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Wackenrohr, Steffen
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Publications (6/6 displayed)
- 2024Corrosion fatigue behavior of nanoparticle modified iron processed by electron powder bed fusion
- 2023Correlating Ultrasonic Velocity in DC04 with Microstructure for Quantification of Ductile Damage
- 2022Corrosion fatigue behavior of electron beam melted iron in simulated body fluid
- 2021Influence of Pre-strain on Very-Low-Cycle Stress–Strain Response and Springback Behavior
- 2021Fringe Projection Profilometry in Production Metrology: A Multi-Scale Comparison in Sheet-Bulk Metal Formingcitations
- 2021On the Microstructural and Cyclic Mechanical Properties of Pure Iron Processed by Electron Beam Meltingcitations
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article
Correlating Ultrasonic Velocity in DC04 with Microstructure for Quantification of Ductile Damage
Abstract
The detection of ductile damage by image-based methods is time-consuming and typically probes only small areas. It is therefore of great interest for various cold forming processes, such as sheet-bulk metal forming, to develop new methods that can be used during the forming process and that enable an efficient detection of ductile damage. In the present study, ductile damage in DC04 was examined using ultrasonic testing. First, different grain sizes were set by heat treatment. Subsequently, the sheet metal was formed by cold rolling. A clear correlation between the average void diameter and the measured ultrasonic velocity could be shown. The ultrasonic velocity showed a clear decrease when the average void size increased because of the increasing forming degree. The ultrasonic measurements were finally employed to calculate a damage parameter D to determine the amount of ductile damage in the microstructure for different grain sizes after cold rolling.