Bibliografie tematiche / Nanoindentation

Letteratura scientifica selezionata sul tema "Nanoindentation"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 7 luglio 2024

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Articoli di riviste sul tema "Nanoindentation"

1

Jakes, Joseph E., e Donald S. Stone. "Best Practices for Quasistatic Berkovich Nanoindentation of Wood Cell Walls". Forests 12, n. 12 (3 dicembre 2021): 1696. http://dx.doi.org/10.3390/f12121696.

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Abstract (sommario):
For wood and forest products to reach their full potential as structural materials, experimental techniques are needed to measure mechanical properties across all length scales. Nanoindentation is uniquely suited to probe in situ mechanical properties of micrometer-scale features in forest products, such as individual wood cell wall layers and adhesive bondlines. However, wood science researchers most commonly employ traditional nanoindentation methods that were originally developed for testing hard, inorganic materials, such as metals and ceramics. These traditional methods assume that the tested specimen is rigidly supported, homogeneous, and semi-infinite. Large systematic errors may affect the results when these traditional methods are used to test complex polymeric materials, such as wood cell walls. Wood cell walls have a small, finite size, and nanoindentations can be affected by nearby edges. Wood cell walls are also not rigidly supported, and the cellular structure can flex under loading. Additionally, wood cell walls are softer and more prone to surface detection errors than harder inorganic materials. In this paper, nanoindentation methods for performing quasistatic Berkovich nanoindentations, the most commonly applied nanoindentation technique in forest products research, are presented specifically for making more accurate nanoindentation measurements in materials such as wood cell walls. The improved protocols employ multiload nanoindentations and an analysis algorithm to correct and detect errors associated with surface detection errors and structural compliances arising from edges and specimen-scale flexing. The algorithm also diagnoses other potential issues arising from dirty probes, nanoindenter performance or calibration issues, and displacement drift. The efficacy of the methods was demonstrated using nanoindentations in loblolly pine (Pinus taeda) S2 cell wall layers (S2) and compound corner middle lamellae (CCML). The nanoindentations spanned a large range of sizes. The results also provide new guidelines about the minimum size of nanoindentations needed to make reliable nanoindentation measurements in S2 and CCML.
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Mueller, Johannes, Karsten Durst, Dorothea Amberger e Matthias Göken. "Local Investigations of the Mechanical Properties of Ultrafine Grained Metals by Nanoindentations". Materials Science Forum 503-504 (gennaio 2006): 31–36. http://dx.doi.org/10.4028/www.scientific.net/msf.503-504.31.

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The mechanical properties of ultrafine-grained metals processed by equal channel angular pressing is investigated by nanoindentations in comparison with measurements on nanocrystalline nickel with a grain size between 20 and 400 nm produced by pulsed electrodeposition. Besides hardness and Young’s modulus measurements, the nanoindentation method allows also controlled experiments on the strain rate sensitivity, which are discussed in detail in this paper. Nanoindentation measurements can be performed at indentation strain rates between 10-3 s-1 and 0.1 s-1. Nanocrystalline and ultrafine-grained fcc metals as Al and Ni show a significant strain rate sensitivity at room temperature in comparison with conventional grain sized materials. In ultrafine-grained bcc Fe the strain rate sensitivity does not change significantly after severe plastic deformation. Inelastic effects are found during repeated unloading-loading experiments in nanoindentations.
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FANG, TE-HUA, WIN-JIN CHANG, CHAO-MING LIN e CHUN-CHIN CHANG. "CYCLIC NANOINDENTATION OF SEMICONDUCTOR AND METAL THIN FILMS". International Journal of Modern Physics B 23, n. 30 (10 dicembre 2009): 5639–47. http://dx.doi.org/10.1142/s0217979209053643.

