Evaluation of the material constants of nitrile butadiene rubbers (NBRs) with different carbon black loading (CB): FE-simulation and experimental

Hassan, Mohsen A.; Abouel-Kasem, A.; El-Sharief, Mahmoud A.; Yusof, Farazila

doi:10.1016/j.polymer.2012.06.032

Cited by 19 publications

(18 citation statements)

References 9 publications

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“…The compression curves produced during the mechanical testing regime were in good agreement with the literature, (Figure ), compressive stress–strain curves for NBR vulcanization filled with different CB concentration loadings. From the data presented, it could be inferred that the current BA samples tested could have a carbon black content <20%.…”

Section: Discussionsupporting

confidence: 88%

Polymeric seal degradation in nuclear power plants: Determination of physical and mechanical properties

Porter

Bezzina

Clegg

et al. 2017

J of Applied Polymer Sci

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o assess the suitability of different materials as polymeric seals in the Nuclear Industry three commercial samples of nitrile rubber at grades BA40, BA50, and BA60 have been tested. Differential scanning calorimetry was used to find the glass transition temperature (Tg) and a Lloyds Texture Analyser 500 (TA500) was used to find the ratio of energy returned during relaxation against energy applied during compression. The mechanical properties determined from these experiments were then compared against the materials infrared spectra to infer structural characteristics. These were in turn cross-analyzed against the materials ability to swell in a liquid solvent and absorption behavior in a gaseous solvent. From this information, a statement could be made about each material's capacity to perform as a seal. It was thus found that the high energy retention and low absorption characteristics of BA40 made this material the best choice out of those studied for use as a polymeric seal in the nuclear industry

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Section: Discussionsupporting

confidence: 88%

Polymeric seal degradation in nuclear power plants: Determination of physical and mechanical properties

Porter

Bezzina

Clegg

et al. 2017

J of Applied Polymer Sci

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“…The current situation is not conducive to the popularization of this solution, due to the lack of information concerning the rules for designing such springs and the influence of geometrical and material parameters on their operating properties. The static and dynamic properties of metalrubber torsion springs depend on their geometry and the composi-tion of the rubber compound (Samaca Martinez et al, 2013;Hassan et al, 2012;Chokanandsombat and Sirisinha, 2013) used to manufacture working cylinders. By making modifications in these two fields, one can obtain such spring properties that are most suitable in certain applications.…”

Section: Fig1 Examples Of Typical Applications Of Neidhart Springs:mentioning

confidence: 99%

A Study of the Preload Force in Metal-Elastomer Torsion Springs

Sikora

Michalczyk

Machniewicz

2016

Acta Mechanica Et Automatica

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Neidhart type suspension units composed of metal-elastomer torsion springs can be a good alternative to steel helical springs in applications such as vibration absorbers or vehicle suspension systems. Assembling this type of spring requires initial preload of the elastomeric working elements, which determines their operating properties.The results of experimental tests and numerical simulations concerning the preload of elastomeric working elements in Neidhart type suspension units are presented in the paper. The performed research made it possible to propose a new calculation model for determining the preload force value acting on the elastomeric cylindrical elements applied in this type of suspension unit. The results obtained using the proposed model exhibit good convergence with FEM simulation results within the range of the tested geometrical and material properties.

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“…Moreover, the above fillers will consume large amounts of energy such as petroleum and natural gas and emit lots of heat and waste gas composed by the prime greenhouse gas of carbon dioxide and gaseous pollutants of sulfur dioxide and nitrogen oxide. This process would not only exacerbate tensions in the energy supply, but also pollute the environment . Sepiolite (Mg 8 (OH) 4 (Si 12 O 30 )· n H 2 O) is a strong candidate filler in rubber industry and widely exists in nature in the form of fiber assemblies .…”

Section: Introductionmentioning

confidence: 99%

Micromechanical modeling of large deformation in sepiolite reinforced rubber sealing composites under transverse tension

Zhang

2015

Polymer Composites

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This article presents an experimental and numerical study on mechanical behavior of sepiolite reinforced rubber sealing composites (SRRC), which are subjected to the transverse tensile loads. A finite element model of composites with fibers in square and random distribution is adopted for the numerical study. The representative volume elements with different fiber volume fraction are established and analyzed. A successive remeshing strategy is employed to achieve the large deformation of SRRC. The results show that the tensile strength and breaking elongation of SRRC can be improved by addition of sepiolite fiber, and they reach a maximum at 42% fiber volume fraction. The stress‐strain curve of SRRC with fibers in the random distribution agrees well with that measured in the experiments. However, there exists a significant difference between experimental and numerical results as fiber volume fraction increases. POLYM. COMPOS., 38:381–388, 2017. © 2015 Society of Plastics Engineers

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Evaluation of the material constants of nitrile butadiene rubbers (NBRs) with different carbon black loading (CB): FE-simulation and experimental

Cited by 19 publications

References 9 publications

Polymeric seal degradation in nuclear power plants: Determination of physical and mechanical properties

Polymeric seal degradation in nuclear power plants: Determination of physical and mechanical properties

A Study of the Preload Force in Metal-Elastomer Torsion Springs

Micromechanical modeling of large deformation in sepiolite reinforced rubber sealing composites under transverse tension

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