Setting-up
of the problem Of mathematical modeling of the process of inflation by the
example of the data for
Bidjuk P.I.,
Gogoladze N.G. and Sokhadze G.A.
Technical University KPI,
A.
A model of autoregression for the process of inflation
in transitional economy is
considered. The proposed model allows making predictions a few steps ahead. The
model was constructed on the bases of the data for
Keywords: inflation, mathematical model, autoregression, prediction.
Formulae of extrapolation and filtrations of partially observed
solutions of functional-Differential equations with random disturbance: part III
Sokhadze G.A.
A.
Stochastic differential equations in the Hilbert
space are considered. For the solution of such equations, there are given
explicit formulae for computation of the prediction by partial observations.
Keywords: extrapolation, stochastic
equations, Hilbert space, prediction.
Summary
on the equivalence of distribution of the solutions to hyperbolic
equations with random disturbances
Sokhadze G.A.
A.
Hyperbolic differential equations with random
right-hand parts and nonlinerarities are considered. For distribution of the
solutions to such equations, the conditions of smoothness in reference to a
simpler measure were determined,
and the corresponding Randon-Nikodim density was computed.
Keywords: Randon-Nikodim density,
nonlinearity, random disturbance, hyperbolic equations.
on the equivalence of distribution of the solutions to hyperbolic
equations with random disturbances
Sokhadze G.A.
A.
Hyperbolic differential equations with random
right-hand parts and nonlinerarities are considered. For distribution of the
solutions to such equations, the conditions of smoothness in reference to a
simpler measure were determined,
and the corresponding Randon-Nikodim density was computed.
Keywords: Randon-Nikodim density,
nonlinearity, random disturbance, hyperbolic equations.
a
plausible model of the structure of matter and the origin of the universe
Garibashvili D.I.
Department of
Informatics at the Presidium of the
There is proposed the hypothesis that elementary
particles are bunches of waves originated by the same mechanism as solitons,
vortices in liquids and gases, shock waves etc. By applying the Theory of
Chaotic Inflation of the Universe to the description of the microcosm, there is
made the assumption that at the densities of potential energy exceeding the Planck
density, stationary states could be elementary particles. A hypothesis about
the physical process which has caused the Big Bang and about the origin of the
Black Energy in space is proposed.
Keywords: structure of matter,
elementary partricles, origin of
the Universe, the Big Bang, the Black Energy.
MAGNETIC FIELD TOPOLOGY AND
MHD WAVE SPECTRA IN THE STAGNATION ZONE IN FRONT OF EARTH’S MAGNETOSPHERE
Kereselidze Z.А., Kirtskhalia V.G., Chkhitunidze M.S., Khantadze A.G., Zhonzhonladze
N.I. and Gabisonia I.A.
I. Vekua Sukhumi Institute
of Physics and Technology
M. Nodia Institute of
Geophysics
The topological similarity of the stagnation zone in
front of Earth’s magnetosphere to the pointed magnetic surface with a
singular point is discussed. On the stagnation zone surface, there is
considered the interaction between the interplanetary magnetic field and the
model toroidal field with the resulting formation of a screw-like magnetic
structure. It is demonstrated that the lead of the screw of the total magnetic
field depends on the opening of the approximating cone of the stagnation zone.
Thus, the base area of the stagnation zone, where the magnetic lines of force
practically coincide with the lines of force of the interplanetary magnetic
field, is disturbed at most. There was recorded the spectrum of MHD waves
frequency in the particular case when small disturbances propagated towards the
interplanetary magnetic field. This spectrum is rather narrow, and it includes
the cyclotronic frequency of protons near the magnetospheric boundary, which
makes more probable the resonance enhancement effect of MHD waves in the
stagnation zone base.
Keywords: interplanetary magnetic
field, magnetosphere, stagnation zone, singular point of magnetic field.
THE ANALYSIS OF METROLOGICAL FEATURES OF the HOMODYNE METHOD
OF FREQUENCY TRANSFORMATION
Gimpilevich Yu.B., Shirokov I.B. and Jandieri G.V.