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The nanoindentation technique was used to measure the hardness and Young's modulus of semiconductor and metal thin films on a Si(100) substrate under cyclic loading. The results showed that in all instances and at a constant cyclic load that the loading curves overlapped the previous unloading curve and had a small displacement after each cyclic nanoindentation. It was observed that the plastic energies of metal materials from the first loading–unloading cycle were much larger than that observed in semiconductor materials. Furthermore, the hardness and Young's modulus of the thin films decreased when the number of cyclic nanoindentations was increased. The effect of the cyclic loading on the hardness and Young's modulus of semiconductor material was much larger than that of the metal material. Young's modulus, the hardness and the contact stiffness of thin films conform to the relationship that Young's modulus was proportional to the contact stiffness and the square root of the thin film's hardness.
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Pero, Renato, Giovanni Maizza, Roberto Montanari e Takahito Ohmura. "Nano-Indentation Properties of Tungsten Carbide-Cobalt Composites as a Function of Tungsten Carbide Crystal Orientation". Materials 13, n. 9 (5 maggio 2020): 2137. http://dx.doi.org/10.3390/ma13092137.

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Tungsten carbide-cobalt (WC-Co) composites are a class of advanced materials that have unique properties, such as wear resistance, hardness, strength, fracture-toughness and both high temperature and chemical stability. It is well known that the local indentation properties (i.e., nano- and micro-hardness) of the single crystal WC particles dispersed in such composite materials are highly anisotropic. In this paper, the nanoindentation response of the WC grains of a compact, full-density, sintered WC-10Co composite material has been investigated as a function of the crystal orientation. Our nanoindentation survey has shown that the nanohardness was distributed according to a bimodal function. This function was post-processed using the unique features of the finite mixture modelling theory. The combination of electron backscattered diffraction (EBSD) and statistical analysis has made it possible to identify the orientation of the WC crystal and the distinct association of the inherent nanoindentation properties, even for a small set (67) of nanoindentations. The proposed approach has proved to be faster than the already existing ones and just as reliable, and it has confirmed the previous findings concerning the relationship between crystal orientation and indentation properties, but with a significant reduction of the experimental data.
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Randall, Nicholas X., Matthieu Vandamme e Franz-Josef Ulm. "Nanoindentation analysis as a two-dimensional tool for mapping the mechanical properties of complex surfaces". Journal of Materials Research 24, n. 3 (marzo 2009): 679–90. http://dx.doi.org/10.1557/jmr.2009.0149.

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Instrumented indentation (referred to as nanoindentation at low loads and low depths) has now become established for the single point characterization of hardness and elastic modulus of both bulk and coated materials. This makes it a good technique for measuring mechanical properties of homogeneous materials. However, many composite materials are composed of material phases that cannot be examined in bulk form ex situ (e.g., carbides in a ferrous matrix, calcium silicate hydrates in cements, etc.). The requirement for in situ analysis and characterization of chemically complex phases obviates conventional mechanical testing of large specimens representative of these material components. This paper will focus on new developments in the way that nanoindentation can be used as a two-dimensional mapping tool for examining the properties of constituent phases independently of each other. This approach relies on large arrays of nanoindentations (known as grid indentation) and statistical analysis of the resulting data.
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Donaldson, Laurie. "Novel nanoindentation". Materials Today 16, n. 9 (settembre 2013): 310. http://dx.doi.org/10.1016/j.mattod.2013.08.007.

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Rar, Andrei, G. M. Pharr, W. C. Oliver, E. Karapetian e Sergei V. Kalinin. "Piezoelectric nanoindentation". Journal of Materials Research 21, n. 3 (1 marzo 2006): 552–56. http://dx.doi.org/10.1557/jmr.2006.0081.

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Piezoelectric nanoindentation (PNI) has been developed to quantitatively address electromechanical coupling and pressure-induced dynamic phenomena in ferroelectric materials on the nanoscale. In PNI, an oscillating voltage is applied between the back side of the sample and the indenter tip, and the first harmonic of bias-induced surface displacement at the area of indenter contact is detected. PNI is implemented using a standard nanoindentation system equipped with a continuous stiffness measurement system. The piezoresponse of polycrystalline lead zirconate titanate (PZT) and BaTiO3 piezoceramics was studied during a standard nanoindentation experiment. For PZT, the response was found to be load independent, in agreement with theoretical predictions. In polycrystalline barium titanate, a load dependence of the piezoresponse was observed. The potential of piezoelectric nanoindentation for studies of phase transitions and local structure-property relations in piezoelectric materials is discussed.
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Minorl, A. M., E. A. Stach e J. W. Morris. "Quantitative In-Situ Nanoindentation of Thin Films in a Transmission Electron Microscope". Microscopy and Microanalysis 7, S2 (agosto 2001): 912–13. http://dx.doi.org/10.1017/s1431927600030634.

