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

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.to obtain the curvature modes based on the strain and displacement modes is proposed.Subsequently, various indices for the damage diagnosis of concrete structures based on the curvaturemode are introduced.

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

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Moment-curvature relationship of FRP-concrete-steel double-skin tubular members

Mingxue LIU, Jiaru QIAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 25-31 doi: 10.1007/s11709-009-0012-7

Abstract: The strip method was used to calculate the section moment-curvature curves of the 3 specimens and 12analysis resulted in a simplified formula for the flexural strength of DSTMs and a tri-linear moment-curvature

Keywords： fiber reinforced polymer (FRP)     concrete     steel     double-skin tubular members (DSTMs)     moment-curvature curve    

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Soft curvature sensors for measuring the rotational angles of mechanical fingers

Haixiao LIU, Li LI, Zhikang OUYANG, Wei SUN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 610-621 doi: 10.1007/s11465-020-0596-0

Abstract: The design, fabrication, and testing of soft sensors that measure elastomer curvature and mechanicalSecond, the relationship between curvature and resistance is determined.Experiments show that the sensors exhibit high accuracy when the curvature changes within a certain rangeExperiments show that soft curvature sensors can effectively reflect mechanical finger bending and can

Keywords： soft sensor     Ga-In-Sn alloy     strain sensing     curvature sensing     mechanical finger bending    

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The Application of Moving Frame in the Calculation of Spiral Bevel Gear’s Principal Curvature

Wang Yuqing,Liang Jian

Strategic Study of CAE 2001, Volume 3, Issue 12,   Pages 68-70

Abstract:

the calculation of contacted points´ principal curvature is the key to determine contacted areaTraditionally, the method of determining principal curvature is to make use of the theory of mesh andmoving frame and co-differential are employed to give a sententious, effective algorithm of principal curvatureThis algorithm can be used for calculation of principal curvature in all kinds of curve surfaces.

Keywords： spiral bevel gear     principal curvature     moving frame    

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Seismic curvature attributes and their application to seismic interpretation

Bai Guanjun,Zhao Rumin,Yang Songling, Li Peipei

Strategic Study of CAE 2011, Volume 13, Issue 5,   Pages 23-27

Abstract:

Based on the theory of seismic curvature attributes, this paper analyzedfeatures of seismic curvature attributes and found out effective seismic curvature attributes to interpretSuming up the application of the eismic curvature attributes and the notable problems during the processof application,2D curvature attributes explicit physical meanings and obvious advantages in identificationThe applications show that it is effective and convenient to interpret faults using seismic curvature

Keywords： seismic curvature     fault interpretation     sedimentary bodies interpretation     3D interpreted horizon    

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Effects of fiber curvature on the microstructure of the interfacial transition zone in fresh concrete

CHEN Huisu, SUN Wei, ZHAO Qingxin, L. J. Sluys, P. Stroeven

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 99-106 doi: 10.1007/s11709-007-0010-6

Abstract: However, no information is available on the influence of the curvature of a rigid surface on the microstructureThis paper employed computer simulation technology to study the influence of fiber curvature on the initialspherical particles system is mono-size or multi-size, the fresh ITZ s microstructure is irrelevant to the curvature

Keywords： diameter     initial microstructure     influence     surface     spherical particle    

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Extracting hand articulations from monocular depth images using curvature scale space descriptors

Shao-fan WANG,Chun LI,De-hui KONG,Bao-cai YIN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 1,   Pages 41-54 doi: 10.1631/FITEE.1500126

Abstract:

We propose a framework of hand articulation detection from a monocular depth image using curvature

Keywords： Curvature scale space (CSS)     Hand articulation     Convex hull     Hand contour    

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 836-849 doi: 10.1007/s11708-017-0444-z

Abstract: It describes a coupling of sliding mode direct torque control (DTC) with sliding mode flux and speedThis algorithm uses direct torque control basics and the sliding mode approach.The sliding mode controller is used to generate reference voltages in stationary frame and give themThe second aim of this paper is to design a sliding mode speed/flux observer which can improve the control

Keywords： induction motor     direct torque control (DTC)     space vector modulation (SVM)     sliding mode control (SMC)     sliding mode observer (SMO)     dS1104    

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Parallel Authentication Modes Based on Double Blocks or Key Counter

Huang Yuhua,Huai Aiqun,Song Yubo

Strategic Study of CAE 2004, Volume 6, Issue 7,   Pages 70-74

Abstract:

The CBC - MAC mode is not a parallel one.The PKCB mode had a marked improvement on security & speed over parallel authentication mode, PMACAnd it may be combined with the CTR (counter) encryption mode to form a full block cipher mode.block cipher mode (2CTR)，too.The 2CTR mode had a performance advantage over the standard mode, CCM (CTR with CBC - MAC).

