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Recent development in low-constraint fracture toughness testing for structural integrity assessment of pipelines

Jidong KANG, James A. GIANETTO, William R. TYSON

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 546-553 doi: 10.1007/s11465-018-0501-2

Abstract: Traditionally, a single-edge-notched bend (SE(B)) specimen with a deep crack is recommended in many existingSuch a test provides high constraint and therefore conservative fracture toughness results.review, we present recent developments in low-constraint fracture toughness testing, specifically using single-edge-notchedtension specimens, SENT or SE(T).We focus our review on the test procedure development and automation, round-robin test results and some

Keywords： fracture toughness     constraint effect     single-edge-notched tension test     pipeline     structural integrity assessment    

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Identify the contribution of vehicle non-exhaust emissions: a single particle aerosol mass spectrometertest case at typical road environment

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 5, doi: 10.1007/s11783-023-1662-8

Abstract:

● A single particle observation was conducted in a high traffic flow

Keywords： Non-exhaust emissions     SPAMS     PMF     Roadside environment    

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Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 224-237 doi: 10.1007/s11709-022-0914-1

Abstract: The horizontal bearing behavior of a single batter pile (SBP) is vital to its application in practicalto be effective, as confirmed by the close agreement between the predicting results with the model test(reported in this study) and centrifuge model test results (reported in the literature).

Keywords： single batter pile     skew horizontal load     model test     finite-element analysis     empirical design method    

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: this study, gradual and sudden reduction methods were combined to simulate a progressive failure in notchedpredict the first ply failure (FPF), LPF, and dominant failure modes of carbon/epoxy and glass/epoxy notchedthe effects of mechanical properties and different stacking sequences on the propagation of damage in notchedexperimental data, it is revealed that the proposed method can accurately simulate the failure propagation in notched

Keywords： progressive failure     notched composite plate     Hashin failure criterion     macro mechanics approach     finite    

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Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 323-328 doi: 10.1007/s11709-008-0043-5

Abstract: Specimens subjected to biaxial compression-tension (C-T) and triaxial compression-compression-tensionTest data indicate that both the deformation and strength of the mass concrete specimens are lower thanTest results show that the wet-screened effect and size effect of the specimens under complex stress

Keywords： requirement     wet-screened concrete     compression-tension     maximum aggregate     principal    

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A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 305-311 doi: 10.1007/s11709-009-0040-3

Abstract: A new triaxial testing system that could control suction in wetting-induced collapsible tests was successfully developed to study the suction effects on wetting-induced collapsible deformation. The pedestal of the triaxial cell was made up of two parts, and the equipment not only could control suction but also could make water accessible to soil. A pressure/volume-controlled equipment was combined with the triaxial system to measure the water volume absorbed by samples accurately and to add pressure on water to filtrate into the sample. The apparatus could measure volume change precisely and keep the deviator stress unvaried, as well as measure the volume of water filtrating into the samples exactly. A triaxial collapsible testing procedure was described using the new apparatus for undisturbed collapsible loess with controlled suction. Furthermore, a series of double triaxial collapsible tests were conducted under different suctions and the same net cell pressure, and tests under different net cell pressures and the same suction were also done. It was indicated that the collapsible deformation increased with the increasing suction, and the effect of the net cell pressure on collapsible deformation was remarkable. The new triaxial apparatus was a useful facility to study the collapsible behavior of loess.

Keywords： collapsible soils     controlled suction     pressure/volume controlled equipment     double triaxial collapsible test     single triaxial collapsible test    

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: A uniaxial tension test is commonly used to determine the mechanical properties of steel, but it hasThe test was developed as a consensus solution by producers, fabricators, designers and code writers,

Keywords： steel     stress-strain characteristics     tension test     strain design     actual behavior     improved design codes    

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Evaluation of regenerative braking based on single-pedal control for electric vehicles

Wei LIU, Xintian LIU, Yansong WANG, Hongzhong QI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 166-179 doi: 10.1007/s11465-019-0546-x

Abstract: A single-pedal control strategy for regenerative braking is proposed to further enhance energy efficiencyAcceleration and deceleration are controlled by a single pedal, which alleviates driving intensity andRegenerative braking is theoretically analyzed based on the construction of the single-pedal system,The single-pedal control strategy is developed by considering daily driving conditions, and a single-pedalA dynamometer test is conducted to confirm the validity of the simulation model.

