The Experts below are selected from a list of 11877 Experts worldwide ranked by ideXlab platform
S. A. Kholmogorov - One of the best experts on this subject based on the ideXlab platform.
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Physical-Mechanical Properties of a Fiber-Reinforced Composite Based on an ELUR-P Carbon Tape and XT-118 Binder
Mechanics of Composite Materials, 2018Co-Authors: V. N. Paimushin, S. A. KholmogorovAbstract:A series of tests to identify the physical-mechanical properties of a unidirectional carbon-fiber-reinforced composite based on an ELUR-P carbon fibers and an XT-118 epoxy binder were performed. The form of the stress–strain Diagrams of specimens loaded in tension in the longitudinal, transverse, and ±45° directions and in compression in the longitudinal and ±45° directions were examined. Tensile Diagrams were also determined for the XT-118 binder alone. The relation between the tangential shear modulus and shear strains of the composite was highly nonlinear from the very beginning of loading and depended on the loading type. Such a nonlinear response of the carbon-fiber-reinforced composite in shear cannot be the result of plastic deformation of binder, but can be explained only by structural changes caused by the inner buckling instability of the composite at micro- and mesolevels..
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Physical-Mechanical Properties of a Fiber-Reinforced Composite Based on an ELUR-P Carbon Tape and XT-118 Binder
Mechanics of Composite Materials, 2018Co-Authors: V. N. Paimushin, S. A. KholmogorovAbstract:A series of tests to identify the physical-mechanical properties of a unidirectional carbon-fiber-reinforced composite based on an ELUR-P carbon fibers and an XT-118 epoxy binder were performed. The form of the stress–strain Diagrams of specimens loaded in tension in the longitudinal, transverse, and ±45° directions and in compression in the longitudinal and ±45° directions were examined. Tensile Diagrams were also determined for the XT-118 binder alone. The relation between the tangential shear modulus and shear strains of the composite was highly nonlinear from the very beginning of loading and depended on the loading type. Such a nonlinear response of the carbon-fiber-reinforced composite in shear cannot be the result of plastic deformation of binder, but can be explained only by structural changes caused by the inner buckling instability of the composite at micro- and mesolevels..
S. Yu. Mitropol’skaya - One of the best experts on this subject based on the ideXlab platform.
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Determining the stress state of a stretched rod from its measured magnetic characteristics
Journal of Applied Mechanics and Technical Physics, 2008Co-Authors: E. S. Gorkunov, I. G. Emel’yanov, S. Yu. Mitropol’skayaAbstract:Stress-Strain Diagrams and coercive force-strain Diagrams for carbon steel samples under uniaxial tension were obtained experimentally during loading and after unloading. These Diagrams were used to develop a procedure for determining the stress acting in structural members from the value of the coercive force in the loaded state. A method is proposed to estimate the previous maximum stress from the values of the coercive force measured in the unloaded state.
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Correlation between the Stress-Strain state parameters and magnetic characteristics of carbon steels
The Physics of Metals and Metallography, 2007Co-Authors: E. S. Gorkunov, S V Smirnov, S. M. Zadvorkin, S. Yu. Mitropol’skaya, D. I. VichuzhaninAbstract:A method for reconstruction of the Stress-Strain Diagrams of steel objects from their magnetic characteristics determined directly during tension has been suggested. The coercive force, residual induction in the major hysteresis loops, and the maximum magnetic permeability are recommended as parameters for nondestructive testing of stresses and strains.
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Model of the state of stress in a bilayer steel workpiece during uniaxial tension
Russian Metallurgy (Metally), 2007Co-Authors: E. S. Gorkunov, S. M. Zadvorkin, I. G. Emel’yanov, S. Yu. Mitropol’skayaAbstract:A model for the state of stress in a planar bilayer workpiece under uniaxial tension conditions is proposed, and a method for the calculation of its Stress-Strain diagram from the experimentally obtained tensile curves of its components is developed. This method can be used to solve the inverse problem: using the Stress-Strain Diagrams of one of the components and the entire workpiece, one can calculate the tensile curve of the second component. Since Stress-Strain Diagrams can be obtained by nondestructive magnetic methods directly during loading, the results obtained are important for the diagnostics of loaded bilayer steel construction members.
S V Smirnov - One of the best experts on this subject based on the ideXlab platform.
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Strain hardening and plasticity of low-carbon steels with a heterophase structure: I. Strain hardening characteristics of steels during uniaxial tension
Russian Metallurgy, 2009Co-Authors: V. P. Shveikin, S V SmirnovAbstract:The strain hardening characteristics of low-carbon 10kp, 05G2S2, and 05G2R steels with a heterophase structure (ferritic-martensitic, ferritic-bainitic, ferritic-pearlitic) formed upon quenching from the intercritical temperature range and upon normalization are studied during uniaxial tension. The dislocation structures of these steels are examined by electron microscopy and internal friction, and the results obtained are used to explain the factors that cause the high strain-hardening rate of steels with a two-phase ferritic-martensitic structure. Stress-Strain Diagrams are constructed for steel samples that have various heterophase structures and are subjected to a small preliminary deformation (up to 10%); these Diagrams can be used to compare the strain-hardening characteristics of the steels.
