Journal: Production Engineering - Research and Development

Abbreviation

Prod. Eng. Res. Devel.

Publisher

Springer

Journal Volumes

ISSN

1863-7353
0944-6524

Description

Filters

2015 - 201932020 - 20212
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Publications 1 - 5 of 5
  • Local reinforcement of aerospace structures using co-curing RTM of metal foil hybrid composites
    Item type: Journal Article
    Studer, Julia; Keller, Andre; Leone, Fabrizio; et al. (2018)
    Production Engineering - Research and Development
  • Evaluation of process-induced damage based on dynamic recrystallization during hot caliber rolling
    Item type: Journal Article
    Imran, Muhammad; Afzal, Muhammad Junaid; Buhl, Johannes; et al. (2020)
    Production Engineering - Research and Development
    The amount of damage induced during hot forming depends not only on the stress state but also on material softening due to dynamic recrystallization (DRX), which can be used to delay or reduce damage initiation. An extension to the Gurson–Tvergaard–Needleman (GTN) model has been proposed recently that includes a new coupled DRX-damage nucleation criterion taking DRX and the stress state into account. In the present paper, a 4-pass caliber rolling process is considered where the bar stock is rotated by 90° after each rolling pass. The extended GTN model is applied to the caliber rolling process to predict the internal damage induced during the rolling process. The simulation results show that the highest void volume fraction (VVF) occurs during the first rolling pass. However, the variations of stress state during each pass assist in reducing the damage in the subsequent passes. The material softening due to increasing DRX in subsequent passes also helps to reduce the void nucleation. The microscopic analysis of the rolled bar confirms the damage distribution predicted by the simulations. © German Academic Society for Production Engineering (WGP) 2019.
  • Hybrid manufacturing of sheet metals and functionalizing for joining applications via hole flanging
    Item type: Journal Article
    Bambach, Markus; Ünsal, Ismail; Sviridov, Alexander; et al. (2021)
    Production Engineering - Research and Development
    Efficient lightweight solutions are of great interest in many industries (aviation, automotive) particularly regarding the limitation of CO2-emissions and material waste. An innovative strategy to address these challenges is the use of hybrid manufacturing. Additive manufacturing (laser metal deposition, LMD) and conventional forming methods (hole-flanging) are used to optimize and functionalize AA 6016 sheet metal parts, which are widely used in the manufacturing of car body parts. First of all, the effects of the additive reinforcements on the mechanical and microstructural properties are investigated using tensile and microstructural tests. After manufacturing reinforced blanks and performing subsequent forming operations, the parts are investigated regarding damages and functionalized through threading. This allows the application of a bolt connection, which is tested through rip-off tests to evaluate the effect of the reinforcements on the fracture forces. It can be shown, that reinforcements can be manufactured without defects and virtually no porosity and the formability is only slightly reduced compared to conventional materials. At the same time, the performance of the reinforced bolt joint can be enhanced while the increase in weight can be limited to relatively small amounts.
  • Temperature and wear analysis in milling of aerospace grade aluminum alloy Al-7050
    Item type: Journal Article
    Bugdayci, Bircan; Lazoglu, Ismail (2015)
    Production Engineering - Research and Development
  • Design and manufacturing of high-performance prostheses with additive manufacturing and fiber-reinforced polymers
    Item type: Journal Article
    Türk, Daniel-Alexander; Einarsson, Halldór; Lecomte, Christophe; et al. (2018)
    Production Engineering - Research and Development
Publications 1 - 5 of 5