Relevant bibliographies by topics / Nanoindentation testing

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Nanoindentation testing'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Nanoindentation testing"

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Oila, A., and S. J. Bull. "Nanoindentation testing of gear steels." Zeitschrift für Metallkunde 94, no. 7 (July 2003): 793–97. http://dx.doi.org/10.3139/146.030793.

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Fischer-Cripps, A. C. "Multiple-frequency dynamic nanoindentation testing." Journal of Materials Research 19, no. 10 (October 1, 2004): 2981–88. http://dx.doi.org/10.1557/jmr.2004.0368.

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A new method of dynamic nanoindentation testing is introduced in this paper. Conventional dynamic nanoindentation testing involves the superposition of a single frequency sinusoidal force or displacement onto the quasi-static load–displacement curve. However, the viscoelastic response of many materials depends upon the frequency of the deformation of the material. This paper describes a method whereby the storage and loss modulus of viscoelastic solids can be determined using a multi-frequency dynamic oscillatory motion mode of deformation. In this method, the applied load is modulated by a pseudo-random force signal comprising multiple frequencies. A Fourier analysis is then used to deconvolute the signal into frequency-dependent values of storage and loss modulus for the specimen material as a function of frequency. The instrument response is cancelled by the use of a reference transfer function using an equalization process. Established modeling equations can then be used to extract the modulus of elasticity and the viscosity of the specimen material.
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Sudharshan Phani, Pardhasaradhi, and Warren Oliver. "Ultra High Strain Rate Nanoindentation Testing." Materials 10, no. 6 (June 17, 2017): 663. http://dx.doi.org/10.3390/ma10060663.

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Tserpes, Konstantinos, Panagiotis Bazios, Spiros Pantelakis, and Nikolaos Michailidis. "Nanoindentation testing and simulation of nanocrystalline materials." Procedia Structural Integrity 28 (2020): 1644–49. http://dx.doi.org/10.1016/j.prostr.2020.10.136.

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Kleinbichler, A., M. J. Pfeifenberger, J. Zechner, N. R. Moody, D. F. Bahr, and M. J. Cordill. "New Insights into Nanoindentation-Based Adhesion Testing." JOM 69, no. 11 (August 21, 2017): 2237–45. http://dx.doi.org/10.1007/s11837-017-2496-2.

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Kraft, Oliver, Norbert Huber, Edouard Tioulioukovski, and Ruth Schwaiger. "OS06W0407 Mechanical testing of materials in small volumes by nanoindentation and microbeam bending." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS06W0407. http://dx.doi.org/10.1299/jsmeatem.2003.2._os06w0407.

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Beake, Ben D., Stephen R. Goodes, and James F. Smith. "Nanoscale materials testing under industrially relevant conditions: high-temperature nanoindentation testing." Zeitschrift für Metallkunde 94, no. 7 (July 2003): 798–801. http://dx.doi.org/10.3139/146.030798.

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Král, Petr, Jiří Dvořák, Marie Kvapilová, Jaroslav Lukeš, and Vaclav Sklenička. "Constant Load Testing of Materials Using Nanoindentation Technique." Key Engineering Materials 606 (March 2014): 69–72. http://dx.doi.org/10.4028/www.scientific.net/kem.606.69.

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Experiments were conducted to evaluate creep behavior of conventional and ultrafine-grained metallic materials using nanoindentation technique. The polished surface of samples was loaded up to 5 mN. The load was held constant to examine the creep behavior. Nanoindentation tests were performed at room temperature. Strain rate was evaluated from load and displacement data. The stress exponents of strain rates n were determined from loading stress dependences of creep rate. The values of stress exponents of the indentation strain rate indicate that creep behavior of investigated materials is influenced in particular by slip of intragranular dislocations. By contrast, deformation mechanisms like grain boundary sliding and diffusion processes seem to be improbable.
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Kaufman, Jessica D., Gregory J. Miller, Elise F. Morgan, and Catherine M. Klapperich. "Time-dependent mechanical characterization of poly(2-hydroxyethyl methacrylate) hydrogels using nanoindentation and unconfined compression." Journal of Materials Research 23, no. 5 (May 2008): 1472–81. http://dx.doi.org/10.1557/jmr.2008.0185.

