Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6918
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dc.contributorDepartment of Applied Physics-
dc.creatorMa, D-
dc.creatorZhang, T-
dc.creatorOng, CW-
dc.date.accessioned2014-12-11T08:26:16Z-
dc.date.available2014-12-11T08:26:16Z-
dc.identifier.issn0884-2914-
dc.identifier.urihttp://hdl.handle.net/10397/6918-
dc.language.isoenen_US
dc.publisherCambridge University Pressen_US
dc.rights© 2006 Materials Research Society. The following article "Dejun Ma, Taihua Zhang and Chung Wo Ong (2006). Evaluation of the effectiveness of representative methods for determining Young's modulus and hardness from instrumented indentation data. Journal of Materials Research, 21(1), pp 225-233. doi:10.1557/jmr.2006.0019." is available at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8029975en_US
dc.subjectComputer simulationen_US
dc.subjectElastic modulien_US
dc.subjectEstimationen_US
dc.subjectFinite element methoden_US
dc.subjectHardnessen_US
dc.subjectYield stressen_US
dc.titleEvaluation of the effectiveness of representative methods for determining Young’s modulus and hardness from instrumented indentation dataen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: Chung Wo Ongen_US
dc.identifier.spage225-
dc.identifier.epage233-
dc.identifier.volume21-
dc.identifier.issue1-
dc.identifier.doi10.1557/JMR.2006.0019-
dcterms.abstractThe effectiveness of Oliver & Pharr's (O&P's) method, Cheng & Cheng's (C&C's) method, and a new method developed by our group for estimating Young's modulus and hardness based on instrumented indentation was evaluated for the case of yield stress to reduced Young's modulus ratio (σ[sub y]/E[sub r]) ≥ 4.55 × 10⁻⁴ and hardening coefficient (n) ≤ 0.45. Dimensional theorem and finite element simulations were applied to produce reference results for this purpose. Both O&P's and C&C's methods overestimated the Young's modulus under some conditions, whereas the error can be controlled within ± 16% if the formulation was modified with appropriate correction functions. Similar modification was not introduced to our method for determining Young's modulus, while the maximum error of results was around ± 13%. The errors of hardness values obtained from all the three methods could be even larger and were irreducible with any correction scheme. It is therefore suggested that when hardness values of different materials are concerned, relative comparison of the data obtained from a single standard measurement technique would be more practically useful. It is noted that the ranges of error derived from the analysis could be different if different ranges of material parameters σ[sub y]/E[sub r] and n are considered.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of materials research, Jan. 2006, v. 21, no. 1, p. 225-233-
dcterms.isPartOfJournal of materials research-
dcterms.issued2006-01-
dc.identifier.isiWOS:000234582900029-
dc.identifier.scopus2-s2.0-33644546008-
dc.identifier.eissn2044-5326-
dc.identifier.rosgroupidr28639-
dc.description.ros2005-2006 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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