Search results for: A. Chugreev

Items from 1 to 12 out of 12 results

article

Fabrication of piston pins made of a novel aluminium-alloyed UHC steel

B.-A. Behrens, A. Chugreev, M. Kazhai, D. Yarcu, more

The International Journal of Advanced Manufacturing Technology > 2019 > 102 > 9-12 > 3781-3789

The vehicle industry strives for weight reduction in order to reduce fuel consumption. This leads to the development of new steel grades that are enriched with light metals, such as aluminium. In addition to the reduction in density, this means that the properties of conventional steels need to be at least replaced or ideally even surpassed. In the present work, a novel material, ultra-high-carbon...

article

Numerical Investigation of the Oxide Scale Deformation Behaviour with Consideration of Carbon Content during Hot Forging

B.-A. Behrens, R. Kawalla, B. Awiszus, A. Bouguecha, more

Procedia Engineering > 2017 > 207 > C > 526-531

Due to increasing product requirements the numerical simulation has become a powerful tool for the effective and efficient design of individual process steps as well as entire process chains. In order to model hot forging processes with finite element based numerical methods realistic models are required which consider the detailed mathematical description of the material behaviour during the forging...

article

Experimental investigations on the transformation-induced plasticity in a high tensile steel under varying thermo-mechanical loading

B. -A. Behrens, A. Bouguecha, C. Bonk, A. Chugreev

Computer Methods in Materials Science > 2017 > Vol. 17, No. 1 > 36--43

Transformation-induced plasticity (TRIP) also known as transformation plasticity (TP) occurs during solid state phase transformation in the case of applied stress and may lead to irreversible macroscopic distortions in steel components after heat treatment. Particularly, in the context of cost-efficient hot forging, where heat treatment is integrated in the process chain, various complex stress states...

article

Development and Application of a New Type of Separators for Supercritical and Ultra-Supercritical Once-Through Boilers

A. A. Bakhromkina, A. L. Shvarts, A. A. Chugreev

Power Technology and Engineering > 2015 > 48 > 6 > 475-479

The design of start-up separators for domestic once-through boilers is analyzed, and start-up separators of foreign-made boilers are reviewed. A design procedure and engineering solutions for a new type of start-up separators with top steam outlet and drain header are presented.

article

Development and operation of unit 3 at the Kashira GRÉS

S. F. Torkhunov, A. L. Shvarts, G. D. Avrutsky, E. Kh. Verbovetskii, more

Power Technology and Engineering > 2012 > 46 > 4 > 289-297

Initial results on the development and operation of the 330 MW pulverized-coal fired unit at the Kashira GRÉS are reported. The major performance indices are close to the design values. The remaining unsolved issues are singled out.

article

Full-scale testing of new technical solutions for a furnace water-wall system and full-opening separator for a P-50R boiler of a 330-MW power unit

A. L. Shvarts, A. A. Chugreev, O. B. Ott

Power Technology and Engineering > 2011 > 45 > 4 > 297-304

Technical solutions for the hydraulic layout of the water-steam circuit and a new type of starting separator for the P-50R boiler of the No. 3 power unit at the Kashirskaya SRPP, as well as and results of their in-service confirmation are presented.

chapter

Recent developments in photonic crystal fibres

N.Y. Joly, A. Chugreev, T.G. Euser, H. Hundertmark, more

2009 Conference on Lasers&Electro Optics&The Pacific Rim Conference on Lasers and Electro-Optics > 1 - 2

2009 Conference on Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PACIFIC RIM)

In photonic crystal fibres (PCF), light propagates in either a solid or hollow-core surrounded by a periodic microstructured cladding, which greatly affects its optical properties. We will report recent results for both types of PCF.

chapter

Generation of subnanosecond solitary pulses by backward stimulated Raman scattering in hydrogen-filled photonic crystal fibres

A. Abdolvand, A. Chugreev, A. Nazarkin, C.F. Kaminski, more

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference > 1

2009 Conference on Lasers & Electro-Optics Europe & 11th European Quantum Electronics Conference (CLEO/EQEC)

Here we report the observation of soliton-like pulses generated by BSRS in a gas-filled photonic crystal fiber (HC-PCF). The excellent performance of HC-PCF for SRS studies was shown recently in the quasi CW-regime. In the present experiment, we have observed high energy pulses of duration (0.7 ns) significantly shorter than the irreversible phase relaxation time T2 of the Raman transition. The fact...

chapter

Interplay of molecular modulation technique and stimulated raman scattering for generation of ultra-broadband radiation

A.M. Burzo, A. Chugreev, A.V. Sokolov

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference > 1 - 2

2006 Conference on Lasers & Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS)

Simultaneous rotational and vibrational Raman generation was observed in cooled deuterium gas. Strong vibrational generation leads unexpectedly to efficient rotational generation, while under different conditions the vibrational generation may suppress a self-starting stimulated rotational generation.

article

Reverse saturable absorption of fullerodendrimers in porous SiO ₂ sol-gel matrices

G. Kopitkovas, A. Chugreev, J.F. Nierengarten, Y. Rio, more

Optical Materials > 2004 > 27 > 2 > 285-291

The non-linear absorption properties and the dynamics of porous sol-gel SiO ₂ glasses, doped with fullerodendrimers, i.e., fullerene derivatives functionalized with dendritic branches have been investigated using a double-pump-probe technique. A frequency doubled mode locked Nd:YAG laser (25 ps (FHWM), 532 nm) was applied as irradiation source. A reverse saturable absorption (induced absorption)...

article

Reverse Saturable Optical Absorption of C₆₀, Soluble Methanofullerenes, and Fullerodendrimers in Sol-Gel Mesoporous Silica Host Matrices

Y. Rio, D. Felder, G. Kopitkovas, A. Chugreev, more

Journal of Sol-Gel Science and Technology > 2003 > 26 > 1-3 > 625-628

Porous sol-gel glasses with various pore size distributions are prepared and either impregnated with pure C₆₀ or soaked with methanofullerenes or fullerodendrimers derivative solution. Induced absorption or “reverse saturable absorption” (RSA) has been studied in both types of solid materials. The samples impregnated by pure C₆₀ mainly contain well-dispersed fullerene molecules. Unlike crystalline...

article

General Design Features of the Four-Meter Isochronous Cyclotron at Dubna with a Smoothly Variable Heavy Ion Energy

I. A. Shelaev, E. D. Vorobiev, B. A. Zager, S. I. Kozlov, more

IEEE Transactions on Nuclear Science > 1971 > 18 > 3 > 332 - 334

The four-meter isochronous cyclotron at JINR is being constructed for accelerating intense beams of heavy ions with A/Z ratio of 3.5 to 25 proton units and a smoothly variable energy within the range of 400-625 Z2/A MeV. Basic physical parameters and ideas of this accelerator are presented.

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: A. Chugreev

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options