- Type of paper
: Book
Title: Woodworking Machinery and Tools
- Authors:
- Golja, Vlado (58473)
- Editors
- Sever, Stanislav
Publisher: Šumarski fakultet
ISBN: 953-6307-00-6
Year: 1994
Number of pages: 236
Number of references: 79
Language: hrvatski
- Type of paper
: Paper in journal
Title: Possibilities of Using Front Milling for Working Plane
Surfaces
- Authors:
- Golja, Vlado (58473)
Journal: Wood Industry & Economy Review - LES
Number: 5
ISSN: 0024-1067
Volume: 44
Year: 1992
Pages: from 197 to 202
Number of references: 11
Language: slovenski
Summary: The article presents a method of working plane surfaces by
front milling which is one of a group of standard metal working processes,
but is novelty as far as the application of cutting work in the machining
of wood is concerned.
Keywords: front milling, working plane milling, energy consumption standards for cutting work
- Type of paper
: Paper in journal
Title: Motor Saw Technical Characteristics - Choise and
Exploatation
- Authors:
- Golja, Vlado (58473)
Journal: Glasnik za šumske pokuse
Number: 4
ISSN: 0352-3861
Volume: 4
Year: 1993
Pages: from 289 to 294
Number of references: 16
Language: hrvatski
Summary: The paper review the problem of the chain saw choice in
professional use in the forestry of Republic of Croatia. Only the technical
parameters of the chain saws are discussed, giving a review of the
presently valid technical regulations in the field. All technical
parameters that are subject to change during exploitation. With this aim in
view, an extensive research project is carried out at the Faculty of
Forestry in Zagreb, Department of Mechanical Engineering. Already the first
measurement data analyses have yield valuable results.
Keywords: motor chain saw, choice and exploitation, technical regulations
- Type of paper
: Paper in journal
Title: Research in the Application of the Front Milling to the
Processing of Plain Surfaces
- Authors:
- Golja, Vlado (58473)
Journal: Drvna industrija
Number: 2
ISSN: 0012-6772
Volume: 4319
Year: 1992
Pages: from 54 to 61
Number of references: 8
Language: hrvatski
Summary: The paper deals with possibility of applying front molling
in processing of plain surfaces. The front milling process has been studied
on a "Rotoles"120-2V milling machine. During the test cutting force, feed
speed and working height before and after milling were measured.
Consequently the influence of the feed speed on the cutting force and the
specific cutting energy was determined. The relationship between the
workpiece height deviation and the feed speed, and the surface roughness
and the feed speed have also been determined.
Keywords: front milling, plane surface machining, specific cutting energy, roughness
- Type of paper
: Paper in journal
Title: The Yield of Sawlogs with the Special View Upon Certain
Elements of Sawing Quality
- Authors:
- Beljo, Ružica (179874)
Journal: Drvna industrija
Number: 3
ISSN: 0012-6772
Volume: 42
Year: 1991
Pages: from 69 to 76
Number of references: 15
Language: hrvatski
Summary: The paper gives a review and analysis of certain
investigation carried out so far, concerning the effect of specific factors
of procesing in sawmills that have an influence on the quantitative and
qualitative yield of raw material. The importance of the sawing quality has
been emphasized as a significant element in the quality of sawn boards and
volume effectiveness of sawlogs.
The investigations of effectiveness of oak sawlogs, that are of a lesser
quality, at sawing on the frame saw and band saw have been described and
the results have been given. The accuracy of sawing and the roughness of
the sawn surface on boards that had been produced on frame or band saws
have been measured and compared.
Keywords: yield of sawlogs, accuracy of sawing, roughness of the sawn surface
- Type of paper
: Paper in journal
Title: Testing of Some Chain Saws' Exploitation Characteristics
- Authors:
- Golja, Vlado (58473)
- Sever, Stanislav
- Horvat, Dubravko
- Risović, Stjepan (153996)
Journal: Mehanizacija šumarstva
Number: 4
ISSN: 0352-5406
Volume: 18
Year: 1993
Pages: from 205 to 208
Number of references: 12
Language: hrvatski
Summary: The monitoring of the chain saws' exploitation
characteristics can essentially contribute to the optimization of their
life time and also diminish the total cocst of forest utilization. At the
same time, the monitoring of both, the noise and vibrations levels and the
chain breaking time, increases the operator's safety considerably.