Abstract. In the article, there is
presented the analysis of operation of the homodyne frequency converter, where
the probing signal is formed from the initial signal by introduction of the
monotonously changing phase shift into it by using the phase shifter. Such an
approach leads to the phase shift of the initial signal with preservation of
its initial phase. At multiplication of the initial signal and the signal
shifted in frequency, the initial frequency and the initial phase of signals cancel
each other, and, at the frequency converter output, there is formed the signal
of difference frequency equal to the shift frequency and with the phase shift
determined by the quadripole under study. The degree of agreement of the law of
changing of the phase shift
introduced by the phase shifter with the linear one determines the spectral
frequency of the probing signal. There is given the analysis of converter
errors at inaccurate setting of the phase shift introduced by the phase shifter
for the interval of the controlling signal and at deviation of the law of phase
changing from the linear one.
keywords: frequency trans formation,
homodyne frequency converter, metrological features.
MHD-FLOW
of the conducting liquid in ducts with the account for finite conductivity of
walls
Tsutskiridze V.N.
The steady flow of conducting liquid in rectangular
ducts with arbitrary conductivity of walls in the presence of transverse
magnetic field was studied using the variational method of investigation. The
obtained results are applied particularly for the determination of viscous and
ohmic losses in the MHD-converter.
Keywords: flow, conducting liquid,
duct, conditivity of walls, viscosity.
UNSTEADY FLOW OF THE VISCOUS FLUID CONTAINED BETWEEN
TWO
CONCENTRIC SPHERES OF
RADII r=
AND r=b(<b)
Tsutskiridze
V.N.
Abstract: The inlet laminar flow of viscous fluid between two concentric spheres is
discussed. It is assumed that the velocity of the fluid is uniform at the inlet
cross-section.
Keywords: unsteady flow, viscous fluid, concentric spheres.
Initiation of Scattering and Capture of
Electrons by Deep Centers Excited by Localization of Longitudinal Acoustic
Oscillations of Main Atoms at T=4.2K
Kutubidze
B.V., Chikovani R.I., Mkheidze T.D., Goderdzishvili G.I. and Janelidze O.M.
The results of investigation of
the properties of undoped GaS crystals, produced by the method of impact
ionization, at 4.2K are discussed.
There is propesed a model
according to which the localization of energy of longitudinal acoustic
oscillations of basic atoms of the lattice on the deep center causes the
lowering of symmetry and origination of dispersed interrelation, which and
results in capturing and scattering
of electrons at 4.2K, correspondingly.
Keywords:
initiation of scattering, capture of electons, deep centers, basic atoms,
acoustic oscillations.
Does the
report about the discovery of “perpetual motor of the universe”
correlate with the absolute energoinformation principle of conservation in the
universe?
Khvedelidze M.A.
The recent sensational report about the discovery of “perpetual
motor of the Universe” is discussed. It is noted that this report justifies that the “ancient”
energy of the Universe has not changed. This means that, the law of
conservation of energy in the Universe correlates with the law of duality of
energy and structural information. It is claimed that as the Universe grows,
“the perpetual motor” becomes more powerful.
Keywords: the Universe, energoinformaiton principle of conservation, perpetual
motion.
THE INFLUENCE OF THE DISSOLUTION KINETICS OF
VARIOUS FORMS OF CARBON IN Ni-Mg
MELTS
ON
THE DIAMOND FORMATION PROCESS
Loladze N.T., Tserodze M.P. and
Berdzenishvili I.D.
Abstract. The kinetics of the
interaction of graphites
МГ-ОСЧ and МПГ-6 with the Ni-Mn
melt was investigated at high pressures (P
= 4O kBar) in the temperature range of 1430—1530 K. The obvious correlation between the kinetics
of dissolution of these graphites
in the Ni-Mn melts and the diamond crystallization in the Ni-Mn-Cgraph.
system, was established.
Keywords: metal-graphite system,
dissolution kinetics, diamond synthesis, diamond formation, number of
crystallization centers.
Identification
of the relations among some constituents of atmospheric pollution
Kachiashvili K.I.,
Tsintsadze G.V. and Kutsiava N.A.
It is essential to know the relations among the
parameters of the environment, as it allows determining the value of one of
them by the given value of other, controlling the measurement accuracy of these
parameters etc. In this work, the relation
between the concentration of ammonia in the environment and the average
monthly concentrations of nitrogen dioxide and carbon oxide is restored by the
methods of regression analysis. The experimental results have justified the
validity of the restored relations.
Keywords: environment, regression
analysis, experimental data, prediction.
Dependence
of the atmospheric pollution on the frequency of failures of ammonia production
facilities
Kachiashvili K.I.,
Tsintsadze G.V. and Kutsiava N.A.