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Hydrogels pose unique challenges to nanoindentation including sample preparation, control of experimental parameters, and limitations imposed by mechanical testing instruments and data analysis originally intended for harder materials. The artifacts that occur during nanoindentation of hydrated samples have been described, but the material properties obtained from hydrated nanoindentation have not yet been related to the material properties obtained from macroscale testing. To evaluate the best method for correlating results from microscale and macroscale tests of soft materials, nanoindentation and unconfined compression stress-relaxation tests were performed on poly-2-hydroxyethyl methacrylate (pHEMA) hydrogels with a range of cross-linker concentrations. The nanoindentation data were analyzed with the Oliver–Pharr elastic model and the Maxwell–Wiechert (j = 2) viscoelastic model. The unconfined compression data were analyzed with the Maxwell–Wiechert model. This viscoelastic model provided an excellent fit for the stress-relaxation curves from both tests. The time constants from nanoindentation and unconfined compression were significantly different, and we propose that these differences are due to differences in equilibration time between the microscale and macroscale experiments and in sample geometry. The Maxwell–Wiechert equilibrium modulus provided the best agreement between nanoindentation and unconfined compression. Also, both nanoindentation analyses showed an increase in modulus with each increasing cross-linker concentration, validating that nanoindentation can discriminate between similar, low-modulus, hydrated samples.
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Randall, Nicholas X., Matthieu Vandamme, and Franz-Josef Ulm. "Nanoindentation analysis as a two-dimensional tool for mapping the mechanical properties of complex surfaces." Journal of Materials Research 24, no. 3 (March 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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Dissertations / Theses on the topic "Nanoindentation testing"

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De, Bono Damaso M. "Inverse analysis and microstructure effects in nanoindentation testing." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/841572/.

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Inverse analysis of nanoindentation data has attracted increasing interest in industry due to its ability to estimate the bulk tensile properties of materials and potentially offers an alternative technique to conventional characterisation methods. Inverse analysis of nanoindentation data is particularly valuable in applications where conventional techniques are not suitable due to either the scale of characterisation (very small regions) or because the testing is expensive and time consuming. Despite using best practices to minimise sources of error in the experimental data, given the scale of the indentations, the heterogeneity of material microstructure can create significant variability in the data, ultimately affecting the reliability of the inverse analysis solution. This thesis proposes and discusses pragmatic approaches to mitigate the effects of material heterogeneity on the accuracy of the inverse problem solution as well as of nanoindentation data in general. The work has involved finite element analysis modelling, nanoindentation and tensile testing. One mitigation approach consisted in the implementation and verification of a new ‘multi-objective’ function inverse analysis methodology where the bias of selecting only one experimental nanoindentation curve as representative of the homogenised response of the material is overcome. The new approach uses all the experimental curves generated from a grid of nanoindentations and employs a weighted averaging procedure. This methodology was applied to S355 steel samples through recording nanoindentation and tensile test data. Despite the variation present in the experimental nanoindentation load-depth curves, this being in the order of 13%, the ‘multi-objective’ function approach was found to estimate the tensile parameters with an error margin as low as 3-6% compared to an error margin of 9-20% for the conventional method. A framework of activities was also undertaken to monitor the variation of the measured nanoindentation properties (e.g. hardness) as function of the indentation depth, in relation to the average grain size of the material. Commercial purity aluminium 1050 samples (with varying average grain sizes) and S355 steel were employed as test materials. These results in addition to those from other materials were used to construct a look-up plot of the hardness COV values as function of the normalised nanoindentation depths (normalised with respect to the average grain diameter). The plot is based on upper and lower bound curves and intends to provide guidance on the selection of the nanoindentation testing parameters to minimise the variability of the indentation response.
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Chen, Zhaoyu [Verfasser]. "Nanoindentation testing of soft polymers : Computation, experiments and parameters identification / Zhaoyu Chen." Aachen : Shaker, 2014. http://d-nb.info/1053903243/34.

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Wo, Pui-ching, and 胡佩晶. "An investigation of the deformation behaviour of Ni3AI using nanoindentation and nanoscratch methods." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B35508218.

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Chen, Zhaoyu [Verfasser], and Stefan [Akademischer Betreuer] Diebels. "Nanoindentation testing of soft polymers : computation, experiments and parameters identification / Zhaoyu Chen. Betreuer: Stefan Diebels." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1053985304/34.