Therefore complex research work was on and several chain saw types of the
two most frequently used products in the Republic of Croatia. The condition
was that they were all used in forest utilization under the fairly same
conditions over the period of 1 to 4 years. At the same time, measurements
were carried out on the brand new chain saws, too. The following
exploitation characteristics have been measured: noise, vibrations on the
front and rear handles, chain breaking time, engine power and fuel
consumption.
Keywords: chain saws, exploitation characteristics, noise, vibrations, chain breaking time, engine power, fuel consumption
- Type of paper
: Paper in journal
Title: Some Problems in Forest Biomass Harnessing
- Authors:
- Golja, Vlado (58473)
- Sever, Stanislav
Journal: Mehanizacija šumarstva
Number: 3
ISSN: 0352-5406
Volume: 19
Year: 1994
Pages: from 193 to 199
Number of references: 11
Language: hrvatski
Summary: The paper discusses the possibilities of using wood
rests/waists for energetic purposes. An estimation of rest/waist wood
quantities and an analysis of wood characteristics compared to other fuels
is made.
Keywords: biomass, wood rests, wood waists, energy
- Type of paper
: Paper in journal
Title: Does ISO 7505 Provide for the Repeatability of
Measurements?
- Authors:
- Golja, Vlado (58473)
Journal: Mehanizacija šumarstva
Number: 1
ISSN: 0352-5406
Volume: 19
Year: 1994
Pages: from 39 to 44
Number of references: 14
Language: hrvatski
Summary: The paper presents a part of the vibrations level research
results obtained by measurements at the STIHL 044 AVEQ motor chain handles.
All the measurements were carried out in accordance with ISO 7505. Some
parameters that are not precisely defined in ISO 7505 were varied during
the measurements in order to study their influence on the vibrations level,
i.e. the repeatability of measurements carried out according to ISO 7505
recommendations. The length of the chain guide and chain strain were varied
and operators were taking turns at the motor chain saw. The results of
measurement show that the operator and the length of the chain guide
influence the vibrations level substantially. In other words, it means that
ISO 7505 does not provide for the repeatability of measurements.
Keywords: motor chain saw, vibrations, repeatability of measurements
- Type of paper
: Paper in journal
Title: Bio-power Plants: Fashion or Necessity
- Authors:
- Golja, Vlado (58473)
Journal: Mehanizacija šumarstva
Number: 3
ISSN: 0352-5406
Volume: 19
Year: 1994
Pages: from 213 to 216
Number of references: 3
Language: hrvatski
Summary: The paper discusses the main reasons for using bio-mass
for power production and describes the characteristics of the bio-mass and
combustions wastes. New tehnologies and facilities for using bio-mass in
power plants are also described.
Keywords: energetics, bio-mass
- Type of paper
: Paper in journal
Title: Improving of Wood Chips by Predrying
- Authors:
- Golja, Vlado (58473)
- Golja, Vlado (58473)
- Sever, Stanislav
Journal: Mehanizacija šumarstva
Number: 1
ISSN: 0352-5406
Volume: 20
Year: 1995
Pages: from 1 to 6
Number of references: 9
Language: hrvatski
Summary: The paper discusses the influence of the moisture content
on the wood chips heating characteristics and the possibilities of
improving its quality by predrying the wood chips in a container. The
predrying may be done using the heat energy obtained by wood burning or by
solar energy.
Keywords: wood chips, heating value, predrying, solar energy
- Type of paper
: Paper in journal
Title: Utilization of the Forest Wood Residuals for Wood Chip
Production for Heat Generators
- Authors:
- Golja, Vlado (58473)
- Golja, Vlado (58473)
- Sever, Stanislav
Journal: Mehanizacija šumarstva
Number: 4
ISSN: 0352-5406
Volume: 19
Year: 1994
Pages: from 269 to 275
Number of references: 12
Language: hrvatski
Summary: Compared to other fuels, petrol and petroleum products
offer quite a number of advantages. It is particuraly obvious in the
production of heat energy, so that now days of the steam power plants have
completely switched to those fuels, although sometimes for no objective
reason. Problems with prices and supply have now forced many petrol fueled
steam power plants to reconsider the return to the original fuels. However,
this time the preparations have to be taken much more seriously.
Keywords: wood residuals, chip production, heat generators
- Type of paper
: Paper in journal
Title: Some Characteristics of Means of Transport in Sawmill
Storages
- Authors:
- Beljo, Ružica (179874)
Journal: Drvna industrija
Number: 1
ISSN: 0012-6772
Volume: 45
Year: 1994
Pages: from 3 to 10
Number of references: 26
Language: hrvatski
Summary: The article analyzes the problems of handling material on
the sawmill log storage and lumber storage. It is known that logs and
lumber handling considerably participate in the expenses of sawmill
processing. The right selection of the most agreeable transport solution,
with regards to the technological and organisational demands of the given
production process, as well as the technical-exploitational features of
transport equipment, decreases expenses and enables the continuity of
production. With the analysis of transport solutions on the logs storage
and storage of lumber of the Lučice sawmill, the aim was to establish some
technological and technical features of the most frequently used transport
equipment for log and lumber handling.