Keywords： electric vehicle     single-pedal control     regenerative braking     co-simulation     dynamometer test    

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Seismic stability of earth slopes with tension crack

Yundong ZHOU, Fei ZHANG, Jingquan Wang, Yufeng GAO, Guangyu DAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 950-964 doi: 10.1007/s11709-019-0529-3

Abstract: Such cracks result from limited tension strength of the soil.A tension cut-off in Mohr-Coulomb shear strength can represent this limited strength.Presented is an extension of variational analysis of slope stability with a tension crack consideringThe results indicate that the presence of the tension crack has significant effects on the seismic stabilityConsidering soil tension strength in seismic slope analysis may lead to overestimation on the stability

Keywords： slope stability     tension     crack     limit equilibrium     seismic effect    

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Release of elements from municipal solid waste incineration fly ash

Wei WANG, Lei ZHENG, Feng WANG, Xiao WAN, Keqing YIN, Xingbao GAO

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 482-489 doi: 10.1007/s11783-010-0245-7

Abstract: element-release behavior of municipal solid waste incineration fly ash was explored through leaching testwith continuous set-point pH (pH test) and serial single reaction cell (SSRC) tests.relationship between element release and acid neutralizing capacity (ANC) consumption was examined with a pH testCombining the results from the SSRC test with the kinetic analysis of the ANC system in the pH test,

Keywords： pHstat test     Serial single reaction cell test (SSRC)     leaching     heavy metal    

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Surface tension of liquid metal: role, mechanism and application

Xi ZHAO, Shuo XU, Jing LIU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 535-567 doi: 10.1007/s11708-017-0463-9

Abstract: Surface tension plays a core role in dominating various surface and interface phenomena.For liquid metals with high melting temperature, a profound understanding of the behaviors of surface tensionIn order to promote the research of surface tension of RTLM, this paper is dedicated to present an overviewon the roles and mechanisms of surface tension of liquid metal and summarize the latest progresses onMoreover, the unique phenomena of RTLM surface tension issues such as surface tension driven self-actuation

Keywords： surface tension     liquid metal     soft machine     printed electronics     electrowetting     self-actuation    

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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: points of the crack extension resistance curve is closely related to the characteristic point on used tension

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

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Edge preparation methods for cutting tools: a review

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0766-y

Abstract: Edge preparation can remove cutting edge defects, such as burrs, chippings, and grinding marks, generatedVarious edge preparation methods have been proposed for different tool matrix materials, geometries,cutting edge with cutting performance, are briefly introduced.Then, edge preparation methods for cutting tools, in which materials at the cutting edge area are removedFinally, the future development direction of tool edge preparation technology is prospected.

Keywords： edge preparation method     preparation principle     cutting edge geometry     edge characterization     tool performance    

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Temperature and structural responses of a single-section utility tunnel throughout fire exposure

Yanmin YANG; Ying XIONG; Yongqing LI; Xiangkun MENG; Peng WANG; Tianyuan CAI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1351-1364 doi: 10.1007/s11709-022-0857-6

Abstract: In this study, fire tests of four single-section scaled-down utility tunnels were conducted.

Keywords： full lightweight concrete     construction methods     temperature response     structural response     fire test    

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Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 241-248 doi: 10.1007/s11465-011-0219-x

Abstract: new calculation method that can calculate the load distribution on pipe threaded connections under tensionThe model offers a new way to calculate the loads carried on the thread teeth under tension load.

Keywords： load distribution     calculation method     pipe threaded connections     tension load    

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Title Author Date Type Operation

Recent development in low-constraint fracture toughness testing for structural integrity assessment of pipelines

Jidong KANG, James A. GIANETTO, William R. TYSON

Journal Article

Identify the contribution of vehicle non-exhaust emissions: a single particle aerosol mass spectrometertest case at typical road environment

Journal Article

Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Journal Article

Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Journal Article

Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Journal Article

A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Journal Article

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Journal Article

Evaluation of regenerative braking based on single-pedal control for electric vehicles

Wei LIU, Xintian LIU, Yansong WANG, Hongzhong QI

Journal Article

Seismic stability of earth slopes with tension crack

Yundong ZHOU, Fei ZHANG, Jingquan Wang, Yufeng GAO, Guangyu DAI

Journal Article

Release of elements from municipal solid waste incineration fly ash

Wei WANG, Lei ZHENG, Feng WANG, Xiao WAN, Keqing YIN, Xingbao GAO

Journal Article

Surface tension of liquid metal: role, mechanism and application

Xi ZHAO, Shuo XU, Jing LIU

Journal Article

Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Journal Article

Edge preparation methods for cutting tools: a review

Journal Article

Temperature and structural responses of a single-section utility tunnel throughout fire exposure

Yanmin YANG; Ying XIONG; Yongqing LI; Xiangkun MENG; Peng WANG; Tianyuan CAI

Journal Article

Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Journal Article