Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijimpeng.2009.10.008
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dc.titleDynamic behaviour of UHMWPE yarns and addressing impedance mismatch effects of specimen clamps
dc.contributor.authorKoh, A.C.P.
dc.contributor.authorShim, V.P.W.
dc.contributor.authorTan, V.B.C.
dc.date.accessioned2014-10-07T09:03:12Z
dc.date.available2014-10-07T09:03:12Z
dc.date.issued2010-03
dc.identifier.citationKoh, A.C.P., Shim, V.P.W., Tan, V.B.C. (2010-03). Dynamic behaviour of UHMWPE yarns and addressing impedance mismatch effects of specimen clamps. International Journal of Impact Engineering 37 (3) : 324-332. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijimpeng.2009.10.008
dc.identifier.issn0734743X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/85032
dc.description.abstractThe dynamic stress-strain behaviour of Spectra® 900 yarns, made of highly oriented ultra-high molecular weight polyethylene (UHMWPE), is determined by means of a tensile split Hopkinson bar arrangement incorporating special grips to clamp the specimens. Test results show that a five-element viscoelastic constitutive model captures the behaviour of Spectra® 900 yarns with good fidelity. Not uncommonly, as in this instance, grips used to clamp specimens introduce an impedance mismatch with the input/output bars, and the design of the clamps may not be amenable to modification to yield an impedance match. Consequently, an algorithm is developed to relate the strain signals from the input/output bars to what is experienced by the grips, and thus what is imposed on the specimen. This enables the extraction of corrected quantities for insertion into the Hopkinson bar equations. The proposed method is validated by finite element analysis. © 2009 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ijimpeng.2009.10.008
dc.sourceScopus
dc.subjectConstitutive model
dc.subjectDynamic testing
dc.subjectStrain rate
dc.subjectViscoelastic
dc.subjectYarns
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.ijimpeng.2009.10.008
dc.description.sourcetitleInternational Journal of Impact Engineering
dc.description.volume37
dc.description.issue3
dc.description.page324-332
dc.description.codenIJIED
dc.identifier.isiut000273106000010
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