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Katunin, A. I.; Козырев, Н. А.; Obsharov, M. V.; Timmerman, N. N.; Sychev, P. E.

doi:10.1023/a:1010457323530

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…The modified Arrhenius relationship could be used for the determination of the non-stationary self-heating temperature evolution. The models of the self-heating effect studied in previous works 3,11,12 will be fulfilled by the additional criterion and allow predicting the evolution more accurately. Considering the modified Arrhenius relationship, the master curves for complex, storage and loss moduli were constructed.…”

Section: Introductionmentioning

confidence: 99%

Influence of heating rate on evolution of dynamic properties of polymeric laminates

Katunin

Gnatowski

2012

Plastics, Rubber and Composites

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The most common description of the mechanical behaviour of viscoelastic materials is presented using complex dynamic properties. These properties depend on many external factors (temperature, excitation frequency, etc.) and determine the evolution of derivative effects in the structure. The purpose of the conducted investigations is the determination of the influence of heating rate on the dynamic mechanical behaviour of a polymer based composite material under different excitation frequencies and temperatures. The glass transition temperatures and the activation energies of the phase transition were calculated, which allow extending the Arrhenius equation by the heating rate factor. The obtained dependencies could be useful for the estimation of the mechanical and thermal degradations of polymeric composites and, among others, for the determination of the self-heating temperature distributions and their evolution during cyclic loading. The presented results could also be applied for the determination of fatigue, crack growth and residual life of composite structures.

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Section: Introductionmentioning

confidence: 99%

Influence of heating rate on evolution of dynamic properties of polymeric laminates

Katunin

Gnatowski

2012

Plastics, Rubber and Composites

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A study on the influence of the ratio of pig iron and metal scrap in the of electric melting charge on the technical and economic performances of the rail steel production

Umansky

Dumova

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Integrated influence of melting parameters of rail steel on rail products quality and technical and economic indicators of the production

Yur’ev

Dumova

2018

Izv. vysš. učebn. zaved., Čern. metall.

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Analysis of literature and production data has shown that despite the significant improvement in quality of domestic rail products, achieved in the last decade due to fundamental technical re-equipment of rail production, there is a problem of increased rejection of rails for surface defects. Based on studies of influence of rail steel chemical composition on quality of rails produced by «EVRAZ ZSMK», there was established a significant effect of increasing copper content in the range of 0.07 - 0.15 % and of sulfur - in the range of 0.006 - 0.011 % in E76KhF steel to increase rejection caused by rail surface defects. Mechanism of the influence of these elements concentration in rail steel on finished rails quality was revealed. Decisive influence of ratio of pig iron and scrap in metal charge on copper and sulfur content in rail steel was evidenced - higher rate of cast iron in metal charge within 20 - 50 % contributes to decrease of copper concentration and increase of sulfur content. To justify optimal composition of the charge for rail steel melting in regard to rail products quality and technical and economic indicators of production, study of the effect of cast iron (liquid and solid) to scrap ratio in metal charge on basic parameters of furnaces’ operation was conducted. As a result, it was found that with an increase in share of both liquid and solid iron in metal charge, there are linear decrease in specific electricity consumption, increase in specific oxygen consumption according to parabolic law and a linear decrease in manganese content in furnace output. The obtained dependences of melting duration on ratio of charge components in metal charge indicates presence of prominent minimum, when using liquid iron in the range of 35 - 40 %, and when using solid iron - in the range of 30 - 35 %. Based on the regression equations, statistical model was constructed for the influence of metal charge composition on technical and economic performance of the melt charge in rail steel smelting, in which optimization parameters are: total cost, depending on the metal stock composition and performance of the shop for suitable billets produced by continuous casting. Application of the obtained model allows to develop reasonable recommendations on the optimal proportion of iron in the metal for current level of prices for materials and energy used in electric smelting, taking into account changes in the shop productivity.

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Cited by 3 publications

References 1 publication

Influence of heating rate on evolution of dynamic properties of polymeric laminates

Influence of heating rate on evolution of dynamic properties of polymeric laminates

A study on the influence of the ratio of pig iron and metal scrap in the of electric melting charge on the technical and economic performances of the rail steel production

Integrated influence of melting parameters of rail steel on rail products quality and technical and economic indicators of the production

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