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Aguilar, Juan Pablo. "Experimental methodology to assess the effect of coatings on fiber properties using nanoindentation." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45781.

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Current body armor technologies need further improvements in their design to help reduce combat injuries of military and law enforcement personnel. Kevlar-based body armor systems have good ballistic resistance up to a certain ballistic threat level due to limitations such as decreased mobility and increased weight [1,2]. Kevlar fibers have been modified in this work using a nano-scale boron carbide coating and a marked increase in the puncture resistance has been experimentally observed. It is hypothesized that this improvement is due to the enhancement of the mechanical properties of the individual Kevlar fibers due to the nano-scale coatings. This study presents a comprehensive experimental investigation of individual Kevlar fibers based on nanoindentation to quantify the cause of the enhanced puncture resistance. The experimental setup was validated using copper wires with a diameter size in the same order of magnitude as Kevlar fibers. Results from nanoindentation did not show significant changes in the modulus or hardness of the Kevlar fibers. Scanning Electron Microscopy revealed that the coated fibers had a marked change in their surface morphology. The main finding of this work is that the boron carbide coating did not affect the properties of the individual fibers due to poor adhesion and non-uniformity. This implies that the observed enhancement in puncture resistance originates from the interaction between fibers due to the increase in roughness. The results are important in identifying further ways to enhance Kevlar puncture resistance by modifying the surface properties of fibers.
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Vadlakonda, Suman. "Indentation induced deformation in metallic materials." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4904/.

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Nanoindentation has brought in many features of research over the past decade. This novel technique is capable of producing insights into the small ranges of deformation. This special point has brought a lot of focus in understanding the deformation behavior under the indenter. Nickel, iron, tungsten and copper-niobium alloy system were considered for a surface deformation study. All the samples exhibited a spectrum of residual deformation. The change in behavior with indentation and the materials responses to deformation at low and high loads is addressed in this study. A study on indenter geometry, which has a huge influence on the contact area and subsequently the hardness and modulus value, has been attempted. Deformation mechanisms that govern the plastic flow in materials at low loads of indentation and their sensitivity to the rate of strain imparted has been studied. A transition to elastic, plastic kind of a tendency to an elasto-plastic tendency was seen with an increase in the strain rate. All samples exhibited the same kind of behavior and a special focus is drawn in comparing the FCC nickel with BCC tungsten and iron where the persistence of the elastic, plastic response was addressed. However there is no absolute reason for the inconsistencies in the mechanical properties observed in preliminary testing, more insights can be provided with advanced microscopy techniques where the study can be focused more to understand the deformation behavior under the indenter. These experiments demonstrate that there is a wealth of information in the initial stages of indentation and has led to much more insights into the incipient stages of plasticity.
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Srivastava, Ashish Kumar. "Orientation, Microstructure and Pile-Up Effects on Nanoindentation Measurements of FCC and BCC Metals." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc6050/.

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This study deals with crystal orientation effect along with the effects of microstructure on the pile-ups which affect the nanoindentation measurements. Two metal classes, face centered cubic (FCC) and body centered cubic (BCC, are dealt with in the present study. The objective of this study was to find out the degree of inaccuracy induced in nanoindentation measurements by the inherent pile-ups and sink-ins. Also, it was the intention to find out how the formation of pile-ups is dependant upon the crystal structure and orientation of the plane of indentation. Nanoindentation, Nanovision, scanning electron microscopy, electron dispersive spectroscopy and electron backscattered diffraction techniques were used to determine the sample composition and crystal orientation. Surface topographical features like indentation pile-ups and sink-ins were measured and the effect of crystal orientation on them was studied. The results show that pile-up formation is not a random phenomenon, but is quite characteristic of the material. It depends on the type of stress imposed by a specific indenter, the depth of penetration, the microstructure and orientation of the plane of indentation. Pile-ups are formed along specific directions on a plane and this formation as well as the pile-up height and the contact radii with the indenter is dependant on the aforesaid parameters. These pile-ups affect the mechanical properties like elastic modulus and hardness measurements which are pivotal variables for specific applications in micro and nano scale devices.
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Ciprari, Daniel L. "Mechanical Characterization of Polymer Nanocomposites and the Role of Interphase." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4872.

