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Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 380-391 doi: 10.1007/s11465-015-0365-7
The interface wave traveling along the boundary of two materials has been studied for nearly a century. However, experiments, engineering applications, and interface wave applications to the non-destructive inspection of interlaminar composite have developed slowly. In this research, an experiment that applies Stoneley waves (a type of interfacial wave between two solid half-spaces) is implemented to detect the damage in a multilayer structure. The feasibility of this method is also verified. First, the wave velocity and wave structure of Stoneley waves at a perfectly bonded aluminum-steel interface are obtained by solving the Stoneley wave dispersion equation of two elastic half-spaces. Thereafter, an experiment is conducted to measure the Stoneley wave velocity of an aluminum-steel laminated beam and to locate interlaminar cracks by referring to the Stoneley wave velocity and echo wave time. Results indicate that the location error is less than 2%. Therefore, Stoneley waves show great potential as a non-destructive inspection method of a multilayer structure.
关键词: crack localization interface waves Stoneley waves interlaminar damage multilayer structure
Robotized machining of big work pieces: Localization of supporting heads
Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 357-369 doi: 10.1007/s11465-010-0103-0
A. SHAFIEI
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 527-535 doi: 10.1007/s11709-018-0450-1
关键词: peridynamics inclined crack dynamic fracture crack branching
Optimal localization of complex surfaces in CAD-based inspection
XU Jinting, LIU Weijun, SUN Yuwen
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 426-433 doi: 10.1007/s11465-008-0068-4
关键词: deviation comparison non-linear localization inspection
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
《结构与土木工程前沿(英文)》 2010年 第4卷 第2期 页码 208-222 doi: 10.1007/s11709-010-0025-2
关键词: idealized sand strain localization numerical analyses distinct element method (DEM)
Peridynamics versus XFEM: a comparative study for quasi-static crack problems
Jinhai ZHAO, Hesheng TANG, Songtao XUE
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 548-557 doi: 10.1007/s11709-017-0434-6
关键词: XFEM peridynamic bilateral crack parallel double cracks nonlocal theory
Correlation between tension softening relation and crack extension resistance in concrete
Xiufang ZHANG , Shilang XU ,
《结构与土木工程前沿(英文)》 2009年 第3卷 第3期 页码 323-329 doi: 10.1007/s11709-009-0041-2
关键词: concrete fracture process zone crack extension GR resistance tension softening curve
Fracture resistance on aggregate bridging crack in concrete
ZHANG Xiufang, XU Shilang
《结构与土木工程前沿(英文)》 2007年 第1卷 第1期 页码 63-70 doi: 10.1007/s11709-007-0006-2
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
《机械工程前沿(英文)》 2011年 第6卷 第2期 页码 203-213 doi: 10.1007/s11465-011-0131-4
Crack on a shaft is one of the common damages in a rotor system. In this paper, transverse vibrations are calculated to compare the influences of transverse crack and slant crack on the rotor system. Results show that the vibration amplitude of the rotor system with a 45° slant crack on the shaft is larger than that with a transverse crack when the two types of crack have the same depth and the rotor system runs in the same condition. Stability and dynamic characteristics of the rotor system with a 45° slant crack on the shaft under torsional excitation are analyzed by considering opening and closing of the crack. It is shown that the instability of the transverse vibration of the rotor system increases with increasing difference between the bending stiffness in two main directions, and the vibration is stable when the two bending stiffness are identical. The spectrum analysis of the steady-state response reveals that the gravity and the eccentricity produce different frequency components, and when the two bending stiffness are identical, the multiple frequency components of the torsional excitation disappear. Further investigation shows that the vibration amplitudes in combined frequencies increase rapidly in transversal, torsional, and axial vibration with increasing slant crack depth. The results are helpful for the understanding the dynamic behavior of a rotor system with a slant crack on a shaft and can be used for the detection of the slant crack on a shaft.
