nanoindentation – TechConnect Briefs

Nano-JKR Method Eliminates Adhesion Errors in Nanoindentation of Compliant Polymers and Hydrogels

Ebenstein D.M., Bucknell University, US

Although nanoindentation (or instrumented indentation) was originally developed for characterization of hard, stiff materials such as metals and silicon, this tool has recently seen increased use with compliant polymers and hydrogels. One challenge associated with [...]

Nanomechanical and Morphological Characterizations of Spark Plasma Sintered WC- 5Co-1Cr-3MgO-0.7VC-0.3Cr3C2 Nanocomposite Powders Prepared by Solid-State Mechanical Mixing Technique

Sherif El-Eskandarany M., Al-Hazza A., Alduweesh A., Kuwait Institute for Scientific Research, US

WC-Co-based composites possess unique and useful properties that make them desirable materials for wide range of industrial applications such as tips for cutting and drilling tools, wear resistant parts in wire drawing, extrusion and pressing [...]

Hertz Elastic Contact in Spherical Nanoindentation Considering Infinitesimal Deformation of Indenter

Kang S.-K., Kim J-Y, Kim Y.-C., Lee Y-H, Kim J-Y, Kim Y.-C., Kwon D., Seoul National University, KR

Many studies have been performed to identify and analyze unusual nano-scale phenomena. Violation of Hertz elastic contact between the spherical nanoindenter and metallic materials has been discussed in previous studies. The unexpected results obtained using [...]

Investigation of Zona Pellucida Hardening with Atomic Force Microscopy and Nonlinear Optimization

Frassanito M.C., Papi M., De Spirito M., Lamberti L., Boccaccio A., Arcovito G., Pappalettere C., Politecnico di Bari, IT

The Zona Pellucida (ZP) is an extracellular membrane surrounding mammalian oocytes. The so called “zona hardening” has a key role in the fertilization process as it produces a block of polyspermy also through an increase [...]

Mechanical properties of PECVD Si3N4 thin films with rapid thermal annealing using finite element simulation

Chiang C-Y, Huang Z-K, Chen K.-S., National Cheng Kung University, TW

The entire study includes Si3N4 specimen fabrication, material and mechanical characterization, a new physical model derivation, as well as the corresponding finite element analysis (FEA) and simulations. Nevertheless, the standard method used for nanoindentation were [...]

Correlation between the oxygen content and the structure of AlCrSiOxN(1-x) thin films deposited by pulsed DC magnetron sputtering

Najafi H., Karimi A., Morstein M., Najafi H., Ecole Polytechnique Fédérale de Lausanne, CH

Due to their good mechanical properties as well as high temperature oxidation resistance, multi element oxynitride thin films have attracted more attention for applications in cutting and forming tools. Nanocomposite coatings represent a new generation [...]

Application of nanoindentation for constituent phases testing

Hussainova I., Jasiuk I., Tallinn University of Technology, EE

Development of advanced composites requires a detailed knowledge of their constituents’ properties as they are often somewhat different from the materials at their bulk form. In the present study, the nanoindentation techniques of two different [...]

Nanomechanical characterization of UV curable hyperbranched polymers

Kim J., Chen Z., Chisholm B., Patel S., North Dakota State University, US

Hyperbranched polymers were explored to develop UV-curable, protective coatings for aluminum 2024-T3 and their viscoelastic and mechanical properties were characterized using nanoindentation techniques. The coating system consists of a hyperbranched polyester acrylate (CN2300, Sartomer Inc), [...]

Mechanical characterization of electrostatic MEMS switches

Souchon F., Koszewski A., Levy D., Charvet PL., CEA/LETI/MINATEC, FR

The paper presents a methodology with nanoindentation experiments to characterize the mechanical properties of MEMS switches. After that, simple analytical models for mechanical and electrostatic aspects are used to validate these mechanical characterizations. At the [...]

Application of Abductive Network and FEM to Predict the Stress-Strain Curve with strain hardening effect of Bulk Metals by Nanoindentation test

Yang T.S., Qiu J.Z., Chang S.Y., National Formosa University, TW

Finite element method (FEM) has been widely used for numerical simulation of indentation tests on bulk material in order to analyze its deformation response and investigate the influence of indenter geometry, friction and material elastic [...]