Reconstruction of the Hardening Curve of a Material Basedon the Results of Compression Experiments

Berendeyev, N. N.; Zimin, N. V.; Leontyev, N. V.; Lyubimov, A. K.; Смирнов, И. А.; Storozhev, E. V.

doi:10.32326/1814-9146-2015-77-1-75-84

PSP

2015

DOI: 10.32326/1814-9146-2015-77-1-75-84

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Reconstruction of the Hardening Curve of a Material Basedon the Results of Compression Experiments

N. N. Berendeyev¹,

N. V. Zimin²,

N. V. Leontyev³

et al.

Abstract: Ïðåäëîaeåíà ðàñ÷åòíî-ýêñïåðèìåíòàëüíàÿ ìåòîäèêà âîññòàíîâëåíèÿ êðèâîé óïðî÷íåíèÿ ìåòàëëîâ ñ ìàëîé òâåðäîñòüþ, äëÿ êîòîðûõ íåâîçìîaeíî ïðîâåäåíèå ýêñïåðèìåíòîâ ïî ðàñòÿaeåíèþ îáðàçöà. Ìåòîäèêà îñíîâàíà íà èäåíòèôèêàöèè ïàðàìåòðîâ êðèâîé óïðî÷íåíèÿ íà áàçå ïåðâè÷íîé äèàãðàììû ñaeàòèÿ. Ïàðàìåòðû êðèâîé îïðåäåëÿþòñÿ èç ðåøåíèÿ çàäà÷è ìèíèìèçàöèè ñðåä-íåêâàäðàòè÷íîãî îòêëîíåíèÿ ìîäåëüíûõ çíà÷åíèé îò ýêñïåðèìåíòàëüíûõ çíà-÷åíèé äèàãðàììû ñaeàòèÿ. Âåðèôèêàöèÿ ìåòîäèêè âûïîëíåíà íà îñíîâå ýêñïåðèìåíòàëüíûõ äàííûõ äëÿ … Show more

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Longevity: from social practice to social technology

Bekarev

Pak

2021

The Digital Scholar Philosopher S Lab

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Russian research projects on longevity are actively proceeding in line with social constructivism. Since Russian researchers, according to some Western theorists (P. Bourdieu, K. Popper, D. Buettner and others), have long been held captive by historicist il-lusions, it is fundamentally important that the concept of longevity discussed in Russian literature should not be an “utopian” but a “gradual, step-by-step” kind of social engineering as a purposeful activity to improve social reality. It has to include not so-cial practices, but rather technologies because of their greater effectiveness. This article aims to reveal the peculiarity of social technologies of longevity. The main problem is the demarcation between social practices and technology of longevity. The peculiarity of social technologies of longevity in relation to social practices is revealed in the grid of categories, such as spontaneous–conscious (goal), professional–amateur (activity), and scientific–extra-scientific (knowledge). Ideally, any social technology tends to become a practice and get a residence permit in the structures of the everyday world.

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Longevity: from social practice to social technology

Bekarev

Pak

2021

The Digital Scholar Philosopher S Lab

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Characteristics of fiber-optic photoacoustic transducers with monolayer of metal nanoparticles for systems of technical diagnostics

Mikitchuk

Kozadaev

2020

Journal of the Belarusian State University. Physics

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The work is devoted to the experimental study of the microstructural and morphological properties of nanostructures as part of a prototype of fiber-optic photoacoustic transducer. The transducer has been created to confirm the theoretical investigations previously obtained by the authors during the study the conditions of the most effective photoacoustic gene ration. To solve the main problem that arises when creating photoacoustic transducers, namely reducing the thickness of the absorbing layer, we used a nanostructure based on a monolayer of silver nanoparticles with size gamma-distribution, the average diameter of 35 nm with RMS-size of 12 nm. The method of simultaneous measuring both efficiency of photoacoustic conversion and frequency response of a photoacoustic transducer is proposed for the first time. The method allows experimental investigation of transduces output parameters versus the modulation mode of the optical signal. The proposed method is based on the usage of the main measurement channel for irradiating the photoacoustic transducer and a reference channel based on fiber optical coupler and photodiode. The experiment shows the reliable generation of ultrasound at frequencies of 10 –18 MHz with a prototype of photoacoustic transducer. During one hour irradiation, degradation of two-dimensional surface nanostructures has not been observed. This allows such type of photoacoustic transducer to be used as part of a new generation of technical diagnostics systems.

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Reconstruction of the Hardening Curve of a Material Basedon the Results of Compression Experiments

Cited by 2 publications

References 0 publications

Longevity: from social practice to social technology

Longevity: from social practice to social technology

Characteristics of fiber-optic photoacoustic transducers with monolayer of metal nanoparticles for systems of technical diagnostics

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