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Mechanical characterization of four polymer nanocomposite systems and two pure polymer reference systems was performed. Alumina (Al2O3) and magnetite (Fe3O4) nanoparticles were embedded in poly(methyl methacrylate) (PMMA) and polystyrene (PS) matrices. Mechanical testing techniques utilized include tensile testing, dynamic mechanical analysis (DMA), and nanoindentation. Consistent results from the three techniques proved that these nanocomposite systems exhibit worse mechanical properties than their respective pure polymer systems. The interphase, an interfacial area between the nanoparticle filler and the polymer matrix, was investigated using two approaches to explain the mechanical testing results. The first approach utilized data from thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM) to predict the structure and density of the interphase for the four nanocomposite systems. The second approach analyzed the bonding between the polymer and the nanoparticle surfaces using Fourier Transform Infrared Spectroscopy (FT-IR) to calculate the density of the interphase for the two PMMA-based nanocomposite systems. Results from the two approaches were compared to previous studies. The results indicate that Al2O3 nanoparticles are more reactive with the polymer matrix than are Fe3O4 nanoparticles, but neither have strong interaction with the polymer matrix. The poor interaction leads to low density interphase which results in the poor mechanical properties.
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Shaheer, Muhammad. "Effects of welding parameters on the integrity and structure of HDPE pipe butt fusion welds." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/16919.

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Butt fusion welding process is an extensively used method of joining for high density polyethylene (HDPE) pipe. With the increasing number of HDPE resin and pipe manufacturers and the diversity of industries utilising HDPE pipes, a wide range of different standards have evolved to specify the butt fusion welding parameters with inspection and testing methods, to maintain quality and structural integrity of welds. There is a lack of understanding and cohesion in these standards for the selection of welding parameters; effectiveness, accuracy, and selection of the test methods and; correlation of the mechanical properties to the micro and macro joint structure. The common standards (WIS 4-32-08, DVS 2207-1, ASTM F2620, and ISO 21307) for butt fusion welding were used to derive the six welding procedures. A total of 48 welds were produced using 180 mm outer diameter SDR 11 HDPE pipe manufactured from BorSafe™ HE3490-LS black bimodal PE100 resin. Three short term coupon mechanical tests were conducted. The waisted tensile test was able to differentiate the quality of welds using the energy to break parameter. The tensile impact test due to specimen geometry caused the failure to occur in the parent material. The guided side bend specimen geometry proved to be too ductile to be able to cause failures. A statistical t-test was used to analyse the results of the short term mechanical tests. The circumferential positon of the test specimen had no impact on their performance. Finite element analysis (FEA) study was conducted for the long term whole pipe tensile creep rupture (WPTCR) test to find the minimum length of pipe required for testing based on pipe geometry parameters of outer diameter and SDR. Macrographs of the weld beads supplemented with heat treatment were used to derive several weld bead parameters. The FEA modelling of the weld bead parameters identified the length to be a key parameter and provided insight into the relationship between the geometry of the weld beads and the stresses in the weld region. The realistic bead geometry digitised using the macrographs contributed a 30% increase in pipe wall stress due to the stress concentration effect of the notches formed between the weld beads and the pipe wall. The circumferential position of the weld bead had no impact on the pipe wall stresses in a similar manner to the results of the different mechanical tests. IV Nanoindentation (NI) and differential scanning calorimetry (DSC) techniques were used to study the weld microstructure and variation of mechanical properties across the weld at the resolutions of 100 and 50 microns, respectively. NI revealed signature 'twin-peaks and a valley' distribution of hardness and elastic modulus across the weld. The degrees of crystallinity obtained from DSC followed the NI pattern as crystallinity positively correlates with the material properties. Both techniques confirm annealing of the heat affected zone (HAZ) material towards the MZ from the parent material. The transmission light microscopy (TLM) was used to provide dimensions of the melt zone (MZ) which displays an hour glass figure widening to the size of the weld bead root length towards the pipe surfaces. Thermal FEA modelling was validated using both NI and TLM data to predict the HAZ size. The HAZ-parent boundary temperature was calculated to be 105 ⁰C. The 1st contribution of the study is to prove the existence of a positive correlation between the heat input calculated from FEA and the energy to break values obtained from the waisted tensile test. The 2nd contribution providing the minimum length of pipe for WPTCR based on the pipe dimensions. The 3rd contribution is the recommendation for the waisted tensile test with the test using the geometry designed to minimise deformation of the loading pin holes. The 4th contribution related the weld bead parameters to pipe wall stresses and the effect of notches as stress concentrators. The 5th contribution is a new method of visualising a welding procedure that can be used to not only compare the welding procedures but also predict the size of the MZ and the HAZ. The 6th contribution of the study is the proposal of new weld bead geometry that consist of the MZ bounded by the HAZ, for butt fusion welded joints of HDPE pipes.
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Siddiqui, Mohammad S. "Vacuum Brazing of Alumina Ceramic to Titanium Using Pure Gold as Filler Metal for Biomedical Implants." FIU Digital Commons, 2011. http://digitalcommons.fiu.edu/etd/497.

