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Prediction of viscoelastic material functionsfrom constant stress- or strain-rate experimentsSaprunov, Ivan ; Gergesova, Marina ; Emri, IgorTo predict durability of polymeric structures an information on polymers long-term properties in the form of relaxation modulus and/or creep compliance is required. It iswell known that determination ... of relaxation or creep properties from experimental data isan inverse problem, which, due to presence of experimental errors in input data, becomesill-posed. To find a stable solution using standard integration schemes is practically impos-sible. In this paper we propose a hands-on methodology which bypasses the solution ofill-posed integral equation and allows finding long-term relaxation or creep properties fromsimple constant strain rate or constant stress-rate experiments performed at different temper-atures. The proposed approach can be applied not only for characterization of viscoelasticmaterials in solid state but can also be used for prediction of time-dependent properties ofpolymer melts. The paper presents the detailed steps of the proposed method as well as itsvalidation on several simulated and real experimental data. It has been shown that the pro-posed approach can accurately reconstruct the desired long-term time-dependent propertiesobtained in traditional way (i.e., from step loading).Source: Mechanics of time-dependent materials : an international journal devoted to the time-dependent behaviour of materials and structures. - ISSN 1385-2000 (Vol. 18, iss. 2, 2014, str. 349-372)Type of material - article, component part ; adult, seriousPublish date - 2014Language - englishCOBISS.SI-ID - 13309211
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source: Mechanics of time-dependent materials : an international journal devoted to the time-dependent behaviour of materials and structures. - ISSN 1385-2000 (Vol. 18, iss. 2, 2014, str. 349-372)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Saprunov, Ivan | 33012 |
Gergesova, Marina | 30976 |
Emri, Igor | 04316 |
Source: Personal bibliographies
and: SICRIS
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