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Correlation between the Stress-Strain state parameters and magnetic characteristics of carbon steels
The Physics of Metals and Metallography, 2007Co-Authors: E. S. Gorkunov, S V Smirnov, S. M. Zadvorkin, S. Yu. Mitropol’skaya, D. I. VichuzhaninAbstract:A method for reconstruction of the Stress-Strain Diagrams of steel objects from their magnetic characteristics determined directly during tension has been suggested. The coercive force, residual induction in the major hysteresis loops, and the maximum magnetic permeability are recommended as parameters for nondestructive testing of stresses and strains.
V. N. Paimushin - One of the best experts on this subject based on the ideXlab platform.
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Physical-Mechanical Properties of a Fiber-Reinforced Composite Based on an ELUR-P Carbon Tape and XT-118 Binder
Mechanics of Composite Materials, 2018Co-Authors: V. N. Paimushin, S. A. KholmogorovAbstract:A series of tests to identify the physical-mechanical properties of a unidirectional carbon-fiber-reinforced composite based on an ELUR-P carbon fibers and an XT-118 epoxy binder were performed. The form of the stress–strain Diagrams of specimens loaded in tension in the longitudinal, transverse, and ±45° directions and in compression in the longitudinal and ±45° directions were examined. Tensile Diagrams were also determined for the XT-118 binder alone. The relation between the tangential shear modulus and shear strains of the composite was highly nonlinear from the very beginning of loading and depended on the loading type. Such a nonlinear response of the carbon-fiber-reinforced composite in shear cannot be the result of plastic deformation of binder, but can be explained only by structural changes caused by the inner buckling instability of the composite at micro- and mesolevels..
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Physical-Mechanical Properties of a Fiber-Reinforced Composite Based on an ELUR-P Carbon Tape and XT-118 Binder
Mechanics of Composite Materials, 2018Co-Authors: V. N. Paimushin, S. A. KholmogorovAbstract:A series of tests to identify the physical-mechanical properties of a unidirectional carbon-fiber-reinforced composite based on an ELUR-P carbon fibers and an XT-118 epoxy binder were performed. The form of the stress–strain Diagrams of specimens loaded in tension in the longitudinal, transverse, and ±45° directions and in compression in the longitudinal and ±45° directions were examined. Tensile Diagrams were also determined for the XT-118 binder alone. The relation between the tangential shear modulus and shear strains of the composite was highly nonlinear from the very beginning of loading and depended on the loading type. Such a nonlinear response of the carbon-fiber-reinforced composite in shear cannot be the result of plastic deformation of binder, but can be explained only by structural changes caused by the inner buckling instability of the composite at micro- and mesolevels..
E. S. Gorkunov - One of the best experts on this subject based on the ideXlab platform.
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Determining the stress state of a stretched rod from its measured magnetic characteristics
Journal of Applied Mechanics and Technical Physics, 2008Co-Authors: E. S. Gorkunov, I. G. Emel’yanov, S. Yu. Mitropol’skayaAbstract:Stress-Strain Diagrams and coercive force-strain Diagrams for carbon steel samples under uniaxial tension were obtained experimentally during loading and after unloading. These Diagrams were used to develop a procedure for determining the stress acting in structural members from the value of the coercive force in the loaded state. A method is proposed to estimate the previous maximum stress from the values of the coercive force measured in the unloaded state.
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Correlation between the Stress-Strain state parameters and magnetic characteristics of carbon steels
The Physics of Metals and Metallography, 2007Co-Authors: E. S. Gorkunov, S V Smirnov, S. M. Zadvorkin, S. Yu. Mitropol’skaya, D. I. VichuzhaninAbstract:A method for reconstruction of the Stress-Strain Diagrams of steel objects from their magnetic characteristics determined directly during tension has been suggested. The coercive force, residual induction in the major hysteresis loops, and the maximum magnetic permeability are recommended as parameters for nondestructive testing of stresses and strains.
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Model of the state of stress in a bilayer steel workpiece during uniaxial tension
Russian Metallurgy (Metally), 2007Co-Authors: E. S. Gorkunov, S. M. Zadvorkin, I. G. Emel’yanov, S. Yu. Mitropol’skayaAbstract:A model for the state of stress in a planar bilayer workpiece under uniaxial tension conditions is proposed, and a method for the calculation of its Stress-Strain diagram from the experimentally obtained tensile curves of its components is developed. This method can be used to solve the inverse problem: using the Stress-Strain Diagrams of one of the components and the entire workpiece, one can calculate the tensile curve of the second component. Since Stress-Strain Diagrams can be obtained by nondestructive magnetic methods directly during loading, the results obtained are important for the diagnostics of loaded bilayer steel construction members.