Keywords: handling material, transport means, logs storage, storage of lumber
- Type of paper
: Paper in journal
Title: Energy and Economic Features of Gantry Crane at Log
Storage
- Authors:
- Beljo, Ružica (179874)
Journal: Drvna industrija
Number: 2
ISSN: 0012-6772
Volume: 45
Year: 1994
Pages: from 51 to 58
Number of references: 15
Language: hrvatski
Summary: The aim of this article was to establish some energy and
economic features of the gantry crane with carrying capacity 10 t,
operating at the log storage of Lučice sawmill. The investigation covered
the consumption of active and reactive electric energy, utilization of
installed electric motors, electric power of individual gantry crane
mechanisms depending on the transported load mass and driving speed, and
costs of a gantry crane working hour. It has been established that the
energy consumption of gantry crane participates with only 3,8 % in the
total sawmill consumption of electric energy. The energy costs also account
for a small part of the costs of a gantry crane working hour. It has been
evidenced that the crane operator can influence energy consumption. It has
been established that the utilization of the installed power is 0.25 and
only the electrical power of the lifting mechanism depends on the
transported load mass.
It is indicated that better work organisation with a larger gantry crane
output can decrease energy consumption and costs per working hour.
Keywords: gantry crane, energy consumption, electrical power, costs
- Type of paper
: Paper in journal
Title: A Contribution to the Feature Analysis of Wood Handling on
the Log Storage - the Contact Place of Forestry and Woodworking Industry
Transport Courses
- Authors:
- Beljo, Ružica (179874)
Journal: Mehanizacija šumarstva
Number: 1
ISSN: 0352-5406
Volume: 19
Year: 1994
Pages: from 45 to 55
Number of references: 23
Language: hrvatski
Summary: Log storage is the contact place of forestry and
woodworking industry transport courses. Storage log transport, as a
connection between log hauling and processing, has with its efficacity a
great influence on the continuity and efficiency of the woodprocessing from
the stump to the final wood products. Knowing the exploitational features,
especially the transport means productivity in the specific working
conditions, is an important factor for the choice of transport means. This
article analyzes the features of the most frequently used transport means
for wood handling on the central mechanized storages - gantry cranes and
loaders.
Keywords: log storage, wood handling, gantry crane, loader
- Type of paper
: Paper in journal
Title: Application of Hamm's Approximate Method of Electric Power
Determination for Transport Means Research
- Authors:
- Beljo, Ružica (179874)
- Korpilahti, Eva
Journal: Drvna industrija
Number: 1
ISSN: 0012-6772
Volume: 46
Year: 1995
Pages: from 75 to 79
Number of references: 12
Language: hrvatski
Summary: This paper presents Hamm's approximate method for
determination the consumed electric energy of three-phase asynchronous
induction electricmotors. The method gives brief and enough exact
information for making decision of advisable technical factors in working
conditions. The base of this approximate method is dependence of power
factor cos FI upon electricmotor load. Hamm has done for three
characteristic values of power factor (cos FI = 0,7; cos FI = 0,8; cos FI =
0,9) the diagram, based on empiric data, for determination of electric
power on the base of measured current. The method is presented with
practical example of determination specific consumed electric energy of
pneumatic and mechanical conveyor. Results of research have confirmed that
mechanical conveyor is more power favourable than pneumatic conveyor.
Keywords: consumed electric energy, pneumatic and mechanical conveyor
- Type of paper
: Paper in journal
Title: The Influence of Band Saw Strain Force on Idling Power
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
Journal: Drvna industrija
Number: 1
ISSN: 0012-6772
Volume: 46
Year: 1995
Pages: from 3 to 8
Number of references: 7
Language: hrvatski
Summary: Strain force is a very important parameter of the general
efficiency of the band saw. In order to point out the importance of the
strain force the paper presents research results of its influence on the
machine's idling power. As independent variables two parameters have been
chosen: the strain force and the cutting speed. References mention a wide
range (from 30 to 120 MPa) of optimum strain force values. The choice of
the optimum strain force value will therefore provide for the higher
efficiency of the band saw. For the purpose of the research described in
this paper the strain force was measured by the approximative method of
measurement. The power of the machine's own resistances was measured at
various strain forces. At each level of the strain force the cutting speed
has been varied by changing the rotation frequency of the electromotor. The
influence of the electromotor rotation frequency on the machine's idling
power is linear and expected, but the influence of the strain force cannot
be called linear, which is an unexpected result.