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A unique in situ nanoindentation stage has been built and developed at the National Center for Electron Microscopy in Berkeley, CA. By using piezoceramic actuators to finely position a 3-sided, boron-doped diamond indenter, we are able to image in real time the nanoindentation induced deformation of thin films. Recent work has included the force-calibration of the indenter, using silicon cantilevers to establish a relationship between the voltage applied to the piezoactuators, the displacement of the diamond tip, and the force generated.In this work, we present real time, in situ TEM observations of the plastic deformation of Al thin films grown on top of lithographically-prepared silicon substrates. The in situ nanoindentations require a unique sample geometry (see Figure 1) in which the indenter approaches the specimen normal to the electron beam. in order to meet this requirement, special wedge-shaped silicon samples were designed and microfabricated so that the tip of the wedge is sharp enough to be electron transparent.
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Zhou, Hong Xiu, Ming Lei Li, Neng Dong Duan, Bo Wang, Zhi Feng Shi, Ji Lei Lyu e Guo Xin Chen. "Nanotwinned Surface on a Ternary Titanium Alloy with Increased Hardness Induced under Nanoindentations". Materials Science Forum 874 (ottobre 2016): 323–27. http://dx.doi.org/10.4028/www.scientific.net/msf.874.323.

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A nanotwinned surface is formed on a titanium alloy under nanoindentations. Prior to nanoindentation, blocks of a ternary titanium alloy are machined by chemical mechanical polishing. The surface roughness Ra and peak-to-valley values are 1.135 nm and 8.82 nm, respectively. The hardness in the indented surface is greatly increased, indicated from the load-displacement curves compared to the polished surfaces. Nanotwins are confirmed using transmission electron microscopy. The nanotwinned surface is uniformly generated by nanoindentations at room temperature, which is different from previous findings, in which high temperature, high pressure, or chemical reagents are usually used. The nanotwinned surface is produced by pure mechanical stress, neither material removal nor addition.
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Le Bourhis, E., G. Patriarche, L. Largeau e J. P. Rivière. "Polarity-induced changes in the nanoindentation response of GaAs". Journal of Materials Research 19, n. 1 (gennaio 2004): 131–36. http://dx.doi.org/10.1557/jmr.2004.19.1.131.

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We studied the polarity-induced changes in the nanoindentation response of GaAs{111}. The nanoindentations were made under a large range of loads (Fmax between 0.2 mN and 50 mN) at room temperature on {111} faces of A (Ga) or B (As) character. The loading–unloading curves were compared first, with special attention addressed to pop-in events and hardness values (reported previously for microindentation). Transmission electron microscopy was used to observe the nanoindentation structures generated at the two polar surfaces. The size of the dense plastic zone generated around the indent site was found to increase linearly with √Fmax and similarly for both polar surfaces. The indentation rosettes possess a threefold symmetry with arms developed along the <110> directions parallel to the surface. Sizes were found to be very close for both polar surfaces and the entire load range. For an A-polar face, the rosette arms are constituted by two arms: a long arm (LA, α dislocations) and a short arm (β dislocations). At the B surface, only the LA (β dislocations) are formed. Furthermore, microtwinning was observed only for an A-polar face, similar to previous observations of anisotropic microtwinning at GaAs(001) surfaces.
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Tesi sul tema "Nanoindentation"

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Ziegenhain, Dr Gerolf. "Atomistische Simulation von Nanoindentation". Kaiserslautern Dr. Gerolf Ziegenhain c/o TU Kaiserslautern, 2009. http://gerolf.ziegenhain.com.

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Tang, Bin. "Nanoindentation of viscoelastic materials". Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3655408X.

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Wheeler, Jeffrey M. "Nanoindentation under dynamic conditions". Thesis, University of Cambridge, 2009. https://www.repository.cam.ac.uk/handle/1810/218320.

