Th. Lehmann

ORCID: 0000-0003-4611-0638
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About
Contact & Profiles
Research Areas
  • Elasticity and Material Modeling
  • Metal Forming Simulation Techniques
  • Engineering and Materials Science Studies
  • Elasticity and Wave Propagation
  • High-Velocity Impact and Material Behavior
  • Metallurgy and Material Forming
  • Civil and Structural Engineering Research
  • Composite Material Mechanics
  • Advanced Theoretical and Applied Studies in Material Sciences and Geometry
  • Tribology and Lubrication Engineering
  • Composite Structure Analysis and Optimization
  • Induction Heating and Inverter Technology
  • Physics and Engineering Research Articles
  • Power Transformer Diagnostics and Insulation
  • Geotechnical and Geomechanical Engineering
  • Structural Analysis of Composite Materials
  • Magnetic Properties and Applications
  • Magnetic Field Sensors Techniques
  • Advanced Combustion Engine Technologies
  • Electric Motor Design and Analysis
  • Fatigue and fracture mechanics
  • Material Properties and Failure Mechanisms
  • Electric Power Systems and Control
  • Phenomenology and Existential Philosophy
  • Metal Alloys Wear and Properties

RWTH Aachen University
2024

Leipzig University
2015

Ruhr University Bochum
1982-1993

Friedrich Schiller University Jena
1989

International Centre for Mechanical Sciences
1984

Springer Nature (Germany)
1984

Leibniz University Hannover
1961-1966

Ammonia (NH3) stands as a pivotal player in the global shift towards carbon-free energy systems. Reliable chemical kinetic models are crucial for advancements NH3-based combustion technologies. Despite existence of quite large number individual models, their validations occur under different, and most often, limited sets conditions predominantly based on graphical comparisons with experimental data. This study performs comprehensive quantitative assessment 16 recent an extensive database...

10.1016/j.combustflame.2024.113560 article EN cc-by Combustion and Flame 2024-07-03

10.1007/bf02096162 article DE Rheologica Acta 1964-09-01

We present a new method to obtain topological insulator Bi2Se3 thin films with centimeter large lateral length. To produce amorphous films, we have used sequential flash-evaporation at room temperature. Transmission electron microscopy has been verify that the prepared samples are in pure state. During annealing, transform into rhombohedral crystalline structure which was confirmed using X-ray diffraction and Raman spectroscopy. Resistance measurements of show expected Mott variable range...

10.1063/1.4908007 article EN Journal of Applied Physics 2015-02-17

10.1016/0749-6419(91)90006-k article EN International Journal of Plasticity 1991-01-01

10.1016/0749-6419(85)90028-2 article EN International Journal of Plasticity 1985-01-01

Abstract In this paper a certain generalization of the concept conjugate stress and strain is given particularly with respect to measures Eulerian type. According interpretation logarithmic V determined.

10.1002/zamm.19930731204 article EN ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 1993-01-01

In this note, the question of effect assuming infinite permeability in iron on accuracy calculations interpolar fields electric machines is studied. One can do very easily by replacing saturated non-saturated poles, covered an infinitely thin sheet current giving same tangential component field along surface iron. The produced current, then, represents difference between exterior circuit and circuit. addition to indirect method estimating influence saturation, sketch poles air-gap also be...

10.1109/t-aiee.1928.5054984 article EN Transactions of the American Institute of Electrical Engineers 1928-01-01

10.1016/0020-7225(82)90023-4 article EN International Journal of Engineering Science 1982-01-01

The present paper treats of the following matters: 1. Simplification physical formula for magnetic attraction, 2. Definition reluctance when field is bounded by non-equipotential surfaces, 3. Calculation virtual variation in due to any displacement limiting 4. Demonstration theorem that attraction between two ferromagnetic bodies depends only upon their common fluxes ? and gradient its air-reluctances R o , F l = ?2/8 /? which gives altraction along given direction as general exact formulas...

10.1109/t-aiee.1926.5061231 article EN Transactions of the American Institute of Electrical Engineers 1926-01-01

10.1016/0029-5493(80)90110-7 article EN Nuclear Engineering and Design 1980-05-01

10.1002/zamm.19620420426 article EN ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 1962-01-01
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