Fraunhofer-Publica

The Fraunhofer-Publica has been successfully documenting the research results of the Fraunhofer-Gesellschaft for over 30 years. The platform enables the collaborative linking of research-relevant objects and disseminates within the international scientific community.

The Fraunhofer-Publica thus fulfils its responsibility to promote the transfer of knowledge and know-how to industry and society.

Categories

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Research outputs

As an application-oriented research organisation, Fraunhofer aims to conduct highly innovative and solution-oriented research - for the benefit of society and to strengthen the German and European economy.

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Projects

Fraunhofer is tackling the current challenges facing industry head on. By pooling their expertise and involving industrial partners at an early stage, the Fraunhofer Institutes involved in the projects aim to turn original scientific ideas into marketable products as quickly as possible.

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Researchers

Scientific achievement and practical relevance are not opposites - at Fraunhofer they are mutually dependent. Thanks to the close organisational links between Fraunhofer Institutes and universities, science at Fraunhofer is conducted at an internationally first-class level.

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Institutes

The Fraunhofer-Gesellschaft is the leading organisation for applied research in Europe. Institutes and research facilities work under its umbrella at various locations throughout Germany.

Recent Additions

  • Publication
    Characterization and simulation of the interface between a continuous and discontinuous carbon fiber reinforced thermoplastic by using the climbing drum peel test considering humidity
    ( 2024)
    Christ, Nicolas
    ;
    Scheuring, Benedikt M.
    ;
    Schelleis, Christoph orcid-logo
    ;
    Liebig, Wilfried V.
    ;
    Montesano, John
    ;
    Weidenmann, Kay A.
    ;
    Hohe, Jörg
    The objective of this paper is to investigate the debonding behavior of the interface between continuously and discontinuously fiber reinforced thermoplastics using the climbing drum peel test. The study emphasizes on the importance of considering different climatic boundary conditions on the properties of thermoplastics. Specimens with varying moisture contents, from 0m.% up to above 6m.% are prepared and tested. It is observed that an increase in moisture content from 0m.% to 2m.% results in an increase of the fracture surface energy from 1.07·103J/m2 to 2.40·103J/m2 required to separate the two materials, but a further increase in moisture to 6.35m.% conversely results in a subsequent decrease of the required energy to 1.91·103J/m2. The study presents an explanatory model of increasing plasticization of the polymer due to increased polymer chain mobility, which results in more deformation energy being required to propagate the crack, which is corroborated in SEM investigations of the fracture surface. A further increase in humidity leads to polymer degradation due to hydrolysis, which explains the subsequent reduction of the fracture energy. The experimental set up is modeled numerically for the first time with cohesive surfaces, which could successfully reproduce the effective force-displacement curve in the experiment by varying the interface parameters in the model over an influence length, allowing the conclusion of a process induced variation in the interface properties over a specific consolidation length.
  • Publication
    Influence of red mud as a catalyst in the thermocatalytic reforming process
    ( 2024-05-01)
    Onyishi, Hillary Onyebuchi
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    Neidel, Johannes
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    Daschner, Robert
    ;
    Apfelbacher, Andreas
    ;
    Hornung, Andreas orcid-logo
    This work studies red mud, a residue from the processing of bauxite, as a support catalyst in the thermocatalytic reforming (TCR) process, using wood, digestate, and straw as case studies. Thermocatalytic reforming is a thermochemical process for the conversion of biomass into biofuels, combining intermediate pyrolysis and catalytic reforming and resulting in high‐quality biofuels. The quantity and quality of the catalyst in the postreformer is vital as it influences the reactions taking place in it. Normally, nonreactive components of the char produced in the process act as the catalyst in the postreformer but adding a support catalyst may improve the products. In this work, red mud is introduced in the process by mixing it with the feedstock in a ratio of 1:3. The results, in comparison with normal TCR experiments on the same feedstock materials, show that the introduction of red mud into the process generally reduces the biochar yield and generally increases the biogas and product water yields, and the bio‐oil yield remains constant. Its introduction also increases the hydrogen fraction of the gas and tends to reduce the nitrogen and sulfur content of the products, thus improving their quality. These observations are consistent across feedstock materials and postreformer temperatures. The results therefore suggest that red mud is a good support catalyst for increasing the gas yield, increasing the hydrogen fraction of the gas, and improving the quality of the products from the TCR process.

Most viewed

  • Publication
    Chip array electrodes for simultaneous stripping analysis of trace metals
    ( 1995)
    Uhlig, A.
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    Paeschke, M.
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    Schnakenberg, U.
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    Lisec, T.
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    Hintsche, R.
  • Research Project
    01IN509B/5
  • Publication
    Production Planning and Control within Supply Chains
    ( 1996)
    Arnold, J.
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    Dudenhausen, H.-M.
    ;
    Halmosi, H.
    A high degree of both complexity and uncertainty within supply chains make production planning and control difficult. Nowadays, several Production Planning and Control Systems try to optimise the supply chain's individual links, called manufacturing sites. Independent systems, i.e. systems which are not connected via networks, are not capable of planning and controlling the complete supply chain efficiently and effectively. The entities of a supply chain vary in market power, purchasing strategies, etc., and this leads to different relationships between them. In order to plan and control the entire supply chain a distributed, networked system is needed which is configurable for all structures within the chain. In this paper a generic and configurable planning and control component is presented with which a system for supply chains can be built modularly. Three case studies accompany the different planning approaches.