Benjamin Bergmann
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View article: Influence of the interlayer and the substrate on the wear behavior of PVD tool coatings during turning of C60+N
Influence of the interlayer and the substrate on the wear behavior of PVD tool coatings during turning of C60+N Open
View article: Effect of a Ti interlayer on TiN thin films grown on glass substrates as surrogates for PVD-coated natural rocks
Effect of a Ti interlayer on TiN thin films grown on glass substrates as surrogates for PVD-coated natural rocks Open
View article: Investigation of local tribological conditions in the secondary shear zone for dry and wet machining using a microscale simulation model
Investigation of local tribological conditions in the secondary shear zone for dry and wet machining using a microscale simulation model Open
This study presents a microscale tribological simulation model to investigate local friction conditions in the secondary shear zone during both dry and wet machining. The precise characterization of tool-chip interactions, particularly the…
View article: Impact of microstructure and heat treatment on chip formation of Ti-5553 processed by laser powder bed fusion
Impact of microstructure and heat treatment on chip formation of Ti-5553 processed by laser powder bed fusion Open
Titanium alloys are widely employed in high-performance applications such as aerospace components and medical implants. Thereby, advances in additive manufacturing (AM) have promoted the use of AM-produced Ti-based parts, which offer new p…
View article: Enhancing Performance of Metal-Bonded Diamond Grinding Wheels for Machining Cemented Carbides through Graphite and Chromium Additions
Enhancing Performance of Metal-Bonded Diamond Grinding Wheels for Machining Cemented Carbides through Graphite and Chromium Additions Open
View article: Influence of cooling lubricants on mechanical load at the cutting wedge using high-speed microcinematography and an open-contra rotation tribometer
Influence of cooling lubricants on mechanical load at the cutting wedge using high-speed microcinematography and an open-contra rotation tribometer Open
View article: Effect of Bond Hardness of Additively Manufactured Grinding Tool Bonds on Material Removal Efficiency during Single-Grain Cutting
Effect of Bond Hardness of Additively Manufactured Grinding Tool Bonds on Material Removal Efficiency during Single-Grain Cutting Open
In order to gain insight into the material removal mechanism of abrasive machining processes, single-grain cutting is a useful and widely adopted technique. In most of the works on this subject, the single abrasive grains are bonded to a s…
View article: Gratbildung beim 5-Achs-Fräsen/Burr formation during 5-axis end milling
Gratbildung beim 5-Achs-Fräsen/Burr formation during 5-axis end milling Open
Im Werkzeug- und Formenbau spielen komplexe Bauteile mit Freiformflächen eine zentrale Rolle, die meist durch spanende Fertigungsverfahren, insbesondere das 5-Achs-Fräsen, hergestellt werden. Sphärische Werkzeuge, wie beispielsweise Kugelk…
View article: Tool failure: a method for stress calculation of worn cutting tools
Tool failure: a method for stress calculation of worn cutting tools Open
View article: Effect of a Ti Interlayer on Tin Thin Films Grown on Glass Substrates as Surrogates for Pvd-Coated Natural Rocks
Effect of a Ti Interlayer on Tin Thin Films Grown on Glass Substrates as Surrogates for Pvd-Coated Natural Rocks Open
View article: Influence of the use of an adhesive connection on the joint strength of modular hip endoprostheses
Influence of the use of an adhesive connection on the joint strength of modular hip endoprostheses Open
Introduction Modular hip implants enables a more precise adaptation of the prosthesis to the patient’s anatomy. However, they also carry the risk of increased revision rates due to micromotion at the taper junction. In order to minimize th…
View article: Physical-Vapor-Deposition-Coated Natural Rocks as Sustainable Cutting Material: First Insights into the Effect of Substrate Integrity on Properties of TiN Thin Film
Physical-Vapor-Deposition-Coated Natural Rocks as Sustainable Cutting Material: First Insights into the Effect of Substrate Integrity on Properties of TiN Thin Film Open
The most important cutting materials for machining are carbides. Their production requires both tungsten and cobalt; however, these materials are becoming increasingly difficult to obtain and are sometimes mined under ethically questionabl…
View article: Influence of the thickness of TiAlSiN on the thermal properties as input parameter for FEM-simulation
Influence of the thickness of TiAlSiN on the thermal properties as input parameter for FEM-simulation Open
View article: Influence of the process parameters on the microstructure and the machinability of additively manufactured Ti-5553 titanium alloy
Influence of the process parameters on the microstructure and the machinability of additively manufactured Ti-5553 titanium alloy Open
View article: Fundamental characterization of lubrication effects through various cooling lubricants in the chip formation zone
Fundamental characterization of lubrication effects through various cooling lubricants in the chip formation zone Open
