Indentation response of a NiTi shape memory alloy: modeling and experiments
The indentation response of a pseudoelastic nickel-titanium based shape memory alloy (SMA) has been analyzed. Indentation tests have been carried out at room temperature using a spherical diamond tip and indentation loads in the range 50-500 mN in order to promote a large stress-induced transformati...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2012-06-01
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| Series: | Fracture and Structural Integrity |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/137 |
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| author | C. Maletta F. Furgiuele E. Sgambitterra M. Callisti B. G. Mellor R. J. K. Wood |
| author_facet | C. Maletta F. Furgiuele E. Sgambitterra M. Callisti B. G. Mellor R. J. K. Wood |
| author_sort | C. Maletta |
| collection | DOAJ |
| description | The indentation response of a pseudoelastic nickel-titanium based shape memory alloy (SMA) has been analyzed. Indentation tests have been carried out at room temperature using a spherical diamond tip and indentation loads in the range 50-500 mN in order to promote a large stress-induced transformation zone in the indentation region and, consequently, to avoid local effects due to microstructural variations. The measured load-displacement data have been analyzed to obtain information on the pseudoelastic response of the alloy. To aid this analysis numerical simulations were performed, by using a commercial finite element (FE) softwarecode and a special constitutive model for SMAs, so as to understand better the microstructural evolution occurring during the indentation process. Finally, the FE model has been used to analyze the effects of temperature on the indentation response of the alloy. This analysis revealed a marked variation of both the maximum and residual penetration depths with increasing test temperature. |
| format | Article |
| id | doaj-art-4348823e31024fb79cbef000a9739916 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2012-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-4348823e31024fb79cbef000a97399162025-01-02T23:01:47ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932012-06-0162110.3221/IGF-ESIS.21.01Indentation response of a NiTi shape memory alloy: modeling and experimentsC. Maletta0F. Furgiuele1E. Sgambitterra2M. Callisti3B. G. Mellor4R. J. K. Wood5Dept. of Mechanical Engineering, University of Calabria, 87036 Rende (CS), Italy.Dept. of Mechanical Engineering, University of Calabria, 87036 Rende (CS), Italy.Dept. of Mechanical Engineering, University of Calabria, 87036 Rende (CS), Italy.Engineering Sciences, University of Southampton, UK.Engineering Sciences, University of Southampton, UK.Engineering Sciences, University of Southampton, UKThe indentation response of a pseudoelastic nickel-titanium based shape memory alloy (SMA) has been analyzed. Indentation tests have been carried out at room temperature using a spherical diamond tip and indentation loads in the range 50-500 mN in order to promote a large stress-induced transformation zone in the indentation region and, consequently, to avoid local effects due to microstructural variations. The measured load-displacement data have been analyzed to obtain information on the pseudoelastic response of the alloy. To aid this analysis numerical simulations were performed, by using a commercial finite element (FE) softwarecode and a special constitutive model for SMAs, so as to understand better the microstructural evolution occurring during the indentation process. Finally, the FE model has been used to analyze the effects of temperature on the indentation response of the alloy. This analysis revealed a marked variation of both the maximum and residual penetration depths with increasing test temperature.https://www.fracturae.com/index.php/fis/article/view/137 |
| spellingShingle | C. Maletta F. Furgiuele E. Sgambitterra M. Callisti B. G. Mellor R. J. K. Wood Indentation response of a NiTi shape memory alloy: modeling and experiments Fracture and Structural Integrity |
| title | Indentation response of a NiTi shape memory alloy: modeling and experiments |
| title_full | Indentation response of a NiTi shape memory alloy: modeling and experiments |
| title_fullStr | Indentation response of a NiTi shape memory alloy: modeling and experiments |
| title_full_unstemmed | Indentation response of a NiTi shape memory alloy: modeling and experiments |
| title_short | Indentation response of a NiTi shape memory alloy: modeling and experiments |
| title_sort | indentation response of a niti shape memory alloy modeling and experiments |
| url | https://www.fracturae.com/index.php/fis/article/view/137 |
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