Keywords: band saw, strain force, cutting speed, idling power
- Type of paper
: Paper in journal
Title: Research of Noise Levels Emitted by Two-spindle Moulders
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
Journal: Drvna industrija
Number: 2
ISSN: 0012-6772
Volume: 46
Year: 1995
Pages: from 69 to 74
Number of references: 9
Language: hrvatski
Summary: The protection of the work environment from emitted noise,
vibrations, gases and dust is nowdays the production process designers'
main concern. This problem is gradually gaining adequate attention in
Croatia, too. The work environment protection problems are particularly
emphasized in the woodworking industry. At the Faculty of Forestry in
Zagreb noise and vibration protection is systematically studied for more
than 20 years now. The paper presents the results of routine measurements
regularly carried out at woodworking plants by researchers of the
Department for Mechanical Engineering of the Faculty of Forestry,
University of Zagreb.
The paper presents the results of the measured noise levels emitted by
two-spindle moulders. Because of the high level of the emitted noise, the
moulders were placed in a separate room. But, the small room volume and the
proximity of the reflecting surfaces resulted in a noise level
significantly above the noise level limits. The measurements covered all
positions of the operators. According to the results of the measurements
the operators should (depending on the position) not be exposed more than
1/4 to 1 hour without adequate personal protection.
In order to optimize the personal protection the octave band analysis was
carried out.
Keywords: noise, woodworking machinery, noise protection
- Type of paper
: Paper in journal
Title: A Contribution to the Study of Cutting Resistance of
Milled Beech
- Authors:
- Risović, Stjepan (153996)
Journal: Drvna industrija
Number: 3
ISSN: 0012-6772
Volume: 45
Year: 1994
Pages: from 83 to 89
Number of references: 12
Language: hrvatski
Summary: The paper presents the investigation results of woodworking
by milling. The experimental part has been carried out on multispindle
milling machines commonly used for wood processing by chip removing in the
woodworking industry. The two principles acknowledged were fully respected;
(1) the milling tools do not change their rotational frequency, nor their
position during milling and (2) the working piece moves at a constant
cutting speed at a single pass. The cutting speeds werw therefore measured
at each pass and the establishment of complex relationships refers to their
regression analysis, for four various milling depths.
Keywords: woodworking, beech, milling, cutting resistance
- Type of paper
: Paper in journal
Title: Optimization of the Woodworking Multispindle Milling
Machines Efficiency
- Authors:
- Risović, Stjepan (153996)
Journal: Glasnik za šumske pokuse
ISSN: 0352-3861
Volume: 32
Year: 1995
Pages: from 129 to 168
Number of references: 33
Language: hrvatski
Summary: The general milling efficiency is, on the one hand,
determining the woodworking optimum, and on the other hand it is
proportionate to the feed speed and specific width of the work piece. The
specific cutting resistances for beech are by about 55 % higher from those
determined for fir at the approximatively same feed speeds. The specific
cutting resistance and the average chip depths show approximatively the
same corelation for fir, but not for beech. The asymptotic value of the
specific cutting resistance is higher for beech than for fir. At milling
fir as the cutting depth decreases, the specific cutting resistance becomes
lower with the increase of the chip depth, which is not the case when
milling beech.
Keywords: optimization, efficiency, woodworking, milling
- Type of paper
: Paper in journal
Title: A Contribution to the Study of Cutting Resistance with
Machining of Fir
- Authors:
- Risović, Stjepan (153996)
Journal: Drvna industrija
ISSN: 0012-6772
Volume: 44
Year: 1993
Pages: from 123 to 130
Number of references: 29
Language: hrvatski
Summary: In accordance with the paper aims a complex study of the
wood processing by milling was done. All experiments were made by the
process of counterdirectional plane milling on multispindle milling
machines commonly used in woodworking industry. The chips removal cutting
tests on fir were carried out according to a previously established tests
plan. In the course of testing in addition to the milling direction,
temperature and wood moisture, also geometric and time parameters as well
as electric power were determined by measurements. The feed speed was
varied in the course of testing. The procedure was repeated for 4
different milling depths.