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One of the many promising applications of metal/ceramic joining is in biomedical implantable devices. This work is focused on vacuum brazing of C.P titanium to 96% alumina ceramic using pure gold as the filler metal. A novel method of brazing is developed where resistance heating of C.P titanium is done inside a thermal evaporator using a Ta heating electrode. The design of electrode is optimized using Ansys resistive heating simulations. The materials chosen in this study are biocompatible and have prior history in implantable devices approved by FDA. This research is part of Boston Retinal implant project to make a biocompatible implantable device (www.bostonretina.org). Pure gold braze has been used in the construction of single terminal feedthrough in low density hermetic packages utilizing a single platinum pin brazed to an alumina or sapphire ceramic donut ( brazed to a titanium case or ferrule for many years in implantable pacemakers. Pure gold (99.99%) brazing of 96% alumina ceramic with CP titanium has been performed and evaluated in this dissertation. Brazing has been done by using electrical resistance heating. The 96% alumina ceramic disk was manufactured by high temperature cofired ceramic (HTCC) processing while the Ti ferrule and gold performs were purchased from outside. Hermetic joints having leak rate of the order of 1.6 X 10-8 atm-cc/ sec on a helium leak detector were measured. Alumina ceramics made by HTCC processing were centreless grounded utilizing 800 grit diamond wheel to provide a smooth surface for sputtering of a thin film of Nb. Since pure alumina demonstrates no adhesion or wetting to gold, an adhesion layer must be used on the alumina surface. Niobium (Nb), Tantalum (Ta) and Tungsten (W) were chosen for evaluation since all are refractory (less dissolution into molten gold), all form stable oxides (necessary for adhesion to alumina) and all are readily thin film deposited as metals. Wetting studies are also performed to determine the wetting angle of pure gold to Ti, Ta, Nb and W substrates. Nano tribological scratch testing of thin film of Nb (which demonstrated the best wetting properties towards gold) on polished 96% alumina ceramic is performed to determine the adhesion strength of thin film to the substrate. The wetting studies also determined the thickness of the intermetallic compounds layers formed between Ti and gold, reaction microstructure and the dissolution of the metal into the molten gold.
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Books on the topic "Nanoindentation testing"

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

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Wang, Haidou, Lina Zhu, and 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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Fischer-Cripps, Anthony C. Nanoindentation. Springer New York, 2010.

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

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Nanoindentation of Natural Materials. Taylor & Francis Group, 2018.

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Fischer-Cripps, Anthony C. Nanoindentation: Third Edition. Springer, 2013.

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Fundamentals of Nanoindentation and Nanotribology IV. Cambridge University Press, 2008.

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Xu, Binshi, Haidou Wang, and Lina Zhu. Residual Stresses and Nanoindentation Testing of Films and Coatings. Springer, 2018.

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Xu, Binshi, Haidou Wang, and Lina Zhu. Residual Stresses and Nanoindentation Testing of Films and Coatings. Springer, 2019.

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Bourhis, Eric Le, Michelle L. Oyen, Dylan J. Morris, Ruth Schwaiger, and Thorsten Staedler. Fundamentals of Nanoindentation and Nanotribology IV: Volume 1049. University of Cambridge ESOL Examinations, 2014.

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Book chapters on the topic "Nanoindentation testing"

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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. "Nanoindentation Testing." In Nanoindentation, 21–37. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9872-9_2.

