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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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Barlo, Alexander
Blekinge Institute of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (3/3 displayed)
- 2023An evaluation method for experimental necking detection of automotive sheet metalscitations
- 2019On the Failure Prediction of Dual-Phase Steel and Aluminium Alloys Exposed to Combined Tension and Bendingcitations
- 2019On the Failure Prediction of Dual-Phase Steel and Aluminium Alloys Exposed to Combined Tension and Bendingcitations
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article
An evaluation method for experimental necking detection of automotive sheet metals
Abstract
<jats:title>Abstract</jats:title><jats:p>In sheet metal stamping, the occurrence of strain localization in a deformed sheet is considered a failure. As so, sheet metal’s formability is conventionally evaluated using the Forming Limit Diagram (FLD), which separates the principal strain space into safety and unsafety regions by a Forming Limit Curve (FLC). This study presents an evaluation method for detecting strain localization based on Digital Image Correlation (DIC) during the experiment. The commercial DIC software ARAMIS is adopted to monitor the strain-field distribution on the deformed specimen’s surface. A detailed analysis of the proposed method is presented considering Nakajima tests conducted for two automotive sheet metals: AA6016 and DP800. The identified FLC based on the proposed method is compared with that of well-established methods such as ISO 12004:2-2008 and time-dependent methods. For both investigated materials, the proposed method presents a lower FLC than the others.</jats:p>