Uniaxial high strain rate tension of a TiNi alloy provided by the magnetic pulse method

Ostropiko, Eugeny; Krivosheev, S. I.; Magazinov, Sergey G.

doi:10.1007/s00339-020-04160-7

Cited by 9 publications

(2 citation statements)

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“…The electrical scheme for testing materials for uniaxial direct tension used in this work likes to the previously used one to study the mechanical properties of the TiNi alloy [ 43 , 44 , 45 ]. The experimental setup ( Figure 2 ) consisted of pulsed current generator 1 (PCG), curved flat conductors 2, samples of the studied material

and

, a fiber-optic system including the semiconductor laser 5 with power supply unit, photodetector module 10, circulator 7 with optical fibers 6 and fiber Bragg grating 8, as well as electronic unit 11 performing conversion (ADC), signal processing, and display of measurement results on the personal computer.…”

Section: Experimental Datamentioning

confidence: 99%

Application of Fiber Bragg Gratings as a Sensor of Pulsed Mechanical Action

Kiesewetter

Krivosheev

Magazinov

et al. 2022

Sensors

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The pulsed elongation of fiber Bragg gratings is considered in order to be used to measure the displacement or deformation rate of objects. Optimal measurement modes were determined, numerical simulation of the output signal was performed during pulsed elongation or compression of the fiber grating, and the main patterns were analyzed. The results of the application of the Bragg gratings for the experimental determination of the deformation rate of materials under pulsed magnetic action are presented. Experimentally obtained and theoretical dependencies are compared. The dependencies of the change in the grating parameters—the coefficient and the half-width of the reflection spectrum with successive shortening of the grating—are given.

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Section: Experimental Datamentioning

confidence: 99%

Application of Fiber Bragg Gratings as a Sensor of Pulsed Mechanical Action

Kiesewetter

Krivosheev

Magazinov

et al. 2022

Sensors

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“…В качестве особенности можно отметить формирование в материале напряженного состояния без предварительной нагрузки, что может быть важно для материалов с пространственной анизотропией их деформационных характеристик, таких как композиты, слоистые материалы и некоторые металлы [7][8][9][10]. Ранее для исследования свойств сплава с памятью формы TiNi после высокоскоростного нагружения для реализации магнитно-импульсного деформирования в режиме растяжения была адаптирована одна из схем [11]. Было показано, что этот подход может быть использован для высокоскоростного одноосного деформирования материалов в режиме прямого растяжения и исследования свойств, не связанных с разрушением.…”

Section: Introductionunclassified

Магнитно-импульсное деформирование сплава TiNi: эксперимент и расчет

Ostropiko¹,

Magazinov²,

Krivosheev³

2022

Журнал Технической Физики

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Magnetic-pulse loading methods have been known since the 80s of the XX century and, as a rule, are used to determine the laws of destruction of materials under the action of pressure pulses with a duration of several microseconds. A modified scheme of a magnetic-pulse setup for high strain rate uniaxial tension is used in this work. The application of the scheme with the possibility of experimental measurement of the strain accumulation time and strain rate is shown on samples of TiNi alloy. The paper presents the results of finite element modeling and analytical description. Both approaches have demonstrated good agreement between the calculated residual strain and experimental results, even on samples of TiNi alloy with a specific stress-strain diagram. The analytical solution showed good qualitative agreement in assessing the strain accumulation time. On the basis of the analytical solution, an assessment of the capabilities of the magnetic-pulse loading method for uniaxial high strain rate tension is presented.

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