The effect of the frequency of failures of ammonia
production on the indices of atmospheric pollution is discussed. The
dependences of average monthly concentrations of ammonia, nitrogen dioxide and
carbon oxide on the monthly frequency of failures of the plant for production
of nonconcentrated nitric acid were determined.
Keywords: atmospheric pollution, frequency of failures, ammonia production,
regression model.
Laser analysis of molecular biomarkers for medical
diagnosis
Davarashvili
I.O., Agaev F.F. and Aliev A.V.
Institute
of Pulmonary Diseases,
Some physiological processes
are analyzed. The possibility of diagnosis of some diseases by CO molecule
content in the expiratory air using tunable semiconductor lasers is discussed.
It is demonstrated that under physical load, at bronchitis, pulmonary fibrosis,
bronchial asthma and liver affections, the excretion of CO differs
significantly from the norm.
Keywords:
medicine, diagnosis, biomarkers, pulmonary diseases, tunable semiconductor
laser.
THE RESULTS OF ECOCHEMICAL
STUDY ON The TERRITORIES of FORMER MILITARY BASES IN
Supatashvili G.D., Supatashvili
D.G., Zakariadze N.G., Butkhuzi T.G. and
Khachidze R.M.
Iv.
GEO-ECO TAO NGO
Abstract. The results of ecochemical analysis of the
territories, of former Soviet Military Bases used to be located in
Keywords; environmental pollution, soils, heavy metals,
trinitrotoluene, military waste, utilization.
STUDY on the content of rocket propellant components ON the
TERRITORies OF FORMER
MILITARY BASES IN
Supatashvili G.D., Zakariadze
N.G., Davitaia T. N., Supatashvili D.G. and Butkhuzi T.G.,
Iv.
GEO-ECO TAO NGO
Abstract. The content of oxidizing
components of liquid rocket propellant was studied in surface water and soil
samples collected on the territories of former military bases in
Keywords: environmental pollution, melange, amines, phosphates,
contaminated zone.
Investigation of the gallstone by Electron Spin Resonance
Chikvaidze
E.N. and Miminoshvili A.A.
Iv.
Sukhumi Branch of Tbilisi State University
In this work the data on the investigation of gallstones by
the electron spin resonance (ESR) method are presented. The spectral analysis
of different stones confirms the existence of paramagnetic ions and their
complexes. In particular the complexes of Mn2+ ions in large
concentrations exist in brown pigment stones. The ESR spectra of Fe2+ -
Cu2+ complexes with organic compounds were observed in black stones.
The ESR spectrum of free radical obtained from oxidated Bilirubin (a narrow singlet
with g=2.003) was observed in cholesterol stones(with content of cholesterol
> 50%) as well as in all investigated stones. It is supposed that the
centers of crystallization of gallstones are the products of radical
polymerization of bilirubin and
their complexes with metal ions.
Keywords:
gallstone, bilirubin, free radicals, electron spin resonance, analysis.
Application of the synergetic effect to extraction-photometric
determination of divalent metals in soil using pyridine azodyes
Grigalashvili
K.I., Kakabadze E.G., Mamulia S.G. and Dadianidze T.G.
Iv.
Bivalent metals Cu, Ni and Mn produce different
ligand complexes and associates with 4-(2-pyrdylazo)-resorcinol (PAR), diphenyl
guanidine (DPG) and ethanol, which can be used for extraction-photometric
determination of the mentioned metals in macrosystems. As a macrosystem,
natural unit-soil was selected. Extraction-photometric methods for simultaneous
determination of Cu(II), Ni(II) and Mn (II) were developed and tested with the
same soil sample and the same reagents. The suggested methods are characterized
by high sensitivity, selectivity and rapidity. The minimum determination limit
was -0.1 mg/ml and the optimal
standard deviation was Sr=1.0-1.5.
Keywords: divalent metals,
extraction-photometric determination, pyridine azodyes, synergetic effect.
Synthesis of New Heterocyclic
1,2-trans-Glycosides
Sidamonidze N.N., Ramishvili M.A., Gaprindashvili N.T.,
Bogveradze N.R. and Gakhokidze R.A.
Iv.
P. Melikishvili Institute of Physical and Organic Chemistry
The
reaction of condensation of a-chloro-2,3,4,6-tetra-O-acetyl-D-glucopyranose
and a-chloro-2,3,4,6-tetra-O-acetyl-D-galactopyranose
with heterocyclic compounds was studied.New derivatives of 1,2-trans-glycosides
were synthesized. Their structure was determined by physico-chemical methods of
analysis.
