% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@PHDTHESIS{Olivier:977989,
author = {Olivier, Marcel Christoph},
othercontributors = {Bergs, Thomas and Klocke, Fritz},
title = {{A}btragmechanismen beim drahtfunkenerosiven {B}earbeiten
elektrisch leitfähiger {K}eramiken im
kohlenwasserstoffbasierten {D}ielektrikum; 1. {A}uflage},
volume = {2024,4},
school = {RWTH Aachen University},
type = {Dissertation},
address = {Aachen},
publisher = {Apprimus Verlag},
reportid = {RWTH-2024-01047},
isbn = {978-3-98555-200-9},
series = {Ergebnisse aus der Produktionstechnik},
pages = {1 Online-Ressource : Illustrationen},
year = {2024},
note = {Druckausgabe: 2024. - Auch veröffentlicht auf dem
Publikationsserver der RWTH Aachen University; Dissertation,
RWTH Aachen University, 2023},
abstract = {Due to the thermo-physical principle of wire electrical
discharge machining, the material removal is force-free,
which enables the production of filigree structures in
highstrength materials. The thermal input caused by the
electrical discharges alters the surface integrity of the
workpiece, which also affects the component
functionality.These interactions have been extensively
analyzed for metallic materials. The influence of the
material on process productivity and stability is also
understood. For ceramic materials, which are used in various
fields due to their outstanding mechanical and thermal
properties, the only known fact is that different removal
mechanisms existin water-based dielectric depending on the
ceramic type. So far, for machining in hydrocarbon-based
(CH-based) dielectrics, it is not known which removal
mechanisms are present in ceramics and which influence they
have on the resulting surface integrity as well as on the
process conditions. In addition, there are no erosion
technologiesthat enable the machining of different ceramics.
The present work addresses this problem by establishing the
central research hypothesis that the classification of
electrically conductive ceramics based on the dominant
erosion mechanisms enables an economical design of the wire
electrical discharge machining process in CH-based
dielectrics. For this purpose, three different ceramics were
processed in an extensive parameter study and the resulting
surface integrity was analyzed. For a more profound
understanding of the removal mechanisms, additional single
discharge experiments were carried out. Furthermore, removal
particles were extracted from the continuous process to
create a particle size distribution, which was correlated
with the determined productivity and stability values.
Bending strength studies were performed to investigate the
influence of both different energy levels and
ceramic-specific trim cutting on the strength. On the one
hand, the knowledge generated was used to develop a
simulation model that will estimate the rim zone damage.
Secondly, the results were used to classify the wire
electrical discharge machinability of electrically
conductive ceramics based on the dominant removal
mechanisms. This classification can be used, for instance,
to select a basic technology for an automated optimization
software, which was developed within the scope of this work
using an evolutionary algorithm.},
cin = {417410 / 417400},
ddc = {620},
cid = {$I:(DE-82)417410_20140620$ / $I:(DE-82)417400_20240301$},
pnm = {DFG project 283180766 - Werkstoffbasierte
Grundlagenuntersuchungen zur Erweiterung des Verständnisses
der Erodierbarkeit von elektrisch leitfähigen Keramiken mit
oxidischer Matrix (283180766)},
pid = {G:(GEPRIS)283180766},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
doi = {10.18154/RWTH-2024-01047},
url = {https://publications.rwth-aachen.de/record/977989},
}
guest ::