Keywords: wood maschining, fir , milling, cutting resistance
- Type of paper
: Paper in journal
Title: Wood Residue as Secondary Energy Agency
- Authors:
- Risović, Stjepan (153996)
Journal: Drvna industrija
Number: 4
ISSN: 0012-6772
Volume: 45
Year: 1994
Pages: from 135 to 141
Number of references: 15
Language: hrvatski
Summary: The author discusses potential exploitation of wood residue
in wooodworking industry as a secondary energy agency. In develoed
countries up to one hundred times more energy is used up today than et the
beginning of man's development (some 8 MJ per day). Exploitation of fossil
fuels as sources of energy has resulted in decreased reserves and increased
adverse effects on the environment. At the end of the work a wood residue
exploitation unit is described.
Keywords: biomass, wood residue, wood waste
- Type of paper
: Paper in journal
Title: Rational Production and Use of Energy with Special
Reference to Biomass
- Authors:
- Risović, Stjepan (153996)
- Sever, Stanislav
Journal: Mehanizacija šumarstva
Number: 1
ISSN: 0352-5406
Volume: 20
Year: 1995
Pages: from 17 to 21
Number of references: 29
Language: hrvatski
Summary: Wit conservation as the major target, the possibilities of
better utilization of the renewable energy sources are discussed in this
paper. For the time from 1990 until 2020 two percent yearly rate of
worldwide primary energy demand is estimated. The significance of the
forest biomass as fuel in many countries is closely associated with general
understanding of one's own energy situation. To present an energy estimate
from forest biomass, there is a review of species and assortments processde
in the wood-technological industries in Croatia.
Keywords: forest biomass, wood residue, energy
- Type of paper
: Paper in journal
Title: Mathematical Model for Determination of Heat Quantity of
Forest Biomass
- Authors:
- Sever, Stanislav
- Horvat, Dubravko
- Risović, Stjepan (153996)
- Horvat, Dubravko
Journal: Glasnik za šumske pokuse
Number: 4
ISSN: 0352-3861
Year: 1993
Pages: from 305 to 314
Language: hrvatski
- Type of paper
: Paper in journal
Title:
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
- Gnjilac, Damir
Journal: Arhiv za higijenu rada i toksikologiju
Number: 1
ISSN: 0004-1254
Volume: 46
Year: 1995
Pages: from 45 to 53
Number of references: 10
Language: engleski
Summary: The paper reports on the procedure and results of the
measurements of the airborne noise emitted by the ECOTRAC V-1033 F forest
tractor. The measurements were carried out in accordance with the
International Standards ISO 4872 and ISO 362 for the stationary test
condition. The paper reports furhter on noise measurements at the
operator's position on the same tractor type conducted in accordance with
the Interanional Standard ISO 5131 and ISO 6394. Results of the measurement
of noise emitted by the ECOTRAC V-1033F show that the noise didn't exceed
the noise level limits. Measurement results of noise emitted by the ECOTRAC
V- 1033 F at the operator's position at full load and at the nominal load
exceeded the noise limits.
Keywords: driver's cab, noise level, operating conditions
- Type of paper
: Paper in journal
Title:
- Authors:
- Golja, Vlado (58473)
- Risović, Stjepan (153996)
- Beljo, Ružica (179874)
Journal: Arhiv za higijenu rada i toksikologiju
Number: 1
ISSN: 0004-1254
Volume: 46
Year: 1995
Pages: from 33 to 44
Number of references: 9
Language: engleski
Summary: The paper reports and analyzes vibration measurement
results carried out on the handles of several orbital hand sanding
machines. Vibration were measured on front and rear handles of the FESTO
LRB-W1 and LRB-T1 orbital hand sanding machines and at two points on the
holding handle of the FESTO RTL-F1 fand sanding machine. The measured
levels of the weighted vibration accelerations were compared to the daily
exposure limits according to ISO 5349, ISO/TC 108/SC4/14 and NF E90-402.
According to the same standards daily exposures have been determined for
each sanding machine type.
Keywords: orbital hand sanding machines, vibrations, daily exposure limits
- Type of paper
: Paper in proceedings
Title: Higher Levels of Automatization on Log Band Saws
- Authors:
- Golja, Vlado (58473)
- Goja, Željko (13662)
Proceedings title: Les-drevo-ekologia
Language: engleski
Place: Zvolen, Čehoslovačka
Year: 1992
ISBN/ISSN: 80-228-0186-0
Pages: from 395 to 400
Meeting: Les - drevo - ekologia
Held: from 09/07/92 to 09/10/92
Summary: Automatization and automatic regulation have recently
beenincreasingly applied to woodworking machinery, too.Knowing thecourse of
develepment and the actual automatization level ofmachine tools, there is
strong reason to beive that there issimilar course of developement to be
expected in the field ofwoodworking machines.