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Fischer-Cripps, Anthony C. "Nanoindentation Testing." In Nanoindentation, 21–38. New York, NY: Springer New York, 2004. http://dx.doi.org/10.1007/978-1-4757-5943-3_2.

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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. "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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Shen, Yu-Lin. "Nanoindentation for Testing Material Properties." In Handbook of Mechanics of Materials, 1981–2012. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-10-6884-3_46.

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Hangen, Ude D., Douglas D. Stauffer, and S. A. Syed Asif. "Resolution Limits of Nanoindentation Testing." In Solid Mechanics and Its Applications, 85–102. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6919-9_5.

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Shen, Yu-Lin. "Nanoindentation for Testing Material Properties." In Handbook of Mechanics of Materials, 1–32. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6855-3_46-1.

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Feng, Xue, Yonggang Huang, and Keh-chih Hwang. "Size Effects in Nanoindentation." In Micro and Nano Mechanical Testing of Materials and Devices, 48–68. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-78701-5_2.

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Xu, Zhi-Hui, and X. D. Li. "Residual Stress Determination Using Nanoindentation Technique." In Micro and Nano Mechanical Testing of Materials and Devices, 136–50. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-78701-5_7.

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Conference papers on the topic "Nanoindentation testing"

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Gan, B., H. Murakami, R. Maaß, L. Meza, J. Greer, T. Ohmura, and S. Tin. "Nanoindentation and Nano-compresion Testing of Ni3Al Precipitates." In Superalloys. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.7449/2012/superalloys_2012_83_91.

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Patel, Hinal, Chen Yang, Howon Lee, and 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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Fahim, Abdullah, S. M. Kamrul Hasan, Jeffrey C. Suhling, and Pradeep Lall. "Nanoindentation Testing of SAC305 Solder Joints Subjected to Thermal Cycling Loading." In ASME 2019 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ipack2019-6471.

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Abstract Solder joints in electronic packages are frequently exposed to thermal cycling environment. Such exposures can occur in real life application as well as in accelerated thermal cycling tests used for the fatigue behavior characterization. Because of temperature variations and CTE mismatches of the assembly materials, cyclic temperature leads to damage accumulation and material property evolution in the solder joints. This eventually results in crack initiation, and subsequent crack growth and failure. In this study, the nanoindentation technique was used to understand the evolution of mechanical properties (modulus, hardness and creep behavior) of SAC305 BGA solder joints and Cu pad subjected to thermal cycling loading for various durations. In addition, microstructural changes in those joints that occur during thermal cycling were observed using both SEM and optical microscopy. BGA solder joint strip specimens were first prepared by cross sectioning BGA assemblies followed by surface polishing to facilitate SEM imaging and nanoindentation testing. The strip specimens were chosen to contain several single grain solder joints. This enabled large regions of solder material with equivalent mechanical behavior, which could then be indented several times after various durations of cycling. After preparation, the solder joint strip samples were thermally cycled from T = −40 to 125 °C in an environmental chamber. At various points in the cycling (e.g. after 0, 50, 100, and 250 cycles), the package was taken out from the chamber, and nanoindentation was performed on each single grain joint and joint Cu pads to obtain the modulus, hardness, and creep behavior at 25 °C. This allowed the evolution of the mechanical properties with the duration of thermal cycling to be determined. Moreover, microstructural changes were also observed after various durations of cycling using optical microscopy. From the nanoindentation test results, it was found that the modulus and hardness of the SAC305 solder joints dropped significantly with thermal cycling. However, the Cu pad did not show any change in the mechanical behavior during cycling. Moreover, the nanoindentation creep test results showed significant increases in the creep deformation for solder joints whereas Cu pad did now show any significant changes in creep behavior when both of them were subjected to thermal cycling up to 250 cycles.
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Wen, Mao-ping, Tian-na Chen, Shi-ming Jing, and Hong Liao. "The mechanical properties of the composited polyurethane coatings testing by nanoindentation." In International Conference on Experimental Mechnics 2008 and Seventh Asian Conference on Experimental Mechanics, edited by Xiaoyuan He, Huimin Xie, and YiLan Kang. SPIE, 2008. http://dx.doi.org/10.1117/12.839248.

