Vol. 3 (2023): Environment. Technology. Resources. Proceedings of the 14th International Scientific and Practical Conference. Volume 3

View Vol. 3 (2023): Environment. Technology. Resources. Proceedings of the 14th International Scientific and Practical Conference. Volume 3

Published: 2023-06-13

Full Issue

Engineering Sciences and Production Technologies

STUDY OF THE INFLUENCE OF ROAD RESISTANCE ON THE FUEL CONSUMPTION OF A PASSENGER CAR WITH AN AUTOMATIC TRANSMISSION

Krasimir Ambarev, Stiliyana Taneva

15-19
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EXPERIMENTAL STUDY OF TOXIC COMPONENTS IN THE EXHAUST GASES DURING THE OPERATION OF A CAR ENGINE WITH GASOLINE AND LPG

Krasimir Ambarev, Valyo Nikolov

20-23
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THERMAL CHARACTERISTICS OF MATERIALS IN MODELLING OF WELDING PROCESSES

Valentin Anguelov

24-35
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RESEARCH INTO THE ACCURACY OF HOLES IN 3D PRINTING USING TAGUCHI METHOD

Valeri Bakardzhiev, Sabi Sabev, Konstantin Chukalov, Plamen Kasabov

36-40
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RESEARCH INTO 3D PRINTING LAYER ADHESION IN ABS MATERIALS

Valeri Bakardzhiev, Sabi Sabev, Plamen Kasabov, Konstantin Chukalov

41-45
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CONVEYOR-TYPE SMALL HYDROPOWER PLANT FOR SHALLOW RIVER WATERS

Vitaly Beresnevich, Marina Cerpinska, Martins Irbe, Janis Viba

46-49
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COMPARISON OF POTENTIAL ROAD ACCIDENT DETECTION ALGORITHMS FOR MODERN MACHINE VISION SYSTEM

Oleksandr Byzkrovnyi, Kyrylo Smelyakov, Anastasiya Chupryna, Loreta Savulioniene, Paulius Sakalys

50-55
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COMPARATIVE STUDIES OF THE STRENGTH CHARACTERISTICS OF CONCRETE BLOCKS WITH TITANIUM AND IRON RODS (BARS)

Ervins Blumbergs, Viktors Mironovs, Genadijs Sahmenko

56-60
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OPTICAL GEOMETRIC DESIGN OF SMALL MODULAR CYLINDRICAL GEARS WITH ASYMMETRIC PROFILE

Genadi Cvetanov, Tsanko Karadzhov

61-64
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RESEARCH ON WORKING BODIES OF HAMMER CRUSHERS EMPLOYING THE FINITE ELEMENT METHOD

Vladlen Devin, Serhii Yermakov, Oleg Gorbovy, Vitaliy Pidlisnyj, Oleksandr Semenov

65-68
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EFFECT OF CU AS МINORITY АLLOYING ЕLEMENT ON GLASS FORMING ABILITY AND CRYSTALLIZATION BEHAVIOR OF RAPIDLY SOLIDIFIED AL-SI-NI RIBBONS

Vanya Dyakova, Hristina Spasova, Yoanna Kostova, Yana Mourdjeva, Georgi Stefanov

69-73
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INFLUENCE OF NI AS MINORITY ALLOYING ELEMENT ON THE CORROSION BEHAVIOR OF AMORPHOUS AL-CU-MG ALLOYS IN CHLORIDE SOLUTION

Vanya Dyakova, Yoanna Kostova, Hristina Spasova

74-78
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INVESTIGATING THE POSSIBILITY OF ALLOYING AN ALLOY ALSI25CU5CR WITH CO, CR AND MO USING METAL POWDER

Boyan Dochev, Desislava Dimova, Ivan Panov

79-82
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INVESTIGATION OF THE STRUCTURE OF ALSI25CU4CR AND ALSI25CU5CR ALLOYS

