A Modified Method for Hardness Determination from Nanoindentation Experiments with Imperfect Indenters
Joint Authors
Guo, Wei Chao
Xu, Heng
Gao, Xin Qin
Hou, X. L.
Li, Yan
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-27
Country of Publication
Egypt
No. of Pages
8
Abstract EN
Nanoindentation is an effective nondestructive method for small scale determination of mechanical properties of materials.
However, indentation response of metallic materials is very sensitive to indenter tip roundness, size effects, loading rate, and so forth.
This study will analyze the effect of indenter shape imperfections on hardness determination.
For this purpose, experimental investigations and finite element simulations are carried out.
At first, it is found that hardness values determined with Oliver and Pharr’s method are affected by errors caused by imperfect indenter tip: errors increase for imperfect indenters with larger tip radii.
Afterwards, several commonly used methods accounting at different extents for tip radius variations are compared.
However, most of those methods are found not to be accurate for shallow indentation.
For this reason, a novel hardness determination method based on geometrical relations of the imperfect indenter tip is developed.
Results show that the new approach is very effective even in the case of shallow indentation.
American Psychological Association (APA)
Guo, Wei Chao& Xu, Heng& Gao, Xin Qin& Hou, X. L.& Li, Yan. 2016. A Modified Method for Hardness Determination from Nanoindentation Experiments with Imperfect Indenters. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1096470
Modern Language Association (MLA)
Guo, Wei Chao…[et al.]. A Modified Method for Hardness Determination from Nanoindentation Experiments with Imperfect Indenters. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-8.
https://search.emarefa.net/detail/BIM-1096470
American Medical Association (AMA)
Guo, Wei Chao& Xu, Heng& Gao, Xin Qin& Hou, X. L.& Li, Yan. A Modified Method for Hardness Determination from Nanoindentation Experiments with Imperfect Indenters. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1096470
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096470