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Abstract (sommario):
Nanoindentation has emerged as a leading technique for the investigation of mechanical properties on small volumes of material. Extensive progress has been made in the last 20 years in refining the nstrumentation of nanoindentation systems and in analysis of the resulting data. Recent development has enabled investigation of materials under several dynamic conditions. The palladium-hydrogen system has a large miscibility gap, where the palladium lattice rapidly expands to form a hydrogen-rich β phase upon hydrogenation. Nanoindentation was used to investigate the mechanical effects of these transformations on foils of palladium. Study of palladium foils, which had been cycled through hydrogenation and dehydrogenation, allowed the extent of the transformed region to be determined. Unstable palladium foils, which had been hydrogenated and were subject to dynamic hydrogen loss, displayed significant hardening in the regions which were not expected to have transformed. The reason for this remains unclear. Impact indentation, where the indenter encounters the sample at relatively high speeds, can be used to probe the strain rate dependence of materials. By combining impact indentation and elevated temperature indentation, the strain rate dependence of the superelasticity of nickel-titanium was probed over a range of temperatures. Similar trends in elastic energy ratios with temperature were observed with the largest elastic proportions occurring at the Austenite finish transformation temperature. Multiple impact and scratch indentation are two modes of indentation which are thought to approximate erosive and abrasive wear mechanisms, respectively. These were utilised to investigate the wear resistance of several novel coatings formed by plasma electrolytic oxidation (PEO) of Ti-6Al4-V. Multiple impact indentation results appear to subjectively rank the erosive wear performance of both ductile and brittle materials. Comparison of normalised performance of coating systems on aluminium in abrasive wear to scratch hardness showed similar degrees of resistance.
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Feng, Gang, e 封剛. "Creep effects in nanoindentation". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31224350.

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Tang, Bin, e 唐斌. "Nanoindentation of viscoelastic materials". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B3655408X.

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Pfetzing, Janine. "Nanoindentation von NiTi-Formgedächtnislegierungen". Aachen Shaker, 2009. http://d-nb.info/995887918/04.

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Feng, Gang. "Creep effects in nanoindentation". Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23273288.

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McGee, Edward. "Multiscale modelling of nanoindentation". Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/35387.

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Abstract (sommario):
The process of nanoindentation causes physical phenomena not only at the nano-scale, but at multiple length scales up to the macroscopic. This thesis investigates multiscale modelling of nanoindentation that links atomistic scale molecular dynamics (MD) to a finite element (FE) model in order to extend the length scales that can be modelled. Existing multiscale models are investigated and the relevant advantages and disadvantages of each are discussed. New coupling techniques are developed in both 2D and 3D, which are applied to nanoindentation test simulations to verify the models. A new force attribution 3D multiscale model is applied to some studies of nanoindentation of Au and Fe. The results are compared to those obtained through experiment and to atomistic only models to investigate the effect of the embedding continuum region. These studies show that by extending the length scales, long range effects of nanoindentation can be modelled in the far field by continuum mechanics giving results that are in closer agreement with the experiment. The new coupling method has wide application and a study of laser ablation of Au has been carried out to show that the multiscale modelling technique can be used to improve the description of this phenomenon also.
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Christopher, David. "Molecular dynamics modelling of nanoindentation". Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/6924.

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This thesis presents an atomic-scale study of nanoindentation, with carbon materials and both bcc and fcc metals as test specimens. Classical molecular dynamics (MD) simulations using Newtonian mechanics and many-body potentials, are employed to investigate the elastic-plastic deformation behaviour of the work materials during nanometresized indentations. In a preliminary model, the indenter is represented solely by a non-deformable interface with pyramidal and axisymmetric geometries. An atomistic description of a blunted 90° pyramidal indenter is also used to study deformation of the tip, adhesive tip-substrate interactions and atom transfer, together with damage after adhesive rupture and mechanisms of tip-induced structural transformations and surface nanotopograpghy. To alleviate finite-size effects and to facilitate the simulation of over one million atoms, a parallel MD code using the MPI paradigm has also been developed to run on multiple processor machines. The work materials show a diverse range of deformation behaviour, ranging from purely elastic deformation with graphite, to appreciable plastic deformation with metals. Some qualitative comparisons are made to experiment, but available computer power constrains feasible indentation depths to an order of magnitude smaller than experiment, and over indentation times several orders of magnitude smaller. The simulations give a good description of nanoindentation and support many of the experimental features.
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McCann, Martha Mary. "Nanoindentation of Gold Single Crystals". Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/27170.

