The effect of small-amplitude load oscillations on the nanocontact characteristics of materials in nanoindentation

Golovin, Yu. I.; Коренков, В. В.; Razlivalova, Svetlana S.

doi:10.1134/s1063783417060105

Cited by 5 publications

(5 citation statements)

References 50 publications

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“…[24] The similar results were also reported for the effect of oscillation amplitude on the nano-mechanical properties of fused silica, gallium arsenide, molybdenum, tungsten, and aluminum. [16] Similar behaviors were also observed for the nano-mechanical properties of LDPE as a function of frequency as depicted in Figures 4-6.…”

Section: Effect Of Amplitude and Frequency On Nanoindentation Responsesupporting

confidence: 76%

“…Several studies have been reported to analyze the effect of different loading conditions on nano-indentation measurements. Golovin et al [16] studied the effect of oscillation amplitude on the mechanical properties of fused silica, gallium arsenide, molybdenum, tungsten, and aluminum using nano-indentation technique. Jia et al [17] reported the effect of strain rate on the nano-mechanical properties of different materials like fused silica, single crystal silicon and duplex stainless steel by using both normal indentation and continuous stiffness mode indentation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of experimental conditions on nano-indentation response of low density polyethylene (LDPE)

Yasin

Shakeel

Iqbal

et al. 2019

Journal of Macromolecular Science, Part A

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Nano-indentation is an interesting tool for analyzing nano-scale mechanical properties. The analysis of nano-mechanical properties as a function of experimental conditions is very critical for designing engineering components. In this study, nano-indentation experiments were performed by considering different values of amplitude (1, 5, 10 nm), frequency (11.2, 22.5, 45 Hz), strain rate (0.02, 0.05, 0.1, 0.2, 1 s À1 ), peak load (10, 30, 100 mN) and hold time (1,3,5,10,20, 50, 100 sec) to analyze their effect on the mechanical properties of LDPE. The results showed that the effect of amplitude and frequency on the nano-mechanical properties of LDPE were negligible. Load-displacement curves displayed a shift towards higher indentation depths along with a decrease in peak load from 20.6 to 14.8 mN by having a decrease in strain rate from 1 to 0.02 s À1 . Elastic modulus and hardness values exhibited a decrease with an increase in hold time. Logarithmic creep model was used to fit the experimental data of creep as a function of holding time which showed good agreement (r 2 ! 0.97) with the experimental values. Recommended holding times are also suggested to eliminate the creep and nose problem in order to achieve high accuracy in measurements.

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Section: Effect Of Amplitude and Frequency On Nanoindentation Responsesupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Effect of experimental conditions on nano-indentation response of low density polyethylene (LDPE)

Yasin

Shakeel

Iqbal

et al. 2019

Journal of Macromolecular Science, Part A

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show abstract

“…[13,32]. Similar results have also been reported in the literature for nano-indentation of various metals [24]. Figures 2 and 3 also show a significant increase in hardness (from 27 to 70 MPa at a displacement of 4000 nm) and modulus (from 0.9 to 2.0 GPa at a displacement of 4000 nm) by increasing the vibration amplitude from 1 to 10 nm.…”

Section: Methodssupporting

confidence: 88%

“…[13,32]. Similar results have also been reported in the literature for nano-indentation of various metals [24].…”

Section: Effect Of Amplitude Frequency and Contact Depthsupporting

confidence: 88%

“…Chakraborty et al [23], for instance, reported the nano-mechanical characteristics of multifunctional ZnO/PMMA-based nanocomposites using a nano-indenter. The surface properties of gallium arsenide, molybdenum, aluminum, fused silica, and tungsten were also studied with the help of a nano-indentation technique [24]. The effect of strain rate on the nano-mechanical behavior of metallic and polymeric materials has been analyzed by using the normal indentation mode and a continuous stiffness indentation mode [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Nano-Indentation Response of Ultrahigh Molecular Weight Polyethylene (UHMWPE): A Detailed Analysis

et al. 2020

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Nano-indentation, a depth sensing technique, is a useful and exciting tool to investigate the surface mechanical properties of a wide range of materials, particularly polymers. Knowledge of the influence of experimental conditions employed during nano-indentation on the resultant nano-mechanical response is very important for the successful design of engineering components with appropriate surface properties. In this work, nano-indentation experiments were carried out by selecting various values of frequency, amplitude, contact depth, strain rate, holding time, and peak load. The results showed a significant effect of amplitude, frequency, and strain rate on the hardness and modulus of the considered polymer, ultrahigh molecular weight polyethylene (UHMWPE). Load-displacement curves showed a shift towards the lower indentation depths along with an increase in peak load by increasing the indentation amplitude or strain rate. The results also revealed the strong dependence of hardness and modulus on the holding time. The experimental data of creep depth as a function of holding time was successfully fitted with a logarithmic creep model (R2 ≥ 0.98). In order to remove the creeping effect and the nose problem, recommended holding times were proposed for the investigated polymer as a function of different applied loads.

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Nanoindentation and Mechanical Properties of Materials at Submicro- and Nanoscale Levels: Recent Results and Achievements

Golovin

2021

Phys. Solid State

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The effect of small-amplitude load oscillations on the nanocontact characteristics of materials in nanoindentation

Cited by 5 publications

References 50 publications

Effect of experimental conditions on nano-indentation response of low density polyethylene (LDPE)

Effect of experimental conditions on nano-indentation response of low density polyethylene (LDPE)

Nano-Indentation Response of Ultrahigh Molecular Weight Polyethylene (UHMWPE): A Detailed Analysis

Nanoindentation and Mechanical Properties of Materials at Submicro- and Nanoscale Levels: Recent Results and Achievements

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