Journal ArticleDOI
Simplified Area Function for Sharp Indenter Tips in Depth-sensing Indentation
Jeremy Thurn,Robert F. Cook +1 more
TLDR
In this article, a two-parameter "area function" characterizing the depth-dependent projected area of an indenter was introduced and applied to a Berkovich tip, corresponding to the effective tip radius and effective cone angle.Abstract:
A two-parameter “area function” characterizing the depth-dependent projected area of an indenter was introduced and applied to a Berkovich tip. The two parameters have physical meaning, corresponding to the effective tip radius and effective cone angle. The indenter tip was calibrated on a commercial load-controlled Nano Indentert® XP (MTS Systems Corp., Eden Prairie, MN). All calibrations were carried out using the procedure of Oliver and Pharr [J. Mater. Res. 7, 1564 (1992)] using several homogeneous materials. Plane-strain modulus and hardness values deconvoluted from indentation load–displacement traces using the calibrated two-parameter area function compared well with the values determined using the empirical eight-parameter area function of Oliver and Pharr.read more
Citations
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Journal ArticleDOI
Nanoindentation studies of materials
TL;DR: Nanoindentation has become a commonplace tool for the measurement of mechanical properties at small scales, but may have even greater importance as a technique for experimental studies of fundamental materials physics as discussed by the authors.
Journal ArticleDOI
Review of Instrumented Indentation
TL;DR: An overview of instrumented indentation is given with regard to current instrument technology and analysis methods and research efforts at the National Institute of Standards and Technology aimed at improving the related measurement science are discussed.
Journal ArticleDOI
Nanoindentation and mechanical properties of solids in submicrovolumes, thin near-surface layers, and films: A Review
TL;DR: In this article, a review devoted to the specific mechanical behavior of thin near-surface layers of various solids, materials, films, and multilayer coatings under local loading is presented.
Journal ArticleDOI
Nanoindentation and contact-mode imaging at high temperatures
TL;DR: In this paper, the hardness and Young's modulus of the indenter tip of a standard fused silica at temperatures up to 405 °C were extracted and validated with independent experimental data from conventional mechanical tests.
Journal ArticleDOI
Nanoscale mechanical properties of polymers irradiated by UV
TL;DR: The application of depth sensing nanoindentation to determine mechanical properties of three different polymers was described in this paper using three different techniques to calibrate the measurement system, and the nano-hardness and the elastic indentation modulus of polyvinyl chloride, polyethylene oxide and polyacrylic acid were inferred from nanomechanical tests, and a multicycling test was used to measure changes in the sample viscoelasticity.
References
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Journal ArticleDOI
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more
TL;DR: In this paper, the authors used a Berkovich indenter to determine hardness and elastic modulus from indentation load-displacement data, and showed that the curve of the curve is not linear, even in the initial stages of the unloading process.
Journal ArticleDOI
A method for interpreting the data from depth-sensing indentation instruments
M. F. Doerner,William D. Nix +1 more
TL;DR: In this paper, a method for obtaining hardness and Young's modulus from the data obtained from these types of instruments is described, where the elastic displacements are determined from data obtained during unloading of the indentation.
Journal ArticleDOI
Influences of pileup on the measurement of mechanical properties by load and depth sensing indentation techniques
Alexei Bolshakov,George M. Pharr +1 more
TL;DR: In this article, the authors used finite element simulation of conical indentation of a wide variety of elastic-plastic materials to investigate the influences of pileup on the accuracy with which hardness and elastic modulus can be measured by load and depth-sensing indentation techniques.
Journal ArticleDOI
Effect of phase transformations on the shape of the unloading curve in the nanoindentation of silicon
TL;DR: In this paper, a strong correlation between the shape of the load-displacement curve and the phase transformations occurring within a nanoindentation was reported, which is consistent with the results of high pressure cell experiments.
Journal ArticleDOI
The effect of the indenter load on the nanohardness of ductile metals : an experimental study on polycrystalline work-hardened and annealed oxygen-free copper
Yong Yee Lim,M. Munawar Chaudhri +1 more
TL;DR: In this paper, an experimental investigation of the nanohardness of polycrystalline work-hardened and annealed oxygen-free copper (OFC) for different indenter loads is described.
Related Papers (5)
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more
A method for interpreting the data from depth-sensing indentation instruments
M. F. Doerner,William D. Nix +1 more