Boyan Dochev, Desislava Dimova, Mihail Zagorski, Plamen Kasabov, Georgiya Kamburova

83-89
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RESULTS AND ANALYSIS OF ACHIEVED JOINT RESEARCH AND ACTIVITIES BETWEEN REZEKNE ACADEMY OF TECHNOLOGY AND VASIL LEVSKI NATIONAL MILITARY UNIVERSITY

Nikolay Todorov Dolchinkov

90-93
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STUDY OF TECHNOLOGICAL CHAINS FOR RAPID PROTOTYPING OF ORTHODONTIC DENTAL PRODUCTS

Veselina Dukova, Roussi Minev, Emil Yankov

94-98
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EXPERIMENTAL REMOTE DETERMINATION OF THE STATIC CHARACTERISTIC OF THE ARC IN TIG WELDING

Deyan Gradinarov, Marina Manilova, Manahil Tongov

99-105
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MODELLING AND SIMULATION OF ELECTROPNEUMATIC POSITIONING SYSTEM INCLUDING THE LENGTH OF PNEUMATIC LINES

Georgi Iliev, Hristo Hristov

106-111
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MODELLING AND SIMULATION OF DYNAMIC PROCESSES OF PNEUMATIC LINES

Georgi Iliev, Hristo Hristov

112-118
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EFFECT OF BORON ON THE WEAR BEHAVIOR OF HIGH CHROMIUM WHITE CAST IRONS

Julieta Kaleicheva, Krassimir Kirov, Valentin Mishev, Rumyana Lazarova, Zdravka Karaguiozova

119-123
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INGREDIENTS DEGRADATION IN STEEL FIBER REINFORCED CONCRETE AFTER THERMAL LOADING

Karunamoorthy Rengasamy Kannathasan, Andrejs Krasnikovs, Arturs Macanovskis

124-128
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DESIGN AND PRODUCTION OF A DEVICE FOR BASING AND FIXING CONIC DETAILS IN SINE BAR MEASUREMENTS

Pavlinka Katsarova, Kliment Georgiev, Adelina Vasileva, Marin Dimitrov

129-134
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3D MODEL OF THE MECHANICAL PART OF A WEED RECOGNITION SYSTEM IN AN AGRICULTURAL ROBOT IN 3D EXPERIENCE ENVIRONMENT

Evgeni Lyubomirov Kehayov, Georgi Borisov Ivanov, Georgi Georgiev Komitov

135-138
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WORKING REGIMES FOR FRICTION STIR PROCESSING OF ALUMINIUM ALLOY A6061

Christo Kondoff, Rossen Mikhov, Leoneed Kirilov, Radostina Zaekova, Plamen Tashev

139-144
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EXPERIMENTAL STUDY OF SURFACE ROUGHNESS IN VIBRO-IMPACT CUTTING OF OPTICAL SLUGS

Angel Lengerov, Sabi Sabev, Stoyan Paliiski

145-148
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STUDY OF THE KINEMATIC AND DYNAMIC OF INTERACTION OF A VIBRATING SYSTEM FOR CUTTING OPTICAL SLUGS

Angel Lengerov, Kalin Krumov, Georgi Levicharov

149-153
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INCREASING THE QUALITY OF FORMING OF SPINNING DETAILS OF ALUMINUM ALLOYS BY CONTROLLING THE RESIDUAL STRESSES IN THEIR SURFACE LAYER

Dimilyan Leonov, Angel Lengerov, Kalin Krumov, Hristo Metev

154-158
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SOLVING FUNCTIONAL-TECHNOLOGICAL PROBLEMS USING A NON-PARAMETRIC APPROACH FOR CONTROL OF MICROGEOMETRY OF THE SURFACES OF DETAILS

Dimilyan Leonov, Hristo Metev, Kalin Krumov, Angel Lengerov

159-163
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STUDY ABOUT THE INFLUENCE OF THE PROCESS PARAMETERS OF VIBRO IMPACT CUTTING OF OPTICAL SLUGS ON THE PRODUCTIVITY OF THE PROCESS