Keywords: woodworking machinery, log band saw, automatization
- Type of paper
: Paper in proceedings
Title: Board Thicknes Variation Measuring System
- Authors:
- Golja, Vlado (58473)
- Risović, Stjepan (153996)
Proceedings title: Technologia v sprracovani dreva
Language: engleski
Place: Zvolen, Čehoslovačka
Year: 1992
ISBN/ISSN: 80-228-0186-0
Pages: from 381 to 387
Meeting: Les - drevo - ekologia
Held: from 09/07/92 to 09/10/92
Summary: The quality of sawn surfaces has been the subject of
numerousinvestigations. The quality itself is expressed by means ofvalues
of different parameters. One of the most important is thedeviation of the
board thickness from the nominal thickness.
The paper describes the board thickness deviationmeasuring systemdeveloped
at the Faculty of Forestry in Zagreb.
Keywords: measurement, board thickness variation
- Type of paper
: Paper in proceedings
Title: Forces Measurement Problems at Cutting Anisotropic
Materials
- Authors:
- Golja, Vlado (58473)
Proceedings title: Suvremeni trendovi proizvodnog strojarstva
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 115 to 122
Meeting: Suvremeni trendovi proizvodnog strojarstva
Held: from 05/20/92 to 05/23/92
Summary: The paper outlines soe problems of measurement of forces by
dataacquisition system at cutting anisotropic materials. Themeasurement
results reliability in relation to sampling frequencyis studied.
Keywords: cutting forces, anisotropic materials, data acquisition system
- Type of paper
: Paper in proceedings
Title: Some Problems of Continual Feed Movement at Wood Machining
by Planing
- Authors:
- Golja, Vlado (58473)
- Editors
- Cebalo, Roko
Proceedings title: CIM '93
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 45 to 52
Meeting: Savjetovanje proizvodnog strojarstva
Held: from 11/10/93 to 11/13/93
Summary: The paper deals with some problems occuring during
exploitation of machines for planing in woodworking industry. The problem
are caused by different rool speed due to feed rolls wear. To prevent roll
slip the use of adaptive feed rolls is suggested.
Keywords: wood machining, milling, feed movement, feed rolls
- Type of paper
: Paper in proceedings
Title: Automatisation der Intellektuellen Arbeit am Gebite dert
Erzeugnissenwiklung in kleinen Firmen
- Authors:
- Stefanović, Predrag (73896)
Proceedings title: BIAM '92
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 1 to 6
Meeting: BIAM '92
Held: from 06/11/92 to 06/14/92
Summary: The paper gives one of the posible method in introducing
CAD(Computer Aided Design) in small factories. The method isillustrated
with results obtain by investigation caried out inPrvomajska - Zagreb.
Keywords: software, computer aided design
- Type of paper
: Paper in proceedings
Title: Exposure to Hand-Arm Transmited Vibration with Light
Machinery used in Nurseries and Forest Extension Activities
- Authors:
- Golja, Vlado (58473)
Proceedings title: Les-drevo-ekologia
Language: engleski
Place: Zvolen, Čehoslovačka
Year: 1992
ISBN/ISSN: 80-228-0194-1
Pages: from 1 to 8
Meeting: Ekologicko-ekonomicky vyznom buka
Held: from 09/09/92 to 09/11/92
Summary: In order to determine the level of vibrations transmited to
theoperator extensive research on a motor cultivator was done.
Theinvestigations were caried out on the machinery testing site ofthe
Agricultural Faculty in Zagreb. The paper describes some ofthe
investigation results.
