Subproject B: Alternative Resources and Resource Efficiency

Project area B combines the subprojects that deal with issues concerning future resources for materials, and how these resources can be utilized optimally and effectively. It does so while taking human and societal aspects into account. In particular, materials based in renewable resources are focused on in the materials research. The aim is to modify these materials into actual alternatives for conventional materials that consist os finite resources. This is to be done while paying special attention to societal aspects, since technical properties are not the only properties to substantially influence the utilization of a material. The acceptance of a material in society can influence its utilization due to ethical concerns or legal and political framework conditions. An additional aspect that is of importance when taking the desired safety and reliability into account is the recycling of materials, and its influence on the material behavior. This problem is discussed in the individual subprojects using model materials.

Subproject B2: Characterization of Biocomposite Materials for the Simulation of Mechanical Properties

  • Dr. Maik Feldmann
  • Dipl.-Ing. Jan-Christoph Zarges
  • Participating Subproject(s): B1, C1, C2, C3              
  • Associated Partners: Prof. Dr. M. Weissenberger-Eibl / Prof. Dr. H.-P. Fink

The utilization of renewable reinforcement fibres, i.e., hemp, jute, and cellulose regenerate fibers, is of consistently increasing importance owing to the growing level of environmental awareness. At present, it is already possible to achieve the property level of a glass fiber reinforced material. The natural fibers strongly differ from conventional reinforcement fibers in terms of their structures and properties. >>more

Subproject B3: The Influence of the Geometry of Biogenic Filling Materials

  • Prof. Dr. Hans-Peter Heim
  • Dipl.-Ing. Philipp Sälzer
  • Participating Subproject(s): A1, B1, B4, C2, C3, C4
  • Associated Partners:  Prof. Dr. M. Weissenberger-Eibl/Prof. Dr. H.-P. Fink

Filling and reinforcement materials made from renewable raw materials offer versatile application options in plastics technology. In contrast to synthetic filling materials, they do not display consistent properties, and vary depending on the year they were harvested, the area they were cultivated in, and their type. When combining these factors with the varying processing parameters, the significant level of influence that the mechanical properties of the later component are subject to becomes apparent.

This subproject aims to examine the correlations between the particle geometry of biogenic materials and the mechanical properties of the composite. Polypropylene was selected as the matrix material, and was compounded with filling materials, such as wood flour.  Specific blends with varying average particle sizes will be created and examined by fractioning the filling materials by size prior to compounding. The filling materials obtained from varying plant sources and varying regions of cultivation will then be processed with varying processing parameters.

The influences of man on the properties of biogenic filling materials are to be determined, and a model for the simulation of the influence of varying particle geometries will be designed in collaboration with other subprojects. The aim of examinations performed in this subproject is to enable us to make a precise statement about the material behavior, and, thus, to allow us to make a contribution to safe and reliable materials. >>more

Subproject B4: Simulation of Man in Regards to the Issue of “Safe and Reliable Materials”

  • Prof. Dr. Oliver Sträter
  • Participating Subproject(s): A1, A3, A4, B2, B3, B5, C2

In order to counteract the development of defects early on, a proactive assistance system is currently being developed, which is capable of recognizing the potential of human performance and its limits based on the reactive method developed in subproject A1. The development of defects is inhibited by the notices and warnings provided by the assistance system. >>more

Subproject B5: Aluminum Cast Materials: Safe Materials despite Recycling

  • Prof. Dr. Angelika Brückner-Foit
  • Participating Subproject(s): A1, A2, A4, B4, C2, C3
  • Associated Partners: Prof. Dr. Martin Fehlbier

Aluminum cast components have been an essential element in modern lightweight automobile construction, and have had portfolio shares that have been rising for years. They have increasingly been replacing multi-component steel constructions. This also means that the materials must take over supporting functions despite having worse mechanical properties. Therefore, it is impertinent to ensure that lightweight construction does not come at the cost of safety and reliability. >>more