关键词: rotor dynamics slant crack stability torsional excitation open and close
Study on the cohesion and adhesion of hot-poured crack sealants
Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV
《结构与土木工程前沿(英文)》 2017年 第11卷 第3期 页码 353-359 doi: 10.1007/s11709-017-0400-3
关键词: crack sealant concrete pavement cohesion adhesion moisture damage
Mahdi AREZOUMANDI
《结构与土木工程前沿(英文)》 2015年 第9卷 第1期 页码 91-103 doi: 10.1007/s11709-015-0274-1
关键词: bridge deck crack fiber shrinkage shrinkage reducing admixture
Concurrent fatigue crack growth simulation using extended finite element method
Zizi LU, Yongming LIU,
《结构与土木工程前沿(英文)》 2010年 第4卷 第3期 页码 339-347 doi: 10.1007/s11709-010-0078-2
关键词: small time scale model extended finite element method (X-FEM) crack growth multiaxial
Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI
《机械工程前沿(英文)》 2015年 第10卷 第3期 页码 255-262 doi: 10.1007/s11465-015-0342-1
The well-known fatigue crack growth (FCG) curves are two-parameter dependents. The range of the stress intensity factor ?K and the load ratio R are the parameters normally used for describing these curves. For engineering purposes, the mathematical representation of these curves should be integrated between the initial and final crack sizes in order to obtain the safety factors for stresses and life. First of all, it is necessary to reduce the dependence of the FCG curves to only one parameter. ?K is almost always selected and, in these conditions, considered as the crack driving force. Using experimental data from literature, the present paper shows how to perform multiple regression analyses using the traditional Walker approach and the more recent unified approach. The correlations so obtained are graphically analyzed in three dimensions. Numerical examples of crack growth analysis for cracks growing under nominal stresses of constant amplitude in smooth and notched geometries are performed, assuming an identical material component as that of the available experimental data. The resulting curves of crack size versus number of cycles (a vs. N) are then compared. The two models give approximately the same (a vs. N) curves in both geometries. Differences between the behaviors of the (avs. N) curves in smooth and notched geometries are highlighted, and the reasons for these particular behaviors are discussed.
关键词: fatigue crack propagation modeling life prediction mean stress effects
Stress field near circular-arc interface crack tip based on electric saturation concept
Longchao DAI, Xinwei WANG
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 320-325 doi: 10.1007/s11465-009-0042-9
关键词: piezoelectric material arc crack strip saturation stress intensity factor
Crack propagation with different radius local random damage based on peridynamic theory
《结构与土木工程前沿(英文)》 2021年 第15卷 第5期 页码 1238-1248 doi: 10.1007/s11709-021-0695-y
标题 作者 时间 类型 操作
Experimental verification of the interface wave method to detect interlaminar damage of a metal multilayer structure
Bing LI,Xu GENG,Tong LU,Lei QIANG,Minghang LI
期刊论文
Robotized machining of big work pieces: Localization of supporting heads
Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK
期刊论文
Dynamic crack propagation in plates weakened by inclined cracks: an investigation based on peridynamics
A. SHAFIEI
期刊论文
Optimal localization of complex surfaces in CAD-based inspection
XU Jinting, LIU Weijun, SUN Yuwen
期刊论文
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
期刊论文
Peridynamics versus XFEM: a comparative study for quasi-static crack problems
Jinhai ZHAO, Hesheng TANG, Songtao XUE
期刊论文
Correlation between tension softening relation and crack extension resistance in concrete
Xiufang ZHANG , Shilang XU ,
期刊论文
Stability and dynamics of rotor system with 45° slant crack on shaft
Yanli LIN, Xiaohui SI, Fulei CHU
期刊论文
Study on the cohesion and adhesion of hot-poured crack sealants
Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV
期刊论文
Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state
Mahdi AREZOUMANDI
期刊论文
Concurrent fatigue crack growth simulation using extended finite element method
Zizi LU, Yongming LIU,
期刊论文
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
期刊论文
Stress field near circular-arc interface crack tip based on electric saturation concept
Longchao DAI, Xinwei WANG
期刊论文