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Nanoindentation is an increasingly used tool to investigate the mechanical properties of very small volumes of material. Gold single crystals were chosen as a model system for surface modification studies, because of the electrochemical advantages and the simple structure of the material. Experiments on these samples displayed a spectrum of residual deformation, with measured hardness values on the same surface differing by over a factor of two. The yield point also exhibited considerable variation, but the depth of penetration was independent of this elasticâ plastic transition. The onset of plastic deformation in these tests is observed at stress levels on the order of the theoretical yield strength. There are a limited number of defects in a single crystal specimen of gold, especially on the length scale required to influence nearly every indentation experiment. A test matrix was designed to change the concentrations of possible defects in a sample (dislocations, vacancies, and structural features), by altering some of the surface preparation parameters. The results of these experiments were extremely consistent. Observed trends within the matrix, combined with the observations of reduced hardness and earlier plasticity when compared to the preliminary testing, indicate a decline in the structural continuity of the sample. This is surprising considering the extensive material removal and thermal history of some of these surfaces. There is no indication of a cause for the dramatic inconsistencies in mechanical properties observed in preliminary testing, but a consistent surface enables the study of intentional modifications. Changes in contact area that were undetectable in preliminary results now demonstrate predictable shifts in hardness values. The deposition of a single monolayer of gold oxide raised the average load at yield by a factor of three and increased the hardness by over 26%. Attributing this change to the oxide is corroborated by the reduction of hardness when the oxide is stripped. Similar behavior is observed when a lead monolayer is deposited and tested ex-situ. It is surprising that layers <0.5 nm in thickness would have such a dramatic influence on indentation tests at least 35 nm deep. This indicates that no surface layer can be ignored at this scale. These experiments demonstrate that there is still much to be learned about nanoscale deformation mechanisms.
Ph. D.
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Libri sul tema "Nanoindentation"

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Fischer-Cripps, Anthony C. Nanoindentation. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6.

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Fischer-Cripps, Anthony C. Nanoindentation. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9872-9.

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Fischer-Cripps, Anthony C. Nanoindentation. New York, NY: Springer New York, 2004. http://dx.doi.org/10.1007/978-1-4757-5943-3.

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Fischer-Cripps, Anthony C. Nanoindentation. 3a ed. New York: Springer, 2011.

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Dey, Arjun, e Anoop Kumar Mukhopadhyay. Nanoindentation of Natural Materials. Boca Raton, FL : CRC Press, 2019.: CRC Press, 2018. http://dx.doi.org/10.1201/9781315155548.

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Tiwari, Atul, e Sridhar Natarajan, a cura di. Applied Nanoindentation in Advanced Materials. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119084501.

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Wang, Haidou, Lina Zhu e Binshi Xu. Residual Stresses and Nanoindentation Testing of Films and Coatings. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7841-5.

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Chrobak, Dariusz. Metoda nanoindentacji w badaniach procesów odkształcenia plastycznego półprzewodników: Plastic deformation of semiconductors studied by nanoindentation. Katowice: Uniwersytet Śląski, 2012.

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Fischer-Cripps, Anthony C. Nanoindentation. Springer, 2002.

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Fischer-Cripps, Anthony C. Nanoindentation. Springer New York, 2010.

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Capitoli di libri sul tema "Nanoindentation"

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Fischer-Cripps, Anthony C. "Contact Mechanics". In Nanoindentation, 1–19. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_1.

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Fischer-Cripps, Anthony C. "Examples of Nanoindentation Testing". In Nanoindentation, 159–73. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_10.

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Fischer-Cripps, Anthony C. "Nanoindentation Testing". In Nanoindentation, 20–35. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_2.

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Fischer-Cripps, Anthony C. "Analysis of Nanoindentation Test Data". In Nanoindentation, 36–60. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_3.

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Fischer-Cripps, Anthony C. "Factors Affecting Nanoindentation Test Data". In Nanoindentation, 61–82. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_4.

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Fischer-Cripps, Anthony C. "Simulation of Nanoindentation Test Data". In Nanoindentation, 83–89. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_5.

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Fischer-Cripps, Anthony C. "Scaling Relationships in Nanoindentation". In Nanoindentation, 90–95. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_6.

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Fischer-Cripps, Anthony C. "Methods of Nanoindentation Testing". In Nanoindentation, 96–125. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_7.

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Fischer-Cripps, Anthony C. "Nanoindentation Test Standards". In Nanoindentation, 126–41. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_8.

