dc.contributor.author | Sun, Yuchen | |
dc.contributor.author | Kooi, Steven E | |
dc.contributor.author | Nelson, Keith Adam | |
dc.contributor.author | Hsieh, Alex J | |
dc.contributor.author | Veysset, David Georges | |
dc.date.accessioned | 2021-02-03T21:45:31Z | |
dc.date.available | 2021-02-03T21:45:31Z | |
dc.date.issued | 2020-07 | |
dc.date.submitted | 2020-05 | |
dc.identifier.issn | 0003-6951 | |
dc.identifier.issn | 1077-3118 | |
dc.identifier.uri | https://hdl.handle.net/1721.1/129665 | |
dc.description.abstract | Deformation-induced glass transition in segmented elastomers has been proposed to allow highly desirable enhanced energy dissipation. In this study, we investigate the temperature-dependent microscale impact response of polyurea at a fixed impact velocity. We observe a local elevated impact energy absorption around 115 °C, which is attributed to the glass-to-rubber transition temperature under the present high-rate dynamic loading. Dielectric spectroscopy was performed, and the soft-segmental α2-relaxation was extracted and fit with a Havriliak-Negami function. The α2-relaxation frequency at 115 °C correlates well with an order-of-magnitude estimate of the equivalent frequency of deformation. This work further supports the importance of the dynamical Tg as an important consideration in the design of impact resistant materials. | en_US |
dc.description.sponsorship | Army Research Office and Army Research Laboratory (Contract W911NF-18-2-0048) | en_US |
dc.language.iso | en | |
dc.publisher | AIP Publishing | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1063/5.0013081 | en_US |
dc.rights | Creative Commons Attribution-Noncommercial-Share Alike | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | en_US |
dc.source | Other repository | en_US |
dc.title | Impact-induced glass-to-rubber transition of polyurea under high-velocity temperature-controlled microparticle impact | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Sun, Yuchen et al. "Impact-induced glass-to-rubber transition of polyurea under high-velocity temperature-controlled microparticle impact." 117, 2 (July 2020): 021905 © 2020 Author(s) | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemistry | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies | en_US |
dc.relation.journal | Applied Physics Letters | en_US |
dc.eprint.version | Author's final manuscript | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2020-09-18T15:43:07Z | |
dspace.date.submission | 2020-09-18T15:43:09Z | |
mit.journal.volume | 117 | en_US |
mit.journal.issue | 2 | en_US |
mit.license | OPEN_ACCESS_POLICY | |
mit.metadata.status | Complete | |