The damping behaviour of superelastic NiTi components
Saved in:
| Title: | The damping behaviour of superelastic NiTi components |
|---|---|
| Authors: | Schmidt, Ina ina.schmidt@unibw-hamburg.de, Lammering, Rolf1 |
| Source: | Materials Science & Engineering: A. Jul2004, Vol. 378 Issue 1/2, p70-75. 6p. |
| Subjects: | Alloys, Damping (Mechanics), Elasticity, Steel |
| Abstract: | A set of experimental investigations on the transformation behavior of superelastic NiTi components has been undertaken with respect to damping. Tensile tests have shown, that the beginning of the transformation is shifted to lower stresses with increasing frequency. Therefore dynamic loads can give rise to considerable damping even if the load is below the level of the transformation–stress plateau in the quasistatic case. However it has to be taken into consideration that the amount of transformed material is much lower than in the plateau-region and the dissipated energy decreases with increasing frequency. For an estimation of the attainable damping capacity, experiments on a pre-strained string were performed to enable a comparison of the damping ratios of NiTi elements at different stages of transformation. An increase of amplitudes leads to higher damping values for NiTi in the plateau-region, while in the completely transformed stage NiTi exhibits an amplitude-independent damping behaviour with values that are smaller than those observed in experiments with steel. Further experiments have been performed with coil springs made from NiTi. Again increasing pre-stress as well as an increasing vibration amplitude lead to a stronger damping of the NiTi springs and the vibrating system. The calculated damping values from the performed experiments are result of a linear analysis. [Copyright &y& Elsevier] |
| Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 13688082 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: The damping behaviour of superelastic NiTi components – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Schmidt%2C+Ina%22">Schmidt, Ina</searchLink><i> ina.schmidt@unibw-hamburg.de</i><br /><searchLink fieldCode="AR" term="%22Lammering%2C+Rolf%22">Lammering, Rolf</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+Science+%26+Engineering%3A+A%22">Materials Science & Engineering: A</searchLink>. Jul2004, Vol. 378 Issue 1/2, p70-75. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Damping+%28Mechanics%29%22">Damping (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Elasticity%22">Elasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Steel%22">Steel</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A set of experimental investigations on the transformation behavior of superelastic NiTi components has been undertaken with respect to damping. Tensile tests have shown, that the beginning of the transformation is shifted to lower stresses with increasing frequency. Therefore dynamic loads can give rise to considerable damping even if the load is below the level of the transformation–stress plateau in the quasistatic case. However it has to be taken into consideration that the amount of transformed material is much lower than in the plateau-region and the dissipated energy decreases with increasing frequency. For an estimation of the attainable damping capacity, experiments on a pre-strained string were performed to enable a comparison of the damping ratios of NiTi elements at different stages of transformation. An increase of amplitudes leads to higher damping values for NiTi in the plateau-region, while in the completely transformed stage NiTi exhibits an amplitude-independent damping behaviour with values that are smaller than those observed in experiments with steel. Further experiments have been performed with coil springs made from NiTi. Again increasing pre-stress as well as an increasing vibration amplitude lead to a stronger damping of the NiTi springs and the vibrating system. The calculated damping values from the performed experiments are result of a linear analysis. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=13688082 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.msea.2003.09.106 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 70 Subjects: – SubjectFull: Alloys Type: general – SubjectFull: Damping (Mechanics) Type: general – SubjectFull: Elasticity Type: general – SubjectFull: Steel Type: general Titles: – TitleFull: The damping behaviour of superelastic NiTi components Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Schmidt, Ina – PersonEntity: Name: NameFull: Lammering, Rolf IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 07 Text: Jul2004 Type: published Y: 2004 Identifiers: – Type: issn-print Value: 09215093 Numbering: – Type: volume Value: 378 – Type: issue Value: 1/2 Titles: – TitleFull: Materials Science & Engineering: A Type: main |
| ResultId | 1 |