Keywords:
1,2-trans-glycosides, heterocyclic compounds, glycosides, condensation.
Synthesis and theoretical Investigation of sulfur-containing O-glucosides
Sidamonidze
N. N., Gaprindashvili N.T., Gverdtsiteli M.I., Vardiashvili R.O. and Isakadze
M.O.
Iv.
The reactions of
hydrosulfurization of 1-O-allyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose
by ethyl-, propyl- and n-buthylmencaptan were carried out. The synthesized
compounds were studied by physical-chemical methods, semi-empirical
quantum-chemical AM1 method and quasi-ANB- matrices method.
Keywords: hydrosulfurization, O-glucosides,
AM1 method, quasi-ANB- matrices method.
Algebraic-Chemical Investigation of Cycloalkanes within the Scope of
Quasi-ANB-Matrices Method
Lobjanidze
T.E. and Gverdtsiteli M.I.
Iv.
The algebraic - chemical investigation of
cycloalkanes was carried out within the scope of quasi-ANB-matrices method. The
correlation equations were derived using a computer. The calculations showed
that, according to Japphe’s criterion, the correlation was good.
Keywords: cycloalkanes,
quasi-ANB-matrices, correlation equations.
Problems
and methods of adsorption treatment of the surface of reservoirs, rivers, seas
and oceans from oil and oil products
Gajiev-Shengelia M.K.,
Papava G.S. and Bregvadze I.Z.
P. Melikishvili Institute of
Physical and Organic Chemistry
The article deals with the problems and the methods
of adsorption treatment of the surfaces of reservoirs, rivers, seas and oceans
from oil and oil products. The capabilities of inorganic, natural organic,
mineral organic and synthetic sorbents in respect to removal of oil and oil
products from the surfaces of abovementioned water bodies are discussed. The
topicality of this problem for the Georgian area of the Black Sea and the
importance of investigations of new sorbents on the base of various polymers,
natural inorganic sorbents and composites on their base, which are being
performed at the Laboratories of High-Molecular Compounds and Oil-Chemical
Processes of the
Keywords: oil, oil products, surface
waters, water treatment, survey.
A Device for purification
of oil- and fat-containing grey waters for the use at automobile laundries and
public catering establishments
Makharoblidze N.G.
There is proposed a
device (a filter) for the use at automobile laundries and public catering
establishments for local purification of waste waters containing oil products
and/or fats before their draining into the municipal sewage system.
Keywords: waste water, water treatment, oil products, fat,
automobile laundry, public catering establishment.
Establishment of the Optimal Conditions for production of extracts
frOm wild-growing raw materials
Guliashvili
M.A., Bagashvili I.B. and Mujiri
Research
Institute of Horticulture, Viticulture and Wine-making
The foodstuffs prepared on the basis of natural
materials are in great demand at the world market. In production of
high-quality and ecologically pure products, the application of natural
extracts from such natural a materials as wild berries occupies a prominent
place. The optimal conditions of production of extracts from elderberries,
raspberries, blackberries, red currants, bilberries, arrow-wood and ashberries
were established. The extraction was performed with the help of alcohol
extracted from tubers of topinambour. The moisture the mill quantity, the
ethanol concentration, the time of extraction and the module in berries were
determined. It was established that the extracts of wild-growing berries had
wide spectrum of biologically active substances and high organoleptical
properties. The extracts and their fractions can be successfully used in
different fields of food industry.
Keywords: food industry, extracts,
wild-growing berries, optimal conditions, wild-growing raw materils.
On the POSSIBILITY of Improvement of production of vermouth wines
made by using the extracts frOm wild-growing RAW materials
Guliashvili
M.A. and Mujiri L.A.
Research Institute
of Horticulture, Viticulture and Wine-Making
Among the aromatized wines, the widest distribution
has gained the vermouth. Besides the extracts from different parts of bitter
and spice-aromatic plants, the composition of vermouth wines also form ethyl
alcohol, saccharose, less-sugary color, liqueurs and etc. The goal of the
present work was making of new brands of vermouth wines using the extracts of
spice-aromatic plants, wild-growing raw materials, the ectracted
aqueous-alcoholic mixture of artichoke-topinambour. As the raw materials,
spice-aromatic plants and berries growing in
Keywords: wine, vermouth, extracts,
wild-growing raw materials,
production.
Nonstationary
Processes and the Dynamic friction coefficient
Purtskhvanidze G.N.