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Fischer-Cripps, Anthony C. "Nanoindentation Test Instruments". In Nanoindentation, 142–58. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-22462-6_9.

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Atti di convegni sul tema "Nanoindentation"

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Patel, Hinal, Chen Yang, Howon Lee e Assimina A. Pelegri. "Investigation of Cyclic and Frequency Nanoindentation Effects in Polydimethylsiloxane". In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-12187.

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Abstract The nanoindentation response of polydimethylsiloxane (PDMS) is examined using single nanoindentation loading and small-scale fatigue. It is well known that viscoelastic material response is inherently related to the local loading and environmental conditions. First, quasistatic nanoindentation experiments were performed at various depths through the specimen to benchmark our nanoindentation results with literature data. The PDMS cyclic and frequency dependence to quasi-static and dynamic nanoindentation loading was studied and a ‘load/partial-unload’ technique was employed to investigate nanoindentation modulus variation through the thickness of the specimen. The frequencies of the small-scale fatigue tests were varied to study periodic response. The average indentation modulus for PDMS at 2mN load-controlled tests was 4.37 ± 0.1 MPa. The PDMS sample had an average indentation modulus value of 3.94 ± 0.06 MPa for 3mN load-controlled tests. The indentation moduli decreased as the maximum depth increased because the stiffness reduced when indentations were performed further from the surface. The single nanoindentation data was confirmed with literature values and validated the precision of nanoindentation testing. Small-scale fatigue tests were implemented at 50 cycles with frequencies of 1, 0.5, and 0.033 Hz. The lower frequencies displayed an increase in maximum depth at a given controlled load due to relaxation and creep effects. As with the single nanoindentations, the small-scale fatigue tests confirmed the decreasing trend of indentation moduli as the maximum depth increased. Overall, the two nanoindentation methods corroborated similar trends in changes of the PDMS mechanical response.
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Terrell, Elon J., Eric Landry, Alan McGaughey e C. Fred Higgs. "Molecular Dynamics Simulation of Nanoindentation". In STLE/ASME 2008 International Joint Tribology Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ijtc2008-71287.

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A molecular dynamics model of a nanoindentation experiment was simulated in order to calculate the elastic modulus of several different Lennard-Jones (LJ) solids. It was found that the elastic modulus increased significantly as the depth of the potential well that describes the interactions between the atoms in the sample was increased.
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Holzapfel, Christian. "Nanoindentation Mapping of Physical Properties". In 2009 Proceedings of the 55th IEEE Holm Conference on Electrical Contacts. IEEE, 2009. http://dx.doi.org/10.1109/holm.2009.5284407.

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Saha, Dhriti Ranjan, Amrita Mandal, Sreemanta Mitra, Mykanth Reddy Mada, Philip Boughton, Sri Bandyopadhyay e Dipankar Chakravorty. "Nanoindentation studies on silver nanoparticles". In PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4810198.

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Palistrant, N., H. Meinhard, P. Grau, Valeriu V. Bivol e Stephan V. Robu. "Nanoindentation of CAM:OMA polymer thermoplastic layers". In SPIE Proceedings, a cura di Valentin I. Vlad. SPIE, 2004. http://dx.doi.org/10.1117/12.583025.

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Leigh, S. H., C. C. Berndt, M. K. Ferber e L. Riester. "Nanoindentation Study of Thermal Spray Deposits". In ITSC 1997, a cura di C. C. Berndt. ASM International, 1997. http://dx.doi.org/10.31399/asm.cp.itsc1997p0723.

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Abstract (sommario):
Abstract The nanoindentation technique has been applied to thermal-sprayed metal, cermet and ceramic deposits. The hardness and elastic modulus were determined from the load-displacement curves. Each test was implemented by varying the penetration depth (100, 200, 300 and 400 nm) in the same test location and at least 20 tests were performed. The results were compared to those from microindentation tests. The nanoindentation test, essentially, measured the submicrometer scale properties of thermal spray deposits, which can be considered as "near-intrinsic" properties of the coatings. Thus, these measurements exclude most of the microstructural factors that influence the "macroscale" properties. The nanoindentation test exhibits significantly greater hardness and elastic modulus values than the microindentation test.
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ŠLESINGER, Radek, Anna CHARVÁTOVÁ CAMPBELL e Vilma BURŠÍKOVÁ. "Introducing force traceability to nanoindentation measurements". In NANOCON 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/nanocon.2020.3774.

