23 citations · 47 across the 11 of their papers we have counts for
11 papers
Defect dependent dynamic nanoindentation hardness of copper up to 25 000 s-1
Hendrik Holz, Lalith Kumar Bhaskar, Tobias Brink +4
Metals exhibit an upturn in strength at strain rates of approximately 1000 s-1 - 3000 s-1, governed by rapid dislocation multiplication, interactions and storage. This phenomenon i…
Revealing the Atomic-Scale Structure of the Copper Sulfuric Acid Interface
Lalith Kumar Bhaskar, Sung-Gyu Kang, Oliver R. Waszkiewicz +7
Corrosion originates from atomistic reactions occurring at dynamic solid liquid interfaces however, direct experimental observation of these reactions has remained elusive due to t…
Filling a gap in materials mechanics: Nanoindentation at high constant strain rates upto
Lalith Kumar Bhaskar, Dipali Sonawane, Hendrik Holz +12
A central focus in high strain rate research is understanding the dynamic behavior of materials at strain rates where a strength upturn is observed. While strength upturns at strai…
Micromechanics reveal strain rate dependent transition between dislocation mechanisms in a dual phase high entropy alloy
Szilvia Kalácska, Amit Sharma, Rajaprakash Ramachandramoorthy +8
An equimolar NiCoFeCrGa high entropy alloy having dual-phase homogeneous components was studied, where the constituent phases exhibit distinct mechanical properties. Micropillars w…
Probing Elastic Isotropy in Entropy Stabilized Transition Metal Oxides: Experimental Estimation of Single Crystal Elastic Constants from Polycrystalline Materials
Lalith Kumar Bhaskar, Niraja Moharana, Hendrik Holz +3
Single Crystal Elastic Constants (SECs) are pivotal for understanding material deformation, validating interatomic potentials, and enabling crucial material simulations. The entrop…
High Strain Rate Compressive Deformation Behavior of Nickel Microparticles
Bárbara Bellón, Lalith Kumar Bhaskar, Tobias Brink +5
Understanding the mechanical properties of metals at extreme conditions is essential for the advancement of miniaturized technologies. As dimensions decrease, materials will experi…
Improving reconstructions in nanotomography for homogeneous materials via mathematical optimization
Sebastian Kreuz, Benjamin Apeleo Zubiri, Silvan Englisch +5
Compressed sensing is an image reconstruction technique to achieve high-quality results from limited amount of data. In order to achieve this, it utilizes prior knowledge about the…
Fabrication and extreme micromechanics of additive metal microarchitectures
Sung-Gyu Kang, Barbara Bellon, Lalithkumar Bhaskar +14
The mechanical performance of metallic metamaterials with 3-dimensional solid frames is typically a combination of the geometrical effect ("architecture") and the characteristic si…
Green laser powder bed fusion based fabrication and rate-dependent mechanical properties of copper lattices
Sung-Gyu Kang, Ramil Gainov, Daniel Heußen +5
Lattice structures composed of periodic solid frames and pores can be utilized in energy absorption applications due to their high specific strength and large deformation. However,…
Anomalous High Strain Rate Compressive Behavior of Additively Manufactured Copper Micropillars
Rajaprakash Ramachandramoorthy, Szilvia Kalácska, Gabriel Poras +7
Microscale dynamic testing is vital to the understanding of material behavior at application relevant strain rates. However, despite two decades of intense micromechanics research,…
Micropillar compression of single crystal tungsten carbide, Part 1: temperature and orientation dependence of deformation behaviour
Helen Jones, Vivian Tong, Rajaprakash Ramachandramoorthy +3
Tungsten carbide cobalt hardmetals are commonly used as cutting tools subject to high operation temperature and pressures, where the mechanical performance of the tungsten carbide…