Keywords: hand-arm transmited vibration, motocultivator, nurseries and forest extennsion activities
- Type of paper
: Paper in proceedings
Title: Problems at Inplementing Higher Levels of Automatization
on Woodworking Maschinery
- Authors:
- Golja, Vlado (58473)
Proceedings title: Razvoj i perspektive finalne obrade drva
Language: hrvatski
Place: Zagreb
Year: 1991
Pages: from 51 to 59
Meeting: Razvoj i perspektive finalne obrade drva
Held: from 04/18/91 to 04/20/91
Keywords: automatization, woodworking maschinery
- Type of paper
: Paper in proceedings
Title: Research on Hand-arm Transmited Vibrations by Using Motor
Cultivator TypeIMT-506 LS
- Authors:
- Golja, Vlado (58473)
Proceedings title: Aktualni zadaci mehanizacije poljoprivrede
Language: hrvatski
Place: Pula
Year: 1991
Pages: from 367 to 380
Meeting: Aktuelni zadaci mehanizacije poljoprivrede
Held: from 02/19/91 to 02/21/92
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Golja, Vlado (58473)
- Editors
- Butković, Jurica
Proceedings title: Uključivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 77 to 80
Meeting: Uklučivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Held: from 05/11/94 to 05/12/94
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Beljo, Ružica (179874)
- Editors
- Butković, Jurica
Proceedings title: Uključivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 72 to 76
Meeting: Uklučivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Held: from 05/11/94 to 05/12/94
- Type of paper
: Paper in proceedings
Title: A Contribution to the Measurement of Noise Level Emitted
by the ECOTRAC V-1033 F tractor
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
- Editors
- Filipović, Dubravko
Proceedings title: Aktualni zadaci mehanizacije poljoprivrede
Language: hrvatski
Place: Zagreb
Year: 1995
ISBN/ISSN: 953-6135-08-6
Pages: from 76 to 83
Meeting: Aktualni zadaci mehanizacije poljoprivrede
Held: from 02/07/95 to 02/10/95
Summary: The paper describes the method and the results of emitted
noise measurements carried out according to ISO 4872, ISO 6393 and ISO 362.
The paper also reports the results of measurement of noice at the
operator's position which have been carried out according to ISO 5131 and
ISO 6394.
Keywords: tractor, noise, emitted noise, noise at operator's position
- Type of paper
: Paper in proceedings
Title: Operator Exposure to Noise in Woodworking Plants
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
Proceedings title: Zaštita na radu i zaštita od požara
Language: hrvatski
Place: Zagreb
Year: 1995
Meeting: I. hrvatski kongres Zaštite na radu i zaštite od požara
Held: from 06/01/95 to 06/02/95
Summary: The paper presents the noise level measurement results in
a typical woodworking plant. The measurements were performed at operators'
positions characteristic for the sawmill production as well as for some
usually found in woodworking industry. The measured noise level at all
measuring points was above the noise level limits. As the workers don't use
personal protection there is no doubt that the majority of them will suffer
permanent hearing damage.
Keywords: ergonomy, noise, mechanical woodworking
- Type of paper
: Paper in proceedings
Title: Efficiency Optimization at Wood Machining
- Authors:
- Golja, Vlado (58473)
- Risović, Stjepan (153996)
- Editors
- Cebalo, Roko
Proceedings title: CIM '93
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from D-33 to D-45
Meeting: Savjetovanje proizvodnog strojarstva
Held: from 11/10/93 to 11/13/93
Summary: The paper deals with the optimization procedure of the
technological process of wood machining by milling. Only the factors having
influence during the effective time (from the technically-technological
viewpoint) have been considered here.The goal function has been exemined
with regard to the existing restrictions.
Keywords: wood machining, milling, optimization, efficiency
- Type of paper
: Paper in proceedings
Title: A Contribution to the Study of Cutting Resistance of
Milled Beech
- Authors:
- Risović, Stjepan (153996)
- Editors
- Butković, Jurica
Proceedings title: Uključivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 51 to 54
Meeting: Uklučivanje znanosti u gospodarski sustav preradbe drva u Hrvatskoj
Held: from 05/11/94 to 05/12/94
- Type of paper
: Summary in proceedings
Title: Lateral Movement of the Band Saw Blade and Machine's Own
Resistance Power in Relation to the Strain Force
- Authors:
- Golja, Vlado (58473)
- Beljo, Ružica (179874)
- Editors
- Korpilahti, Eva
- Salonen, Tommi
- Oja, Seppo
Proceedings title: Caring for the Forest: Research in a Changing World
Language: engleski
Place: Tampere, Finska
Year: 1995
ISBN/ISSN: 951-40-1452-9
Pages: from 164 to 164
Meeting: IUFRO XX World Congress
Held: from 08/06/95 to 08/12/95
Summary: The lateral movement of the band saw blade reduces both the
quality of the saw surfaces, and the material yield. At the same time it
requires higher energy standards.The lateral movement of the band saw blade
and the machine's own resistances are significantly influenced by the
strain force of the blade. Both, the references and the band saw producers,
list a rather wide range of strain force values.
