A5034871830- Mechanical stress and fatigue analysis
- Fatigue and fracture mechanics
- Microstructure and Mechanical Properties of Steels
- High Temperature Alloys and Creep
- Extraction and Separation Processes
- Electrical Contact Performance and Analysis
- Advancements in Battery Materials
- Metal and Thin Film Mechanics
- Magnetic Properties and Applications
- Metal Alloys Wear and Properties
- Tribology and Wear Analysis
- Machine Fault Diagnosis Techniques
- High-Velocity Impact and Material Behavior
- Advanced Battery Materials and Technologies
- Microstructure and mechanical properties
- Infrastructure Maintenance and Monitoring
- Hydrogen embrittlement and corrosion behaviors in metals
- Electron and X-Ray Spectroscopy Techniques
- Railway Engineering and Dynamics
- Titanium Alloys Microstructure and Properties
- Additive Manufacturing and 3D Printing Technologies
- Photopolymerization techniques and applications
- Innovations in Concrete and Construction Materials
University of Münster
2023-2024
University of Applied Sciences Kaiserslautern
2019-2022
Sichuan University
2019-2022
RWTH Aachen University
2022
Saarland University
2019-2021
Abstract Herein, we conducted tensile and fracture tests on a photopolymer produced with stereolithography apparatus (SLA), utilizing dog‐bone semi‐circular bending specimens fabricated in five different orientations. The analysis revealed direct linear correlation between the strength printing orientation, highlighting decrease an increase orientation angle. Young's modulus of printed material remained insensitive to orientation. Conversely, toughness demonstrated distinct cubic polynomial...
The syntheses of Ni-poor (NCM111, LiNi1/3Co1/3Mn1/3O2) and Ni-rich (NCM811 LiNi0.8Co0.1Mn0.1O2) lithium transition-metal oxides (space group R3̅m) from hydroxide precursors (Ni1/3Co1/3Mn1/3(OH)2, Ni0.8Co0.1Mn0.1(OH)2) are investigated using in situ synchrotron powder diffraction near-edge X-ray absorption fine structure spectroscopy. development the layered these two cathode materials proceeds via utterly different reaction mechanisms. While synthesis NCM811 involves a rock salt-type...
Abstract A nondestructive thermographic methodology is utilized to determine the fracture fatigue entropy for evaluating damage in metals within high‐cycle regime. Thermodynamic shown play an important role process trace as irreversible degradation of a metallic material being subjected cyclic elastic‐plastic loading. This paper presents method evaluate normalized SAE 1045 steel based on concept thermodynamic and its nonlinearities. The procedure looks be applicable constant load increase...
Abstract Coupling effects of fretting wear and cyclic stress could result in significant fatigue strength degradation, thus potentially causing unanticipated catastrophic fractures. The underlying mechanism microstructural evolutions caused by is ambiguous, which obstructs the understanding issues, unable to guarantee reliability structures for long-term operation. Here, studies were performed understand evolution oxidation behavior an α/β titanium alloy up 10 8 cycles. Contact surface...
Abstract The fatigue behavior of a Ni‐based superalloy grade GH4169 has been investigated at room temperature and high (RT HT) up to very cycle regime using ultrasonic electromagnetic systems. experiments reveal that mixed‐mode cracking occurred in the first crack growth stage HT. It was followed by horizontal propagation regardless initial orientation crack. Complex pod‐like structures occur grain after being loaded large number cycles RT. These are induced interaction dislocation movement...
Herein, the mechanical and magnetic behavior of an ultrafine‐grained (UFG) medium manganese (Mn) transformation‐induced plasticity (TRIP) steel is focused on in its plastic instability. The situ methods digital image correlation (DIC) Barkhausen noise (MBN) are used to macroscopically characterize propagation Lüders band (stretcher–strain marks) evolution MBN activities during quasistatic tensile deformation. microstructure instability investigated ex using X‐Ray diffraction (XRD)...
The synthesis of Ni-poor (NCM111, LiNi 1/3 Co Mn O 2 ) and Ni-rich (NCM811 0.8 0.1 lithium transition metal oxides (space group R-3m from hydroxide precursors (Ni (OH) , Ni are investigated with in situ synchrotron powder diffraction (SXPD) near edge x-ray absorption fine structure spectroscopy (NEXAFS). development the layered these two cathode materials proceeds via utterly different reaction mechanisms. While NCM811 involves a rock salt-type intermediate phase, NCM111 reveals throughout...