Knowledge Management System of Institue of Mechanics, CAS
| 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.
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| Source Publication | Journal of Materials Research
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| 2008 | |
| Pages | 2106-2115 |
| ISSN | 0884-2914 |
| Abstract | We 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. |
| Keyword | Depth-sensing Indentation Elastic-modulus Sharp Indentation Elastoplastic Properties Anisotropic Materials Hardness Load Indenter |
| DOI | 10.1557/JMR.2008.0257 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000258240900010 |
| WOS Keyword | DEPTH-SENSING INDENTATION ; ELASTIC-MODULUS ; SHARP INDENTATION ; ELASTOPLASTIC PROPERTIES ; ANISOTROPIC MATERIALS ; HARDNESS ; LOAD ; INDENTER |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25938 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Ong, 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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