Using cooling lubricants in metalworking requires a high consumption of energy and resources. However, cooling lubricants serve to increase the productivity and quality of these processes. Accordingly, it is necessary to expand the efficie…
View article: Design and Fabrication of 3D‐Printed Lab‐On‐A‐Chip Devices for Fiber‐Based Optical Chromatography and Sorting
Design and Fabrication of 3D‐Printed Lab‐On‐A‐Chip Devices for Fiber‐Based Optical Chromatography and Sorting Open
Microfluidic lab‐on‐a‐chip (LOC) devices have become essential tools for multitudes of applications in various research fields. 3D printing of microfluidic LOC devices offers many advantages over more traditional manufacturing processes, i…
View article: Influence of chip breaker geometries on chip breaking behaviour during profile grooving
Influence of chip breaker geometries on chip breaking behaviour during profile grooving Open
Chip breakers are used in turning to improve chip breakage. In standard cutting inserts, they are pressed into the rake face before sintering. However, for specialized tools like profile grooving tools, this pressing is not possible. Inste…
View article: Influence of grain concentrations gradients on the profiling behaviour of bronze bonded diamond grinding wheels
Influence of grain concentrations gradients on the profiling behaviour of bronze bonded diamond grinding wheels Open
In this work, diamond grinding wheels are first manufactured with two different metallic bonds. These are a ductile and a brittle bronze. Two differently graded (varied grain concentration) grinding wheels and two non-graded reference grin…
View article: Surface optimization of trapezoidal thread spindles—tribological analysis and application
Surface optimization of trapezoidal thread spindles—tribological analysis and application Open
Trapezoidal threaded spindles are ideal for supporting heavy loads and are therefore frequently used in heavy-duty lifting systems. Both the forming thread rolling process and the machining thread whirling process can be used to manufactur…
View article: Influence of the preparation processes on the residual stresses in PCD and PcBN tools
Influence of the preparation processes on the residual stresses in PCD and PcBN tools Open
Ultra-hard cutting materials such as polycrystalline diamond (PCD) and cubic boron nitride (PcBN) are increasingly being used as cutting tools in machining. The finishing of cutting tools is challenging due to their mechanical and thermal …
View article: Review of current best-practices in machinability evaluation and understanding for improving machining performance
Review of current best-practices in machinability evaluation and understanding for improving machining performance Open
View article: Evaluating the Tribological Behaviour in Cutting Operations Using a Modified Ball-on-Disc Open Tribotester
Evaluating the Tribological Behaviour in Cutting Operations Using a Modified Ball-on-Disc Open Tribotester Open
Predicting the tribological behaviour in the secondary shear zone in the metal-cutting processes is considered a significant challenge in contemporary research. This work investigated the frictional performance in the secondary shear zone …
View article: Mechanical influence on the chip formation in wet metal cutting
Mechanical influence on the chip formation in wet metal cutting Open
Cooling lubricants (CL) are used in various machining processes. In addition to the heat dissipation, influencing the tribological system during metal cutting is a key function. In particular, the thermomechanical load on the cutting wedge…
View article: Influence of manufacturing-related deviations on the junction strength of double modular hip endoprostheses
Influence of manufacturing-related deviations on the junction strength of double modular hip endoprostheses Open
View article: Numerical Simulation Approach of Deep Rolling of AISI 52100 at Elevated Temperature
Numerical Simulation Approach of Deep Rolling of AISI 52100 at Elevated Temperature Open
Hard turn rolling is a hybrid manufacturing process that affects the surface integrity of hardened components, aiming to enhance the lifespan of components such as rolling bearings. Hard turn rolling combines the thermal influence of hard …
View article: Influence of process parameters on machining of extruded and additive produced green carbide blanks
Influence of process parameters on machining of extruded and additive produced green carbide blanks Open
View article: Fatigue life analysis of deep rolled bearing inner rings
Fatigue life analysis of deep rolled bearing inner rings Open
View article: Investigation of the Local Friction Behavior in the Secondary Shear Zone by Coupling of Chip Formation and Microscale Contact Simulation
Investigation of the Local Friction Behavior in the Secondary Shear Zone by Coupling of Chip Formation and Microscale Contact Simulation Open
View article: Simulative surface topography prediction of tribological surfaces on whirled thread flanks
Simulative surface topography prediction of tribological surfaces on whirled thread flanks Open
View article: Study of the effect of oxygen level on tool wear in machining Ti-6Al-4V
Study of the effect of oxygen level on tool wear in machining Ti-6Al-4V Open
During machining, tools and workpieces are exposed to high thermomechanical loads. Consequently, it is known that oxidation wear is determined by the choice of tool and workpiece combination. However, machining in an oxygen-free atmosphere…