A5071302704- Advanced machining processes and optimization
- Advanced Surface Polishing Techniques
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- Advanced Machining and Optimization Techniques
- Structural Analysis of Composite Materials
- Laser Material Processing Techniques
- Civil and Structural Engineering Research
- Gear and Bearing Dynamics Analysis
- Engineering and Materials Science Studies
- Surface Treatment and Residual Stress
- Metallurgy and Material Forming
TU Dortmund University
2021-2024
In machining, tool temperatures and thus wear are significantly influenced by frictional behaviour. Friction tests used to determine the friction coefficient depending on relative speed, which serves as basis for parameterising models input data chip formation simulations. Therefore, this paper represents investigations towards behaviour of uncoated coated (TiN, TiAlN) carbide tools when using two different movements (translational rotary) cooling lubricant conditions. dry conditions, show...
The fatigue behavior of components made quenched and tempered steel alloys is elementary importance, especially in the automotive industry. To a great extent, components’ strength influenced by surface integrity properties. For machined components, generated often exposed to highest thermomechanical loads, potentially resulting transformations subsurface microstructure hardness as well residual stress state. While measurement mechanical load using dynamometers established, in-process...
Abstract Sustainability is an increasingly important trend, giving great potential in industrial production to save resources and energy. This paper presents fundamental research results on the reduction of cutting-tool consumption saving workpiece-material. For basis a new wear model, explicit knowledge thermo-mechanical loads relative speeds between tribological partners central importance. Therefore, special open tribometer will be used parameterize friction model depending speeds. Both,...
Die Verfahrenskombination aus Laserpilotieren und Einlippentiefbohren ist ein vielversprechender Ansatz, die Flexibilität bei Tiefbohrbearbeitungen signifikant zu steigern. Mithilfe des Lasersystems es dabei möglich, verschleißfrei Pilotbohrungen auf schrägen, gekrümmten oder sogar randschichtgehärteten Bauteilen erzeugen.
Für die Vorhersage des Werkzeugverschleißes sind neben den Kontaktnormalspannungen und Relativgeschwindigkeiten explizite Kenntnis thermo-mechanischen Belastungskollektives, das im Wesentlichen durch Reibungsverhältnisse zwischen Tribopartnern beschrieben wird, von zentraler Bedeutung. Die vorliegende Studie befasst sich mit der Parametrierung eines Relativgeschwindigkeit abhängigen Reibungsmodells, welches weiteren Projektverlauf einen Teil Datenbasis für Entwicklung Verschleißmodells...
The thermomechanical load on the workpiece surface during machining process strongly influences its integrity and resulting fatigue strength of components. In single-lip drilling, measurement mechanical using dynamometers is well established, but thermal interactions between tool material in area are difficult to determine with conventional test setups. this paper, development implementation an in-process bore subsurface presented. experimental setup includes a two-color ratio pyrometer...
Increasing demands on the performance and design of components resulting requirements for flexibility increasingly require creation bore holes with small diameters high length-to-diameter ratios complex shaped surfaces. Tools implants in medical technology, cooling oil channels turbine construction aviation or injection nozzles automotive industry are just a few examples. Typically, these produced single-lip deep hole drilling tools. Due to asymmetric displacement tools inclined curved...