V.A. Grigoriev, Dr. Sc. (Engineering), Head of Department of ZAO MNITI;
Yu.T. Larin, Dr. Sc. (Engineering), General Director of OOO VNIIKP-OPTIC;
A.G. Letyago, Dr. Sc. (Engineering), Adviser to General Director of ZAO MNITI, Corresponding Member of the Russian Academy of Sciences, Laureate of State Prize of the RF;
A.N. Mart’yanov, Dr. Sc. (Engineering), Professor of Peter the Great Military Academy;
V.I. Pryadko, Dr. Sc. (Engineering), First Deputy General Director of ZAO “Evrika”, Laureate of State Prize of the RF;
A.A. Rakhmanov, Dr. Sc. (Engineering), Professor, Deputy Chief Designer of OOO RTI
Some issues of using the theory of optical transmission lines in physical quantity measurement
The theory of optical transmission lines is extended to cover the field of physical quantity converters and is used to obtain the conversion function of fiber optic pressure sensors with transmitting-receiving channel based on quartz- quartz type fiber-optic waveguides.
Optical transmission line, fiber optic pressure sensor, fiber optic
V.S. Vysotsky, Dr. Sc. (Engineering), Head of Division; V.V. Zubko, Cand. Sc. (Physics and Mathematics), Leading Researcher;
D.V. Sotnikov, Post-Graduate, Junior Research Assistant;
I.P. Radchenko, Research Assistant; S.S. Fetisov, Cand. Sc. (Engineering), Deputy Head of Division, Head of Laboratory;
Influence of transport current direction and external magnetic field polarity on the critical current value of 2G high temperature superconducting tapes
The paper describes the specific behavior of the critical current of HTSC tapes depending on the transport current and external magnetic field polarities. It is shown that due to the nonuniform distribution of current densities in 2G HTSC tapes the critical current will be different depending on the direction of Lorentz force. The authors come to a conclusion that in order to maximize the effective use of 2G HTSC tapes in installations it is necessary first to determine in what direction to pass the transport current along the tape, since the right choice of the direction will enable the manufacturers to make a product with the critical current value up to 10 % and higher.
HTSC tape, external magnetic field polarity, critical current
E.I. Mironov, Cand. Sc. (Engineering), Leading Researcher of JSC VNIIKP
The use of extreme value statistics in the investigation of breakdown strength of high voltage power cables
Through the example of XLPE high voltage power cable the authors analyze some possible and presently applied variants of calculating the parameters of Weibull distribution used in the assessment of quality, reliability and service life of cables.
Extremum value, statistic, XLPE, reliability, quality, cable