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Article: A comparison of deconvolution techniques for stress relaxation

TitleA comparison of deconvolution techniques for stress relaxation
Authors
KeywordsDeconvolution
Stress relaxation
Viscoelasticity
Issue Date2002
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jbiomech
Citation
Journal Of Biomechanics, 2002, v. 35 n. 11, p. 1485-1489 How to Cite?
AbstractStress relaxation (or equivalently creep) allows a large range of the relaxation (retardation) spectrum of materials to be examined, particularly at lower frequencies. However, higher frequency components of the relaxation curves (typically of the order of Hertz) are attenuated due to the finite time taken to strain the specimen. This higher frequency information can be recovered by deconvolution of the stress and strain during the loading period. This paper examines the use of three separate deconvolution techniques: numerical (Fourier) deconvolution, semi-analytical deconvolution using a theoretical form of the strain, and deconvolution by a linear approximation method. Both theoretical data (where the exact form of the relaxation function is known) and experimental data were used to assess the accuracy and applicability of the deconvolution methods. All of the deconvolution techniques produced a consistent improvement in the higher frequency data up to the frequencies of the order of Hertz, with the linear approximation method showing better resolution in high-frequency analysis of the theoretical data. When the different deconvolution techniques were applied to experimental data, similar results were found for all three deconvolution techniques. Deconvolution of the stress and strain during loading is a simple and practical method for the recovery of higher frequency data from stress-relaxation experiments. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/79730
ISSN
2015 Impact Factor: 2.431
2015 SCImago Journal Rankings: 1.233
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHolmes, ADen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorLuk, KDKen_HK
dc.contributor.authorLeong, JCYen_HK
dc.date.accessioned2010-09-06T07:57:56Z-
dc.date.available2010-09-06T07:57:56Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of Biomechanics, 2002, v. 35 n. 11, p. 1485-1489en_HK
dc.identifier.issn0021-9290en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79730-
dc.description.abstractStress relaxation (or equivalently creep) allows a large range of the relaxation (retardation) spectrum of materials to be examined, particularly at lower frequencies. However, higher frequency components of the relaxation curves (typically of the order of Hertz) are attenuated due to the finite time taken to strain the specimen. This higher frequency information can be recovered by deconvolution of the stress and strain during the loading period. This paper examines the use of three separate deconvolution techniques: numerical (Fourier) deconvolution, semi-analytical deconvolution using a theoretical form of the strain, and deconvolution by a linear approximation method. Both theoretical data (where the exact form of the relaxation function is known) and experimental data were used to assess the accuracy and applicability of the deconvolution methods. All of the deconvolution techniques produced a consistent improvement in the higher frequency data up to the frequencies of the order of Hertz, with the linear approximation method showing better resolution in high-frequency analysis of the theoretical data. When the different deconvolution techniques were applied to experimental data, similar results were found for all three deconvolution techniques. Deconvolution of the stress and strain during loading is a simple and practical method for the recovery of higher frequency data from stress-relaxation experiments. © 2002 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jbiomechen_HK
dc.relation.ispartofJournal of Biomechanicsen_HK
dc.subjectDeconvolutionen_HK
dc.subjectStress relaxationen_HK
dc.subjectViscoelasticityen_HK
dc.titleA comparison of deconvolution techniques for stress relaxationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9290&volume=35&issue=11&spage=1485&epage=1489&date=2002&atitle=A+comparison+of+deconvolution+techniques+for+stress+relaxationen_HK
dc.identifier.emailLu, WW:wwlu@hku.hken_HK
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0021-9290(02)00180-Xen_HK
dc.identifier.pmid12413967-
dc.identifier.scopuseid_2-s2.0-0036842282en_HK
dc.identifier.hkuros79404en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036842282&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1485en_HK
dc.identifier.epage1489en_HK
dc.identifier.isiWOS:000178679400005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHolmes, AD=7401687268en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK
dc.identifier.scopusauthoridLuk, KDK=7201921573en_HK
dc.identifier.scopusauthoridLeong, JCY=35560782200en_HK

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