A.
The dynamic friction coefficient is considered as the
most universal parameter for estimating the losses in nonstationary flows. The
results of the study on the intake manifold of Kamaz engine are presented.
Keywords: dynamic friction
coefficient, nonstationary processes, intake manifold
Technology of voice communication via ip telephony
Adamia V.B.
and Arabuli N.V.
The technology of IP telephony is discussed. This
technology allows using the Internet or other IP network for international telephone
and fax communication in real time. The Internet telephony is a particular case
of IP telephony, when the Internet channels are used as telephone traffic
lines. The communication quality could be assessed by the degree of distortion
of voice, the frequency of voice packets and the delay time. The best-known
subjective method of assessment of the communication quality is the common
opinion. In this case, the quality of communication is assessed according to
the average estimation of the opinions of a large group of people.
Keywords: communication, voice
communication, IP telephony, the Internet, assessment.
Basic Stages of development of
telecommunication systems on the base of GSM Technology
Murjikneli G.G.,
Vekua T.A. and Meshvildishvili T.G.
The basic stages of development of novel telecommunication systems based on GSM (Global System for Mobile Communication) technology are discussed. Primary attention is given to the third-generation systems 3G. The principles of designing of such systems are considered.
Keywords: GSM technology, mobile communication, global system, third-generation systems.
Analysis of basic aspects of introduction
of the universal
Murjikneli G.G., Vekua T.A.,
Kharatidze T.M. and Davitashvili N.A.
The
basic problems of introduction of the universal mobile telecommunication system
(UMTS) are discussed. The introduction stages are described. The peculiarities
of introduction of the UMTS Terrestrie Radio Access (UTRA) are analyzed.
Keywords: mobile
telecommunication system, UMTS, UTRA.
A Technique of identification of
the phase-displacement group of three-phase transformer
Aburjania A.N., Begiashvili V.I. and Rezan Turan
Macroenergy Holding Company, Ltd.
Sarda
Corporation
Abstract. It is demonstrated that the
arbitrary choice of arbitrarily positive direction of induced currents and
voltages contradicts the energy conservation law and leads to equilibrium
equations and standards making no sense from the physical standpoint. Of 12
recognized standard phase-displacement groups of three-phase transformer, only
three have real physical bases. The rest are based on a wrong assumption about
mutual biasing of primary and secondary currents. They does not rule out the
occurrence of emergency situations and, thus, must be eliminated form use. A
new method of identification of the phase-displacement of three-phase
transformer is proposed. The method is based on well-known physical laws with
consideration for the dual character of the inertia of mutual inductance and
exhausts all possible versions of connection of transformer windings.
Keywords; three-phase transformer,
phase-displacement group, mutual inductance, inertial law, emf.
A New Method of Measurement of
Grounding Resistance
Aburjania A.N., Begiashvili V.I., Aburjania
Nachkebia Sh.Sh. and Museliani T.G.
Macroenergy Holding Company, Ltd,
Sarda Corporation
Abstract. It is demonstrated that the existing method of
grounding resistance measurement, measuring device M416 and the standard do not
comply with modern achievements of electrodynamics and conductometry. They do not
exclude emergencies and need to be removed from utilization. There have been
made essential errors: as if soil resistance was equal to zero and its
potential in 20 metres from the circuit depended only upon the grounding
resistance; primary and secondary electric currents of matching transformer
were equal and the measurement of the soil potential at the point, where
electric current density is equal to zero, enabled us to assess the grounding
circuit suitability. In summer drought and winter frost, when soil surface
resistance is relatively higher, field measurements by existing measuring
methods are entirely impossible, as the primary and secondary circuits are
practically disconnected. Erroneous measurements do not exclude emergencies and
disasters. There has been worked out a new method of grounding resistance
measurement which implies conducting the direct electric current via auxiliary
electrodes through the resistance to be measured; measuring of total resistance
between the grounding circuit and the auxiliary electrode based on the Ohm law,
under the conditions of three different but preliminarily known experiments;
construction of the set of equations with three unknown quantities, and
calculation of the grounding resistance by the method of exclusion.
Keywords: grounding resistance, grounding circuit, soil
resistance, measurement method.
Comparative
analysis of the results of descriptive modeling of the quality of potable water
Tsikhelashvili Z.I.,
Makharoblidze N.G. and Chkhartishvili I.A.
