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539.377:620.22 (1) |
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SM ISO690:2012 ZHUKOVSKY, V., GOKHMAN, A., ZAVOLOKA, Michael, GRYNYOVA, I.. Thermal deformation waves in heterogeneous materials. In: Journal of Engineering Sciences, 2018, vol. 25, nr. 4, pp. 35-38. ISSN 2587-3474. DOI: https://doi.org/10.5281/zenodo.2576733 |
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Journal of Engineering Sciences | ||||||
Volumul 25, Numărul 4 / 2018 / ISSN 2587-3474 /ISSNe 2587-3482 | ||||||
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DOI:https://doi.org/10.5281/zenodo.2576733 | ||||||
CZU: 539.377:620.22 | ||||||
Pag. 35-38 | ||||||
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In the paper, a stress-strain detection method is used by correlation point interferometry, in which the resolution of the recording surface changes has been significantly (ten times) improved. This result was obtained by applying a different image-processing algorithm, which allows the recording of 3D surface changes in on-line mode. The deformation wave that occurs during heating propagates through the entire sample and interacts with the interfaces. The inhomogeneity and residual deformations of a material lead to a distortion of the front. The speckle electron interferometry (ESI) method allows the recording of this thermal deformation wave front and the estimation of the stress state of the studied material. |
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Cuvinte-cheie heterogeneous materials, stress strain, thermal deformation wave, speckle electron interferometry (ESI)., materiale heterogene, încordare la stres, val de deformare termică. interferometrie electronică cu speckle (ESI) |
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