IMECH-IR  > 力学所知识产出(1956-2008)
An Improved Energy Method For Determining Young'S Modulus By Instrumented Indentation Using A Berkovich Tip
Ma DJ; Ong CW; Zhang TH(张泰华); Ong, CW (reprint author), Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China.
Source PublicationJournal of Materials Research
2008
Pages2106-2115
ISSN0884-2914
AbstractWe previously proposed a method for estimating Young's modulus from instrumented nanoindentation data based on a model assuming that the indenter had a spherical-capped Berkovich geometry to take account of the bluntness effect. The method is now further improved by releasing the constraint on the tip shape, allowing it to have a much broader arbitrariness to range from a conical-tipped shape to a flat-ended shape, whereas the spherical-capped shape is just a special case in between. This method requires two parameters to specify a tip geometry, namely, a volume bluntness ratio V-r and a height bluntness ratio h(r). A set of functional relationships correlating nominal hardness/reduced elastic modulus ratio (H-n/E-r) and elastic work/total work ratio (W-e/W) were established based on dimensional analysis and finite element simulations, with each relationship specified by a set of V-r and h(r). Young's modulus of an indented material can be estimated from these relationships. The method was shown to be valid when applied to S45C carbon steel and 6061 aluminum alloy.
KeywordDepth-sensing Indentation Elastic-modulus Sharp Indentation Elastoplastic Properties Anisotropic Materials Hardness Load Indenter
DOI10.1557/JMR.2008.0257
Indexed BySCI
Language英语
WOS IDWOS:000258240900010
WOS KeywordDEPTH-SENSING INDENTATION ; ELASTIC-MODULUS ; SHARP INDENTATION ; ELASTOPLASTIC PROPERTIES ; ANISOTROPIC MATERIALS ; HARDNESS ; LOAD ; INDENTER
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/25938
Collection力学所知识产出(1956-2008)
Corresponding AuthorOng, CW (reprint author), Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China.
Recommended Citation
GB/T 7714
Ma DJ,Ong CW,Zhang TH,et al. An Improved Energy Method For Determining Young'S Modulus By Instrumented Indentation Using A Berkovich Tip[J]. Journal of Materials Research,2008:2106-2115.
APA Ma DJ,Ong CW,张泰华,&Ong, CW .(2008).An Improved Energy Method For Determining Young'S Modulus By Instrumented Indentation Using A Berkovich Tip.Journal of Materials Research,2106-2115.
MLA Ma DJ,et al."An Improved Energy Method For Determining Young'S Modulus By Instrumented Indentation Using A Berkovich Tip".Journal of Materials Research (2008):2106-2115.
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