| Title | Investigation on cross-scale indentation scaling relationships of elastic-plastic solids |
| Authors | Yu, Zhijie Lin, Zhongya Wei, Yueguang |
| Affiliation | Peking Univ, BIC ESAT, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China |
| Issue Date | Feb-2021 |
| Publisher | ACTA MECHANICA |
| Abstract | Indentation scaling relationships provide normalized guidance for measuring and predicting mechanical properties in indentation experiments. At the nano-scale, the material size-effect is significant, while conventional scaling relationships fail to depict this phenomenon in nanoindentation precisely. In the present research, cross-scale indentation scaling relationships are investigated using a strain gradient theory. The nanoindentation response is found to be sensitive to different material parameters, including the material intrinsic length, yield stress, and work-hardening exponent across size-scales. If the strain gradient effect is ignored, the nanoindentation scaling relationships approach the macroscopic conventional ones. The cross-scale indentation scaling relationships obtained in the form of dimensionless functions in this work provide quantitative references to instrumented indentation tests on multiple size-scales, coinciding well with experimental results. The understanding of nanoindentation hardness is enhanced by the present work. |
| URI | http://hdl.handle.net/20.500.11897/608576 |
| ISSN | 0001-5970 |
| DOI | 10.1007/s00707-020-02913-2 |
| Indexed | EI SCI(E) |
| Appears in Collections: | 工学院 |