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Yang, Ping-feng, Sheng-rui Jian, Yi-shao Lai, Tsan-hsien Chen e Rong-sheng Chen. "Nanoindentation-induced Phase Transformation of Silicon". In 2006 International Microsystems, Package, Assembly Conference Taiwan. IEEE, 2006. http://dx.doi.org/10.1109/impact.2006.312204.

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Paietta, Rachel C., Sara E. Olesiak e Virginia L. Ferguson. "Deformation Mechanisms in Nanoindentation of Bone". In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19665.

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Cortical bone is a hierarchical, composite material composed of mineralized collagen fibrils organized into lamellae and osteons as classically described by Lakes [1]. The inherent heterogeneity and hierarchy of bone tissue makes it an interesting material to study at various size scales using a range of spherical tip sizes in nanoindentation. Further, the prevalence of pointed, Berkovich nanoindenter tips enable researchers to readily generate nanoindentation data. However, other tip geometries and sizes may provide an advantage over the Berkovich tip by enabling a more elastic contact and testing over a range of contact areas and structures.
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Silveira Leal, José Eduardo, Teófilo Jacob Freitas e Souza, Sinésio Franco, Vera Lúcia Donizeti de Sousa FRanco e Rosenda Arencibia. "A CONTRIBUTION TO ELECTROCHEMICAL NANOINDENTATION TECHNIQUE". In 25th International Congress of Mechanical Engineering. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobem2019.cob2019-1419.

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Rapporti di organizzazioni sul tema "Nanoindentation"

1

Van Buskirk, Caleb Griffith. The Applications of Modern Nanoindentation. Office of Scientific and Technical Information (OSTI), marzo 2017. http://dx.doi.org/10.2172/1351173.

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Gigax, Jonathan Gregory, e Nan Li. Nanoindentation Characterization of FeCrAl C26M Welds. Office of Scientific and Technical Information (OSTI), settembre 2018. http://dx.doi.org/10.2172/1473768.

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Gigax, Jonathan Gregory, e Nan Li. Nanoindentation Characterization of FeCrAl C26M tubes. Office of Scientific and Technical Information (OSTI), ottobre 2018. http://dx.doi.org/10.2172/1477622.

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Weaver, Jordan, Eda Aydogan, Nathan Allan Mara e Stuart Andrew Maloy. Nanoindentation of Electropolished FeCrAl Alloy Welds. Office of Scientific and Technical Information (OSTI), febbraio 2017. http://dx.doi.org/10.2172/1343694.

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Gigax, Jonathan Gregory, Eda Aydogan, Matthew Chancey, Yongqiang Wang e Nan Li. Nanoindentation Analysis of Ion Irradiated FeCrAl C26M. Office of Scientific and Technical Information (OSTI), ottobre 2018. http://dx.doi.org/10.2172/1477629.

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Rutherford, Michael, e Cynthia Bolme. Brillouin Spectroscopy and Nanoindentation of Organic Crystals. Office of Scientific and Technical Information (OSTI), settembre 2014. http://dx.doi.org/10.2172/1158827.

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Leal, Joseph, Noah Pearlstein, George Gray, Veronica Anghel, James Valdez, Clarissa Yablinsky e Zachary Levin. An Investigation of Nanoindentation as Quality Control. Office of Scientific and Technical Information (OSTI), agosto 2023. http://dx.doi.org/10.2172/1993212.

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Minor, Andrew M. In situ nanoindentation in a transmission electron microscope. Office of Scientific and Technical Information (OSTI), gennaio 2002. http://dx.doi.org/10.2172/807441.

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Gerberich, William W., e A. A. Volinsky. Thin film adhesion by nanoindentation-induced superlayers. Final report. Office of Scientific and Technical Information (OSTI), giugno 2001. http://dx.doi.org/10.2172/809372.

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Tsui, T. Y., G. M. Pharr, W. C. Oliver, Y. W. Chung, E. C. Cutiongco, C. S. Bhatia, R. L. White, R. L. Rhodes e S. M. Gorbatkin. Nanoindentation and nanoscratching of hard coating materials for magnetic disks. Office of Scientific and Technical Information (OSTI), dicembre 1994. http://dx.doi.org/10.2172/34426.

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