Georgi Levicharov, Angel Lengerov, Stoyan Paliiski

164-167
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A GEOMETRICAL SYNTHESIS OF COMEZ TEXTILE MECHANISMS OF FINALLY REMOVED POSSIBILITIES

Marin Jordanov Marinov

168-171
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RESEARCH OF THE PRINCIPAL MODEL OF THE ELECTRIC ENERGY GENERATOR OF THE ELECTRIC CAR (STAGE COMBINATION OF MECHANICAL AND ELECTROMECHANICAL PARTS)

Vaidotas Matutis, Loreta Savulioniene, Paulius Sakalys, Laura Gzegozevske

172-175
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IMPROVEMENT OF OPERATIONAL PROCESSES BY ENSURING WORK SAFETY IN PRODUCTION

Ruta Meiste, Sandra Jakštienė, Aušra Lankauskienė

176-182
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LOCAL PROCESSING OF NON-METAL MATERIALS WITH CONCENTRATED ENERGY FLOW

Ivan Mitev, Simeon Tsenkulovski

183-186
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HUMAN CAPITAL IN THE CHANGING WORK ENVIRONMENT OF INDUSTRY 4.0

Neli Ivanova Nikolova

187-193
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APPROACH TO THE FORMING OF RATIONAL TECHNOLOGY FOR THE EXPORT CARGOES DELIVERY IN SUPPLY CHAIN ON THE PRINCIPLES OF CO-MODALITY

Oleksandra Orda, Yevgen Nagornyy, Natalia Potaman

194-199
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CHARACTERISTICS OF MOVEMENTS WHEN CYLINDRICAL TURNING, DRILLING, COREDRILLING AND REAMING

Angel Poparov, Agop Izmirliqn

200-203
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CHARACTERISTICS OF MOTIONS IN FACING

Angel Poparov, Agop Izmirliqn

204-207
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DEVELOPMENT OF A METHOD FOR CONTACTLESS TEMPERATURE MEASUREMENT IN 3 SPECTRAL RANGES

Dimcho Pulov, Tsanko Karadzhov

208-213
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INFLUENCE OF ADDING POLYPROPYLENE(PP) INTO POLYETHYLENE(PE) ON MECHANICAL PROPERTIES OF GEOCELLS

Sabi Sabev, Plamen Kasabov, Konstantin Chukalov, Valeri Bakardzhiev

214-218
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DETERMINATION OF THE DYNAMIC MODULUS OF LINEAR DEFORMATIONS OF REINFORCED HIGHLY FILLED POLYMER CONCRETE COMPOSITES DURING CURING

Sabi Sabev, Plamen Kasabov, Konstantin Chukalov, Valeri Bakardzhiev

219-225
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ALGORITHM FOR OPTIMIZATION OF IDLE TOOL MOVES WHEN MILLING COMPLEX SURFACES ON A TRIAXIAL CNC MILLING MACHINE

Silviya Salapateva, Iliya Chetrokov, Bano Stefanov

226-232
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MATHEMATICAL MODELING OF THE SEQUENCE OF MACHINING SECTIONS OF COMPLEX SURFACES WHEN MILLING ON A TRIAXIAL CNC MACHINE TOOL

Silviya Salapateva, Bano Stafanov

233-239
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EXPERIMENTAL STUDIES OF AN ALGORITHM FOR MINIMIZING THE IDLE TOOL MOVES WHEN MILLING COMPLEX SURFACES ON TRIAXIAL CNC MACHINE TOOLS

Silviya Salapateva, Bano Stefanov

240-245
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ADAPTIVE IMAGE ENHANCEMENT MODEL FOR THE ROBOT VISION SYSTEM

Kyrylo Smelyakov, Anastasiya Chupryna, Denys Sandrkin, