A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V.
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| Title: | A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V. |
|---|---|
| Authors: | Pittman, E.R.1 (AUTHOR) erpittman@mines.edu, Clarke, A. J.2,3 (AUTHOR) aclarke@lanl.gov, Lamberson, L. E.4 (AUTHOR) les@mines.edu |
| Source: | Experimental Techniques. Jun2025, Vol. 49 Issue 3, p475-491. 17p. |
| Subjects: | Digital image correlation, Hopkinson bars (Testing), Strain rate, Thermography, High temperatures |
| Abstract: | An experimental apparatus for measuring the dynamic behavior of materials subjected to strain rates on the order of 10 3 s - 1 and temperatures up to 800°C with a unique triple actuation system is developed in this work. This system is based on the traditional Kolsky (or split-Hopkinson pressure) bar design, with the addition of an external furnace used to heat the specimen to the desired temperature. A synchronized triple pneumatic actuation system is used to control the motion and timing of the the sample, incident, and transmitted bars. The cold contact time (CCT), or the time during which the heated sample is in contact with the room temperature bars before compression, is measured experimentally and carefully controlled to minimize the development of a temperature gradient across the sample and avoid heating of the bars. Experiments are performed in conjunction with ultra high speed imaging and 2D digital image correlation (DIC), as well as high speed thermal imaging. To verify the viability of the proposed system, experiments were conducted on Ti-6Al-4V (wt.%) at temperatures from 25°C up to and 800°C at an average strain rate of approximately 1200 s - 1 . [ABSTRACT FROM AUTHOR] |
| Copyright of Experimental Techniques is the property of Springer Nature 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 185237916 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pittman%2C+E%2ER%2E%22">Pittman, E.R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> erpittman@mines.edu</i><br /><searchLink fieldCode="AR" term="%22Clarke%2C+A%2E+J%2E%22">Clarke, A. J.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> aclarke@lanl.gov</i><br /><searchLink fieldCode="AR" term="%22Lamberson%2C+L%2E+E%2E%22">Lamberson, L. E.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> les@mines.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Experimental+Techniques%22">Experimental Techniques</searchLink>. Jun2025, Vol. 49 Issue 3, p475-491. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Digital+image+correlation%22">Digital image correlation</searchLink><br /><searchLink fieldCode="DE" term="%22Hopkinson+bars+%28Testing%29%22">Hopkinson bars (Testing)</searchLink><br /><searchLink fieldCode="DE" term="%22Strain+rate%22">Strain rate</searchLink><br /><searchLink fieldCode="DE" term="%22Thermography%22">Thermography</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: An experimental apparatus for measuring the dynamic behavior of materials subjected to strain rates on the order of 10 3 s - 1 and temperatures up to 800°C with a unique triple actuation system is developed in this work. This system is based on the traditional Kolsky (or split-Hopkinson pressure) bar design, with the addition of an external furnace used to heat the specimen to the desired temperature. A synchronized triple pneumatic actuation system is used to control the motion and timing of the the sample, incident, and transmitted bars. The cold contact time (CCT), or the time during which the heated sample is in contact with the room temperature bars before compression, is measured experimentally and carefully controlled to minimize the development of a temperature gradient across the sample and avoid heating of the bars. Experiments are performed in conjunction with ultra high speed imaging and 2D digital image correlation (DIC), as well as high speed thermal imaging. To verify the viability of the proposed system, experiments were conducted on Ti-6Al-4V (wt.%) at temperatures from 25°C up to and 800°C at an average strain rate of approximately 1200 s - 1 . [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Experimental Techniques is the property of Springer Nature 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s40799-024-00762-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 475 Subjects: – SubjectFull: Digital image correlation Type: general – SubjectFull: Hopkinson bars (Testing) Type: general – SubjectFull: Strain rate Type: general – SubjectFull: Thermography Type: general – SubjectFull: High temperatures Type: general Titles: – TitleFull: A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pittman, E.R. – PersonEntity: Name: NameFull: Clarke, A. J. – PersonEntity: Name: NameFull: Lamberson, L. E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 07328818 Numbering: – Type: volume Value: 49 – Type: issue Value: 3 Titles: – TitleFull: Experimental Techniques Type: main |
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