Evaluation of viscoelastic properties of materials by nanoindentation

Abetkovskaia, S. O.; Чижик, С. А.; Rudnitsky, V. A.; Kren, A. P.

doi:10.3103/s1068366610030049

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…Osteoarthritis appears as a result of changes in elasticity of cells and tissues; hence, it is crucial to consider aspects such as the mechanical properties and the submicron surface morphology of hyaline cartilage. Lately, atomic force microscopy was recognized as a powerful tool to assess the properties of articular cartilage [ 9 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. Therefore, the purpose of this study was twofold.…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical Properties of Articular Cartilage Due to the PRP Injection in Experimental Osteoarthritis in Rabbits

et al. 2020

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The purpose of this study was twofold. Firstly, we proposed a measurement protocol for the atomic force microscopy (AFM) method to determine the nanomechanical properties of articular cartilage in experimental osteoarthritis in rabbits. Then, we verified if mechanical properties can be evaluated with AFM shortly after platelet-rich plasma (PRP) injection. We hypothesized that the modulus determined by AFM indentation experiments could be utilized as a progressive disease marker during the treatment of osteoarthritis. The rabbits were equally divided into three groups of six: control (group 1); injections of saline (0.5 mL) and 10% surgical talc (Talcum Pharmaceutical®, Minsk, Belarus) were delivered into the right knee under the patella (group 2 and 3); and PRP was injected into the right knee (group 3). In group 2, the arithmetic average of absolute values (Ra) change was a 25% increase; the maximum peak height (Rp) increased by over 102%, while the mean spacing between local peaks (S) increased by 28% (p < 0.05). In group 3, Ra increased by 14% and Rp increased by 32%, while S decreased by 75% (p < 0.05). The Young’s modulus of the surface layers decreased by 18% as a result of induced model of osteoarthritis (IMO) (p < 0.05), and it increased by 9% (p < 0.05) as a result of PRP therapy, which means that the mechanical properties of cartilage were partially recovered. This research demonstrates that Young’s modulus utilized on a nanometer scale has potential to be a progressive disease marker during the treatment of osteoarthritis.

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Section: Introductionmentioning

confidence: 99%

Nanomechanical Properties of Articular Cartilage Due to the PRP Injection in Experimental Osteoarthritis in Rabbits

et al. 2020

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“…Отличительной особенностью метода является возможность регистрации всего процесса нагружения (рис. 2) в виде диаграмм «контактное усилие P -перемещение h», а также зависимостей P = f(t), h = f(t), V = f(t) в широком диапазоне изменения сил и перемещений [6]. Данные испытаний прибора (см.…”

Section: / 3 2019unclassified

Testing of the physical and mechanical properties of cast iron with the help of IFMH-C device

et al. 2019

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The possibility of the application of impact microindentation method for testing the physic and mechanical properties of cast iron using the IFMH-C instrument developed at the Institute of applied physics of the National Academy of Sciences of Belarus was tested. It was established that the method and the instrument allow to estimate such parameters as Brinell hardness in the range of 100–500 HB, elastic modulus from 40 to 200 MPa, as well as to determine the tensile strength of the flake and spheroidal graphite cast irons. The possibility of using the instrument for non-destructive test directly of parts and products in the manufacturing environments is shown.

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“…263-271 Крень А.П. и др. Введение В настоящее время методы индентирования [1][2][3] широко вошли в практику контроля свойств самых различных материалов: полимеров, композитов, металлов, бетонов, биологических тканей. Они позволяют получить исходную информацию для определения физико-механических характеристик (модуля упругости Е IT , твердости индентирования H IT , параметров релаксации R IT и ползучести C IT , коэффициента деформационного упрочнения f и др.)…”

Section: Doiunclassified

Error estimation of the physical and mechanical characteristics measurements by indentation

Kren

Matsulevich

Delendik

2018

Prib. metody izmer.

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The active application in the practice of testing the indentation methods, in particular to measure the physical and mechanical properties of metals, polymers, biological technologies demands to development techniques for the measurement error estimation. At the same time existing traditional measurement error evaluation system, based on the using of the reference blocks, is not always suitable for use in testing and research laboratories. The aim of this work was development the technique for estimating the indirect measurements error of materials physical and mechanical characteristics that can be applied in practice and based on the existing standards. Checking of the proposed approach using the experimental values of the hardness and elastic modulus obtained during static indentation for various metals.It is shown that since the initial information about the material is an indentation curve representing the dependence of the load versus penetration depth of the indenter into the material tested, then it is better to confirm the metrological characteristics of the indentation measuring devices using the applied force and achieved displacement, but to estimate the accuracy of determining the properties through the error of indirect measurements. The equations for calculating the hardness and modulus of elasticity are derived. It allows to determine the component value most influencing the error magnitude. The calculation of error on the base of the value of boundary of a random and non-exclusive systematic error was carrying out.The advantage of the developed technique is the fact that the measurement of the physical and mechanical characteristics is based on the experimental data and does not require the creation of the additional metrological assurance. The proposed approach seems appropriate to extend for the determination of the measurement error of other characteristics: the yield point, the strain hardening exponent, creep, relaxation, determined by the indentation methods.

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Evaluation of viscoelastic properties of materials by nanoindentation

Cited by 8 publications

References 3 publications

Nanomechanical Properties of Articular Cartilage Due to the PRP Injection in Experimental Osteoarthritis in Rabbits

Nanomechanical Properties of Articular Cartilage Due to the PRP Injection in Experimental Osteoarthritis in Rabbits

Testing of the physical and mechanical properties of cast iron with the help of IFMH-C device

Error estimation of the physical and mechanical characteristics measurements by indentation

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