Preload influence on the dynamic properties of a polyurethane elastomeric foam

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dc.contributor.authorCortazar Noguerol, Julen
dc.contributor.authorCortés Martínez, Fernando
dc.contributor.authorSarría, Imanol
dc.contributor.authorElejabarrieta Olabarri, María Jesús
dc.date.accessioned2024-11-13T11:57:20Z
dc.date.available2024-11-13T11:57:20Z
dc.date.issued2024-07
dc.date.updated2024-11-13T11:57:20Z
dc.description.abstractPolymeric foams are widely used in engineering applications for vibration attenuation. The foams usually work preloaded and it is known that the dynamic properties and attenuation ability of these polymers depend on the preload. In this paper, experimental characterization of a polyurethane elastomeric foam is performed in a frequency range between 1 and 60 Hz, a temperature range between −60 and 30 °C and a preload range between 2 and 12 N, using a Dynamic Mechanical Analyzer. When going from the minimum to the maximum preload, results show the linear viscoelastic range increases 57%. In the frequency sweeps, the storage modulus increases 58% on average, while the loss factor remains unaffected by preload. Moreover, the glassy transition temperature of the material decreases for greater preloads. From the curve-fitting of a four-parameter fractional derivative model using the experimental data, a seven-parameter mathematical model is developed, reducing the number of parameters needed to describe the influence of frequency and preload on the dynamic properties of the material. Hence, it has been established that the relaxation time, relaxed modulus and unrelaxed modulus depend on the exponential of the squared prestress. In contrast, the fractional parameter does not depend on preload for the range under study.en
dc.description.sponsorshipThis study received financial support from Orona EIC S. Coop., from the Department of Education for the Research Group program IT1507\u201322 and from the Department of Economic Development, Sustainability and Environment project KK-2022/00050 of the Basque Governmenten
dc.identifier.citationCortazar-Noguerol, J., Cortés, F., Sarría, I., & Elejabarrieta, M. J. (2024). Preload Influence on the Dynamic Properties of a Polyurethane Elastomeric Foam. Polymers, 16(13). https://doi.org/10.3390/POLYM16131844
dc.identifier.doi10.3390/POLYM16131844
dc.identifier.issn2073-4360
dc.identifier.urihttp://hdl.handle.net/20.500.14454/1821
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rights© 2024 by the authors
dc.subject.otherDynamic properties
dc.subject.otherFractional model
dc.subject.otherFrequency
dc.subject.otherLinear viscoelasticity
dc.subject.otherPolymeric foam
dc.subject.otherPreload
dc.titlePreload influence on the dynamic properties of a polyurethane elastomeric foamen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue13
oaire.citation.titlePolymers
oaire.citation.volume16
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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