In order to determine the optimum strain force value for the given
machine-tool system, a very comprehensive research work was done at the
Faculty of Forestry, University of Zagreb. The strain force and the
rotation frequency of the driving wheel were chosen as independent
variables. The lateral displacement value of the band saw blade was
measured by inductive transducer. The machine's own resistances power was
measured by electric measuring instruments. The research yielded very
interesting results.
Keywords: band saw efficiency, blade lateral movement, machine's own resistance power, strain force
- Type of paper
: Summary in proceedings
Title: Parameters Influencing the Vibration Level of the Motor
Chain Saws
- Authors:
- Golja, Vlado (58473)
- Editors
- Korpilahti, Eva
- Salonen, Tommi
- Oja, Seppo
Proceedings title: Caring for the Forest: Research in a Changing World
Language: engleski
Place: Tampere, Finska
Year: 1995
ISBN/ISSN: 951-40-1451-0
Pages: from 232 to 232
Meeting: IUFRO XX World Congress
Held: from 08/06/95 to 08/12/95
Summary: It is a well known fact that the vibration level of the
motor chain saws is influenced by a large number of parameters. To provide
for repeatability and reproducibilty of the vibration level measurements,
the international standards seek to give a clear definition of the
measurement procedure for measuring vibrations on the motor chain saw
handles. Unfortunately, the measurements of the viration levels made in
various laboratiries on the same motor chain saw showed substantially
different results. In inevitably leads to the conclusion that the
measurement procedure does not control all the significant parameters
influencing the vibration level of the motor chain saws. It is therefore
necessary to do further research work into the quantification of the
factors of influence yet not mentioned by the international standards.
Bearing this in mind, a research work on motor chain saw vibration levels
was done at the Faculty of Forestry, University of Zagreb, Croatia.
Keywords: motor chain saws, vibration level measurements, international standards
- Type of paper
: Summary in proceedings
Title: Past and Future of the Forest Biomass Utilization in
Croatia
- Authors:
- Golja, Vlado (58473)
- Horvat, Dubravko
- Risović, Stjepan (153996)
- Sever, Stanislav
- Editors
- Korpilahti, Eva
- Salonen, Tommi
- Oja, Seppo
Proceedings title: Caring for the Forest: Research in a Changing World
Language: engleski
Place: Tampere, Finska
Year: 1995
ISBN/ISSN: 951-40-1452-9
Pages: from 124 to 124
Meeting: IUFRO XX World Congress
Held: from 08/06/95 to 08/12/95
Summary: The Croatian forest products most commonly produced are
commercial wood in the form of timber and logs for sawmills and other wood
industries and industrial wood for chip board, etc. as well as fuelwood
including a little percent of chips for energy purposes. Potential raw
material sources for fuel wood are bark, by-products and wood residues from
the forest industry; raw material directly from forest operations and other
types of raw material originating from wood. The history of forest chip
production in Croatia is a good illustration of the conflicting issues of
timber, energy and economy. After ten years of trying to organize
production of secondary energy, we have now entered a new decade in which
the nature of energy is being redefined. As to the forests in the temperate
zone of Croatia, research has been carried out on the residues of early and
later thinnings, selective cuts, final cuts, clear cuts, seed-tree cuts,
shelter tree cuts, etc. The following main fields of chips application are
referred to: conventional firewood for residential heating; fuelwood for
district heating plants and other major heat suppliers; raw material for
different kinds of board or pulp chip for industry.
Keywords: forest biomass, utilization in the past, future plants in Croatia
- Type of paper
: M.A.
Title: Efficiency Optimization at Wood Machining by Milling
Faculty: Strojarstva i brodogradnje Zagreb
Author: RISOVIĆ STJEPAN
Date of defense: 11/10/93
Language: hrvatski
Number of pages: 164
Summary: The paper deals with the optimization procedure of the
technological process of wood machining by milling. Only the factors having
influence during the effective time (from the technically-technological
viewpoint) have been considered here.The goal function has been exemined
with regard to the existing restrictions.
Keywords: optimization, efficiency, wood milling
- Type of paper
: Invited lecture
Title: Flexible automation in woodworking
Institution: HAZU - Razred za mehaničke, fizičke, kemijske i tehničke znanosti
Year: 1994
- Type of paper
: Invited lecture
Title: Measurement of the Airborne Noise and the Noise at the
Operator's Position Emitted by the ECOTRAC V-1033F Forest Tractor
Institution: Institut za medicinska istraživanja i medicinu rada
Year: 1994
- Type of paper
: Invited lecture
Title: Hand Transmitted Vibrations in Orbital Hand Sanding
Machines
Institution: Institut za medicinska istraživanja i medicinu rada
Year: 1994
