Alexander Wanner

ORCID: 0000-0002-3953-7513
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About
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Research Areas
  • Aluminum Alloys Composites Properties
  • Advanced ceramic materials synthesis
  • Metal and Thin Film Mechanics
  • Advanced Surface Polishing Techniques
  • Advanced materials and composites
  • Advanced machining processes and optimization
  • Intermetallics and Advanced Alloy Properties
  • Composite Material Mechanics
  • Aluminum Alloy Microstructure Properties
  • Material Properties and Applications
  • Mechanical Behavior of Composites
  • Microstructure and mechanical properties
  • Metal Forming Simulation Techniques
  • Metal Alloys Wear and Properties
  • High-Velocity Impact and Material Behavior
  • Education Methods and Technologies
  • Innovations in Concrete and Construction Materials
  • Fiber-reinforced polymer composites
  • Surface Treatment and Residual Stress
  • Advanced Welding Techniques Analysis
  • High Entropy Alloys Studies
  • Cellular and Composite Structures
  • Powder Metallurgy Techniques and Materials
  • Microstructure and Mechanical Properties of Steels
  • Copper Interconnects and Reliability

Karlsruhe Institute of Technology
2010-2022

Leibniz University Hannover
2020

John Wiley & Sons (United States)
2013

Siddhartha University
2011

Applied Materials (Germany)
2011

University of Stuttgart
1997-2008

Karlsruhe University of Education
2008

Max Planck Institute for Intelligent Systems
1999-2005

Max Planck Society
1994-2005

Mannesmann (Germany)
2000

Here we introduce a new concept for x-ray computed tomography that yields information about the local micro-morphology and its orientation in each voxel of reconstructed 3D tomogram. Contrary to conventional CT, which only reconstructs single scalar value point image, our approach provides full scattering tensor with multiple independent structural parameters volume element. In application example shown this study, highlight method can visualize sub-pixel fiber orientations carbon composite...

10.1209/0295-5075/105/38002 article EN EPL (Europhysics Letters) 2014-02-01

Brittle fracture usually proceeds at crack driving forces which are larger than those needed to create the new surfaces. This surplus can lead faster propagation or onset of additional dissipation mechanisms. Dynamic experiments on silicon single crystals reported here show several distinct transitions between different Cleavage is followed by a faceted front, finally path instability and multiple cracks. The surface qualitatively corresponds mirror, mist, hackle morphology amorphous...

10.1103/physrevlett.85.788 article EN Physical Review Letters 2000-07-24

The mechanical properties of metallic thin films on the nanoscale acquire increasingly more importance as applications in microelectromechanical systems/NEMS well microelectronics have reached this size scale. Here, we present a synchrotron x-ray diffraction technique by which it is possible to characterize evolution stress film thinner than 100 nm at measurement times shorter 60 s per data point. This high acquisition rate achieved because no relative motions or tilting specimen, source and...

10.1063/1.1669124 article EN Review of Scientific Instruments 2004-03-20

Freeze casting offers a new technique to fabricate ceramic preforms for metal/ceramic composites. Internal load transfer under external compressive loading in such composites has been studied the first time using energy dispersive synchrotron X-ray diffraction. The results show that takes place from soft metallic alloy hard which explained light of generalized Hooke's law and classical laminate theory.

10.1002/adem.200800352 article EN Advanced Engineering Materials 2009-05-12

Silicon carbide reinforced aluminum alloy matrix composites offer excellent thermo‐mechanical properties and are thus attractive for applications limited by thermal stresses. Open porous silicon preforms fabricated in this work using polymer wax as pore formers. Two different waxes with particle size were used to fabricate structures. Wax content was varied introduce open porosities up 64 vol%. Structural characterization carried out scanning electron microscopy micro computed tomography,...

10.1111/j.1551-2916.2012.05347.x article EN Journal of the American Ceramic Society 2012-07-16

10.1002/1521-396x(199711)164:1<r5::aid-pssa99995>3.0.co;2-k article EN physica status solidi (a) 1997-11-01

Arrays of elastic pillars are used in biophysical experiments as sensors for traction forces. The evaluation the forces can be complicated if they coupled to pillar displacements over large distances. This is case many interconnected by linkages as, example, fiber networks that grown on top pillars. To calculate such a network, we developed set nonlinear inhomogeneous equations relating linking elements resulting deflections. We chose homogeneous, activated two-dimensional network...

10.1002/cphc.200500109 article EN ChemPhysChem 2005-08-04
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