Tensile testing of sheet metals at elevated temperatures with optical strain rate control
The manufacturing of sheet metal parts from lightweight alloys is often restricted due to limited formability of the applied materials at room temperature. To overcome this issue, thermally supported forming processes like hot forming are used. To map and predict the material behaviour in simulation...
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EDP Sciences
2025-01-01
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| Series: | MATEC Web of Conferences |
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| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01002.pdf |
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| author | Naumann David Merklein Marion |
| author_facet | Naumann David Merklein Marion |
| author_sort | Naumann David |
| collection | DOAJ |
| description | The manufacturing of sheet metal parts from lightweight alloys is often restricted due to limited formability of the applied materials at room temperature. To overcome this issue, thermally supported forming processes like hot forming are used. To map and predict the material behaviour in simulations, the materials have to be characterised at elevated temperatures. For the elasto-plastic behaviour, this typically is done by tensile tests. Thereby, dependent of the testing system, inhomogeneous temperature distributions are introduced to the sample unintentionally. This commonly known issue leads to an unintended increase of the strain rate during testing. Optical strain rate controlling (OSRC) is a new approach that enables the determination of the strain hardening behaviour of sheet materials at a constant true strain rate. Hence, in the scope of this contribution, the titanium alloy Ti-6Al-4V, is investigated at temperatures between 600 °C and 900 °C, at strain rates of up to 0.1 s-1. The tensile tests were carried out on a Gleeble 3500 GTC simulator together with an ARAMIS 3D DIC system for the in-situ strain measurement. The deviation of the strain rate evolution was improved up to fourfold by using the OSRC method in comparison to the conventional testing procedure. |
| format | Article |
| id | doaj-art-e1e2ea8824b0495da1c656f604eacb1b |
| institution | Kabale University |
| issn | 2261-236X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
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| series | MATEC Web of Conferences |
| spelling | doaj-art-e1e2ea8824b0495da1c656f604eacb1b2025-08-20T03:53:51ZengEDP SciencesMATEC Web of Conferences2261-236X2025-01-014080100210.1051/matecconf/202540801002matecconf_iddrg2025_01002Tensile testing of sheet metals at elevated temperatures with optical strain rate controlNaumann David0Merklein Marion1Institute of Manufacturing Technology (LFT), Friedrich-Alexander-Universität Erlangen-NürnbergInstitute of Manufacturing Technology (LFT), Friedrich-Alexander-Universität Erlangen-NürnbergThe manufacturing of sheet metal parts from lightweight alloys is often restricted due to limited formability of the applied materials at room temperature. To overcome this issue, thermally supported forming processes like hot forming are used. To map and predict the material behaviour in simulations, the materials have to be characterised at elevated temperatures. For the elasto-plastic behaviour, this typically is done by tensile tests. Thereby, dependent of the testing system, inhomogeneous temperature distributions are introduced to the sample unintentionally. This commonly known issue leads to an unintended increase of the strain rate during testing. Optical strain rate controlling (OSRC) is a new approach that enables the determination of the strain hardening behaviour of sheet materials at a constant true strain rate. Hence, in the scope of this contribution, the titanium alloy Ti-6Al-4V, is investigated at temperatures between 600 °C and 900 °C, at strain rates of up to 0.1 s-1. The tensile tests were carried out on a Gleeble 3500 GTC simulator together with an ARAMIS 3D DIC system for the in-situ strain measurement. The deviation of the strain rate evolution was improved up to fourfold by using the OSRC method in comparison to the conventional testing procedure.https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01002.pdftensile testgleebledicstrain rate |
| spellingShingle | Naumann David Merklein Marion Tensile testing of sheet metals at elevated temperatures with optical strain rate control MATEC Web of Conferences tensile test gleeble dic strain rate |
| title | Tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| title_full | Tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| title_fullStr | Tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| title_full_unstemmed | Tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| title_short | Tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| title_sort | tensile testing of sheet metals at elevated temperatures with optical strain rate control |
| topic | tensile test gleeble dic strain rate |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01002.pdf |
| work_keys_str_mv | AT naumanndavid tensiletestingofsheetmetalsatelevatedtemperatureswithopticalstrainratecontrol AT merkleinmarion tensiletestingofsheetmetalsatelevatedtemperatureswithopticalstrainratecontrol |