2017
DOI: 10.1590/1980-5373-mr-2017-0454
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Abstract: In the present paper a continuous Finite Element Analysis (FEA) simulation method of the ball indentation hardness test is introduced in order to describe the deformation behavior of nanosilica composites and with this to extract precisely the material's stress-strain behavior. The developed procedure demonstrate in particular the adequacy of this method to determine the nanocomposites' elastic modulus which is compared with Halpin-Tsai and Lewis-Nielsen models as well as with experimental measurements taken f… Show more

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Cited by 41 publications
(29 citation statements)
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“…In instrumented indentation tests the load is measured as a function of penetration depth. Such tests enable local variations of modulus and hardness to be measured precisely [119,120,121,122]. In the current work the indentations were conducted using a dynamic ultra-micro-hardness tester (DUH-211; Shimadzu Co., Kyoto, Japan) fitted with a triangular pyramid indenter tip (Berkovich indenter).…”
Section: Methodsmentioning
confidence: 99%
“…In instrumented indentation tests the load is measured as a function of penetration depth. Such tests enable local variations of modulus and hardness to be measured precisely [119,120,121,122]. In the current work the indentations were conducted using a dynamic ultra-micro-hardness tester (DUH-211; Shimadzu Co., Kyoto, Japan) fitted with a triangular pyramid indenter tip (Berkovich indenter).…”
Section: Methodsmentioning
confidence: 99%
“…The unloading curve is a straight line (AB) and hr = hmax (W2 = 0) in the case of purely plastic material. In this case, penetration depth is the displacement into the sample starting from its surface [45,[53][54][55]. The nanoindentation tests were performed on a Shimadzu DUH211S device with a resolution of 0.2 µN.…”
Section: Nanoindentation Testsmentioning
confidence: 99%
“…The modulus and the hardness of the coatings were determined based on the work of Oliver and Pharr [56]. The indentation hardness can be determined as a function of the maximum penetration depth by [45,[53][54][55]:…”
Section: Nanoindentation Testsmentioning
confidence: 99%
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“…Nowadays there are various other advanced materials that could be utilized in vibration isolation applications. Researchers have concentrated their efforts towards the development of polymers in which nanomaterials are embedded in polymer substrates and much promising results have been established primarily for improvement of the mechanical properties [8][9][10][11][12]. The interest in porous metals arises from the interesting combination of characteristics and the easy adjustment of their properties to meet the desired needs by tailoring porosity characteristics.…”
Section: Introductionmentioning
confidence: 99%