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Sun, J. Y., J. Tong, and Z. J. Zhang. "The specimen preparation methods for nanoindentation testing of biomaterials: a review." In Photonics Asia 2007, edited by Xing Zhu, Stephen Y. Chou, and Yasuhiko Arakawa. SPIE, 2007. http://dx.doi.org/10.1117/12.756306.

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Paietta, Rachel C., Sara E. Olesiak, and 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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Cao, Yongzhi, Yanshen Wang, Shen Dong, Yanqiang Yang, Yingchun Liang, and Tao Sun. "Residual stresses around femtosecond laser ablated grooves in silicon wafer evaluated by nanoindentation." In 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, edited by Sen Han, Tingwen Xing, Yanqiu Li, and Zheng Cui. SPIE, 2007. http://dx.doi.org/10.1117/12.782835.

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Zhang, Jingzhou, and Timothy C. Ovaert. "Mechanical Property Determination of Bone Through Nanoindentation Testing and Finite Element Simulation." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176801.

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Measurement of the mechanical properties of bone is important for estimation of the local mechanical response of bone cells to loading experienced on a larger scale. An increasing number of measurements of the hardness and Young’s modulus of bone tissue have been undertaken using nanoindentation [1,2]. However, testing conditions have not been uniform. The interactions that can occur between testing condition parameters were considered in this study, and average hardness and Young’s modulus were obtained as a function of indentation creep testing conditions (maximum load, loading/unloading rate (both equal in magnitude), load-holding time, and indenter shape).
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Wen-Hwa Chen, Hsien-Chie Cheng, and Ching-Feng Yu. "On the mechanical properties of Cu3Sn intermetallic compound through molecular dynamics simulation and nanoindentation testing." In Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). IEEE, 2010. http://dx.doi.org/10.1109/esime.2010.5464610.

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Cao, Zhiqiang, Tong-Yi Zhang, and Xin Zhang. "A Nanoindentation-Based Microbridge Testing Method for Mechanical Characterization of Thin Films for MEMS Applications." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80288.

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Plasma-enhanced chemical vapor deposited (PECVD) silane-based oxides (SiOx) have been widely used in both microelectronics and MEMS (MicroElectroMechanical Systems) to form electrical and/or mechanical components. In this paper, a novel nanoindentation-based microbridge testing method is developed to measure both the residual stresses and Young’s modulus of PECVD SiOx films on silicon wafers. Theoretically, we considered both the substrate deformation and residual stress in the thin film and derived a closed formula of deflection versus load. The formula fitted the experimental curves almost perfectly, from which the residual stresses and Young’s modulus of the film were determined. Experimentally, freestanding microbridges made of PECVD SiOx films were fabricated using the silicon undercut bulk micromachining technique. The results showed that the as-deposited PECVD SiOx films had a residual stress of −155±17 MPa and a Young’s modulus of 74.8±3.3 GPa.
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Reports on the topic "Nanoindentation testing"

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Weiss, Charles, William McGinley, Bradford Songer, Madeline Kuchinski, and Frank Kuchinski. Performance of active porcelain enamel coated fibers for fiber-reinforced concrete : the performance of active porcelain enamel coatings for fiber-reinforced concrete and fiber tests at the University of Louisville. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40683.

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A patented active porcelain enamel coating improves both the bond between the concrete and steel reinforcement as well as its corrosion resistance. A Small Business Innovation Research (SBIR) program to develop a commercial method for production of porcelain-coated fibers was developed in 2015. Market potential of this technology with its steel/concrete bond improvements and corrosion protection suggests that it can compete with other fiber reinforcing systems, with improvements in performance, durability, and cost, especially as compared to smooth fibers incorporated into concrete slabs and beams. Preliminary testing in a Phase 1 SBIR investigation indicated that active ceramic coatings on small diameter wire significantly improved the bond between the wires and the concrete to the point that the wires achieved yield before pullout without affecting the strength of the wire. As part of an SBIR Phase 2 effort, the University of Louisville under contract for Ceramics, Composites and Coatings Inc., proposed an investigation to evaluate active enamel-coated steel fibers in typical concrete applications and in masonry grouts in both tension and compression. Evaluation of the effect of the incorporation of coated fibers into Ultra-High Performance Concrete (UHPC) was examined using flexural and compressive strength testing as well as through nanoindentation.
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