： concrete     crack opening displacement     fictitious crack cohesive force     algebra equations    

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Title Author Date Type Operation

Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

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

Molecular dynamics investigation of mechanical properties of single-layer phagraphene

Ali Hossein Nezhad SHIRAZI

Journal Article

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

A. SHAFIEI

Journal Article

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

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Journal Article

Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Journal Article

Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Journal Article

Study on the cohesion and adhesion of hot-poured crack sealants

Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV

Journal Article

Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state

Mahdi AREZOUMANDI

Journal Article

Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

Journal Article

Some remarks on the engineering application of the fatigue crack growth approach under nonzero mean loads

Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI

Journal Article

Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Journal Article

Crack propagation with different radius local random damage based on peridynamic theory

Journal Article

Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Journal Article