Keywords： authentication mode     CBC - MAC mode     PMAC mode     CTR mode     CCM mode    

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Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Frontiers of Structural and Civil Engineering   Pages 179-190 doi: 10.1007/s11709-022-0888-z

Abstract: plate were considered Gaussian random fields and their effects on the buckling load and corresponding modespatially varying stochastic properties on the critical load of the plate and the irregularity of buckling modethe plate properties as random fields, a significant stochastic irregularity is obtained in buckling mode

Keywords： uncertain composite plate     stochastic assume mode method     Karhunen−Loève theorem     polynomial chaos approach     plate buckling     irregularity in buckling mode shapes    

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Experimental investigation of evolutive mode-I and mode-II fracture behavior of fiber-reinforced cemented

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 256-270 doi: 10.1007/s11709-022-0924-z

Abstract: temperature (20, 35, and 45 °C) and cement hydration at different curing times (3, 7, and 28 d) on the mode-Iand mode-II fracture behavior and properties of fiber-reinforced CPB is investigated.

Keywords： fiber reinforcement     cemented paste backfill     fracture behavior     underground mine     cement hydration    

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Waves of Probability and the Problems of Torsion for Quantum Effect

OuYang Shoucheng,Li Zhilan,Yuan Dongsheng

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 1-6

Abstract:

In this paper, the numerical experiment is conducted for Schrödinger's equivalent equation with third order derivative for nonlinear variable. The results show that the probability of probability waves is the quasi-regular flow under given condition, and it's a result of comprehensive interactions among intensity of potential field and particle density and torsion (spin) field with the quantum effect. The pure quantum effect is represented only by irregular flow.

Keywords： torsion (spin)     probability     quantum effect     nonlinear instability     curvature space    

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Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 294-300 doi: 10.1007/s11465-015-0351-0

Abstract: T) and curvature (?

Keywords： in-plane     Young’s modulus     curvature temperature     thermal stress     coating    

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An adaptive sliding mode control technology for weld seam tracking

Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 95-101 doi: 10.1007/s11465-015-0332-3

Abstract:

A novel adaptive sliding mode control algorithm is derived to deal with seam tracking control problemalgorithm enables better high-precision tracking performance with chattering-free than traditional sliding mode

Keywords： weld seam tracking     welding robotic manipulator     adaptive control     sliding mode control    

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Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: In this study, the bidimensional empirical mode decomposition (BEMD) method is used to identify such

Keywords： bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

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Title Author Date Type Operation

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

Journal Article

Moment-curvature relationship of FRP-concrete-steel double-skin tubular members

Mingxue LIU, Jiaru QIAN

Journal Article

Soft curvature sensors for measuring the rotational angles of mechanical fingers

Haixiao LIU, Li LI, Zhikang OUYANG, Wei SUN

Journal Article

The Application of Moving Frame in the Calculation of Spiral Bevel Gear’s Principal Curvature

Wang Yuqing,Liang Jian

Journal Article

Seismic curvature attributes and their application to seismic interpretation

Bai Guanjun,Zhao Rumin,Yang Songling, Li Peipei

Journal Article

Effects of fiber curvature on the microstructure of the interfacial transition zone in fresh concrete

CHEN Huisu, SUN Wei, ZHAO Qingxin, L. J. Sluys, P. Stroeven

Journal Article

Extracting hand articulations from monocular depth images using curvature scale space descriptors

Shao-fan WANG,Chun LI,De-hui KONG,Bao-cai YIN

Journal Article

Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Journal Article

Parallel Authentication Modes Based on Double Blocks or Key Counter

Huang Yuhua,Huai Aiqun,Song Yubo

Journal Article

Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Journal Article

Experimental investigation of evolutive mode-I and mode-II fracture behavior of fiber-reinforced cemented

Journal Article

Waves of Probability and the Problems of Torsion for Quantum Effect

OuYang Shoucheng,Li Zhilan,Yuan Dongsheng

Journal Article

Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Journal Article

An adaptive sliding mode control technology for weld seam tracking

Jie LIU,Youmin HU,Bo WU,Kaibo ZHOU,Mingfeng GE

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article