Page 24 - ILK Research Report 2020

Contact Person Joining Technologies
Dr.-Ing. Robert Kupfer
+49 351 463 38749
✉ robert.kupfer@tu-dresden.de opment approach. It includes the technological basics, the material-structural
Juliane Troschitz
+49 351 463 38480
✉ juliane.troschitz@tu-dresden.de
Contact Person
Dr.-Ing. Ilja Koch
+49 351 463 38394
✉ ilja.koch@tu-dresden.de
Dr.-Ing. Christoph Ebert
+49 351 463 39636
✉ christoph.ebert@tu-dresden.de
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The Expert Group on Joining Technologies is an interdisciplinary working and
communication platform at the ILK. The aim of the team is to identify the rele-
vant problems in the field of joining technology at an early development stage
especially with regard to multi material design. Based on this, application-ori-
ented joining solutions are identified and investigated scientifically.
Therefore it focusses on two approaches: On the one hand established tech-
no¬logies are modified and applied for specific joining tasks, material com-
binations and load cases. On the other hand novel material-adapted joining
methods are developed, analysed and evaluated concerning the application
potential. The Expert Group pursues a holistic, material-independent devel-
phenomena in joining zones and the modelling of both the joining process
and the load-bearing behaviour.
One research focus are intrinsic joining zones which are formed in hybrid struc-
tures during component manufacture, e. g. when overmoulding laser-struc-
tured or plasma-treated surfaces. Extrinsic joining zones, which enable the
integration of hybrid structures into the system environment, are another
focus, e. g. the new form-fit joining processes thermoclinching and hotclinch-
ing. For the design and dimensioning of joining systems, new methods for the
analysis and description of the local material structure in composite materials
are developed, e. g. for inserts embedded by warm forming.
Testing Methods and Experiments
For the design of lightweight structures and systems, the knowledge and
mathematical description of the process-specific material properties as well
as the deformation, damage and failure processes is essential. Due to the
testing equipment at the ILK, it is possible to comprehensively record the ma-
terial and component characteristics. The characterization can be carried out
starting with the determination of the thermomechanical properties of the
materials, through the analysis of the stiffness and strength properties of the
semi-finished products and substructures, to extremely complex load tests
on structures and systems. For the correct use and further development of
the experimental methods and the implementation of the findings in material
models and validation strategies, the experience and competences are bun-
dled in the specialist group Testing Methods and Material Models.
We thus see ourselves as an open forum for all issues relating to scientific
experimentation and description - from the choice of methodology and sta-
tistical data evaluation to interpretation and mathematical description. In the
area of material models, we therefore concentrate on the elucidation and
description of the process-structure-property relationships of reinforced
and unreinforced materials. In the area of materials and component testing,
we devote ourselves to standardized and specially developed methods of
destructive and non-destructive materials and component testing and meet
the testing challenges of new materials and hybrid functional structures. We
place particular emphasis on structure elucidation and damage detection,
mechanical material characterization and rotor testing.