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Composites: Mechanics, Computations, Applications: An International Journal

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ISSN Druckformat: 2152-2057

ISSN Online: 2152-2073

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00004 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.08 SJR: 0.153 SNIP: 0.178 CiteScore™:: 1 H-Index: 12

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CLOSED TWO-WAY SHAPE MEMORY EFFECT IN UNIDIRECTIONAL COMPOSITE WITH SHAPE MEMORY ALLOY FIBERS AND ELASTIC MATRIX

Volumen 10, Ausgabe 2, 2019, pp. 135-156
DOI: 10.1615/CompMechComputApplIntJ.2018028623
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ABSTRAKT

Processes of changing the stress–strain state of a unidirectional composite with an elastic matrix and fibers of titanium nickelide during fibers heating and cooling are described in the framework of modified model of nonlinear thermomechanical behavior of the shape memory alloy in phase and structural transformations. Using the approaches of composite materials micromechanics, taking into account the variability of the Young modulus of titanium nickelide and influence of acting stress on the phase transition, the processes of changing the stress–strain state of such a composite as a whole and its components, as well as changes in the phase composition of fibers were studied. Special attention is paid to the research of the possibility of implementing a closed two-way shape memory effect in this system in which the internal stresses disappear completely in the system at the point of direct thermoelastic phase transformation termination in fibers. It is shown that this phenomenon can be described only in the framework of the shape memory alloy behavior model, which takes into account not only the process of martensitic meso-elements nucleation, but the process of their development under direct transformation, i.e., in the case of using systems of constitutive equations correctly describing the phenomenon of oriented transformation. It is shown that a closed two-way shape memory effect takes place at a certain value of the shape memory alloy fiber volume fraction, which is a decreasing function of a given initial fibers deformation.

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