The state of the art of the problem of assessment
of water pollution is discussed. The results of critical analysis of the method
of “water pollution index” are presented. There is proposed the
methodology of application of psychophysical scales and appropriate criteria
for assessment of potable water quality in terms of Harrington function scales.
The procedure of construction of descriptive models is described. The
descriptive models of potable water quality were constructed using the maximum
permissible concentrations (MPC) of chemical components according to the data
of various international organizations. The comparative assessment of the
constructed models justified their applicability to generalized approximation
of the degree of pollution in the whole volume of polluted water.
Keywords: potable water, water
quality, water pollution, descriptive model, assessment.
On Binary Search Trees in
Databases
Kobiashvili A.A. and
Kutateladze R.G.
Abstract. One of important kinds of indexing of data in databases -
the B-tree is considered. The algorithm for searching for a particular value in
the B-tree is described. The B-tree insertion/deletion algorithm is offered.
Keywords: database, B-tree, multilevel index, index set.
Decision - Making in Management
Magradze M.D. and Avlokhashvili
E.N.
Abstract. The article deals with the issues of
decision-making in management. A broad interpretation of the notion a
“manager” is given. The primary role of manager’s decision is
shown. The process of decision-making and the basic principles of
decision-making in management are described.
Keywords: management, decision-making, choice.
Transformation
coefficient of the single-phase transformer in electric Balancing Circuits of
measuring transducers
Museliani T.G. and
Rochikashvili E.G.
On the basis of studies carried out earlier, there
was derived a true expression of the transformation coefficient of the
single-phase double-wound air-core transformer, which is used in electric
balancing circuits. The obtained transformation coefficient differs in the
phase from the one used currently.
Keywords: transformation
coefficient, balancing circuit, sibgle-phase transformer, mutual induction.
The
Installation for Gun-powder recycling
Ramishvili J.V., Sordia
T.D., Charbadze D.M., Supatashvili D.G., Khachidze R.M. and Pirtskhalava D.A.
The block diagram and the description of the
installation for recycling of powder from utilized shells, are presented. The
tubular powder of 10-mm diameter, removed
form the shells is heated up to 700C and cut into sections of
length 10-12mm. In such a form, the powder can be used for blasting at
quarries, open cuts and so on.
Keywords: shell, powder, recycling,
installation.
Investigation
of the process of rolling at force feed of the powder to rolls
Sharashenidze J.A. and
Ramishvili V.N.
F. Tavadze Institute of Metallurgy
and Materials Science
There was performed an experimental investigation of
the effect of horizontal rolling rate on the thickness and the density of the
porous strip at free and force feed of the powder to rolls. It was revealed
that the rolling with force feed of the powder allowed increasing the thickness
and the density of the strip at high rolling rate without increasing the
diameter of rolls and, thus, intensifying the process of rolling.
Keywords: rolling, powder, rolls,
force feed, rolling rate.
CONTACT HEAT EXCHANGE IN THE
GRAINED MATERIAL
Kevkhishvili N.A. and
Natsvlishvili T.Sh.
The problem of contact heat exchange in the grained
material is discussed. It is assumed that the grains have a spherical shape. The
computation results have shown that the heat resistance of the sphere at
first-kind boundary conditions differs significantly from the heat resistance
of the sphere with second-kind boundary conditions at contact angles a<20. Thus, determining the thermal
conductivity of the grained material, we cannot replace the contact heat
resistance of the sphere either by the heat resistance of the semibounded body
or by the heat resistance of the sphere with second-kind boundary conditions.
Keywords: contact heat exchange,
grained material, sphere, heat resistance.
On the possibility of designing the parts from textile with
consideration for forming properties of the material
Datuashvili
M.V., Sergeeva N.I. and Dolidze N.A.
A.
The state of the art of designing of multilayer
reinforcing textile shells is discussed. A new method of designing of
complex parts made form textile is
proposed. Based on the analysis of certain experimental results, the expediency
of the use of forming properties of textile materials in designing of textile
shells of complex shapes is justified.
Keywords: shell, textile shell, forming
properties, designing.
The investigation of the possibility of additional reinforcement of
multilayer textile shells by the technique of sewing through
Datuashvili
M.V., Dolidze N.A. and
Sergeeva N.I.
А.
There are given the recommendations on the technique
of sewing through of stationary multilayer textile shells for their additional
reinforcement. The technique consists in sewing of reinforcing thread through
the multilayer shell with the help
of a special hollow needle.
Keywords: shell, multilayer textile
shell, sewing through, reinforcement.