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Conference Paper: The effects of creep on elastic modulus measurement using nanoindentation

TitleThe effects of creep on elastic modulus measurement using nanoindentation
Authors
KeywordsPhysics Engineering Chemistry
Issue Date2001
PublisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/epubs/proceedings/spring2004/index.html
Citation
Materials Research Society Symposium - Proceedings, 2001, v. 649, p. Q7.1.1-Q7.1.6 How to Cite?
AbstractDuring the unloading segment of nanoindentation, time dependent displacement (TDD) accompanies elastic deformation. Consequently the modulus calculated by the Oliver-Pharr scheme can be overestimated. In this paper we present evidences for the influence of the measured modulus by TDD. A modification method is also presented to correct for the effects of TDD by extrapolating the TDD law in the holding process to the beginning of the unloading process. Using this method, the appropriate holding time and unloading rate can be estimated for nanoindentation test to minimise the effects of TDD. The elastic moduli of three materials computed by the modification method are compared with the results without considering the TDD effects.
Persistent Identifierhttp://hdl.handle.net/10722/46663
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorFeng, Gen_HK
dc.contributor.authorNgan, AHWen_HK
dc.date.accessioned2007-10-30T06:55:24Z-
dc.date.available2007-10-30T06:55:24Z-
dc.date.issued2001en_HK
dc.identifier.citationMaterials Research Society Symposium - Proceedings, 2001, v. 649, p. Q7.1.1-Q7.1.6en_HK
dc.identifier.issn0272-9172en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46663-
dc.description.abstractDuring the unloading segment of nanoindentation, time dependent displacement (TDD) accompanies elastic deformation. Consequently the modulus calculated by the Oliver-Pharr scheme can be overestimated. In this paper we present evidences for the influence of the measured modulus by TDD. A modification method is also presented to correct for the effects of TDD by extrapolating the TDD law in the holding process to the beginning of the unloading process. Using this method, the appropriate holding time and unloading rate can be estimated for nanoindentation test to minimise the effects of TDD. The elastic moduli of three materials computed by the modification method are compared with the results without considering the TDD effects.en_HK
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dc.format.extent41180 bytes-
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dc.languageengen_HK
dc.publisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/epubs/proceedings/spring2004/index.htmlen_HK
dc.relation.ispartofMaterials Research Society Symposium - Proceedingsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsMaterials Research Society Symposium Proceedings. Copyright © Materials Research Society.en_HK
dc.subjectPhysics Engineering Chemistryen_HK
dc.titleThe effects of creep on elastic modulus measurement using nanoindentationen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0272-9172&volume=649&spage=Q7.1.1&epage=Q7.1.6&date=2001&atitle=The+effects+of+creep+on+elastic+modulus+measurement+using+nanoindentationen_HK
dc.identifier.emailNgan, AHW:hwngan@hkucc.hku.hken_HK
dc.identifier.authorityNgan, AHW=rp00225en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.scopuseid_2-s2.0-0034877168en_HK
dc.identifier.hkuros67025-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034877168&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume649en_HK
dc.identifier.spageQ7.1.1en_HK
dc.identifier.epageQ7.1.6en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFeng, G=7401641884en_HK
dc.identifier.scopusauthoridNgan, AHW=7006827202en_HK

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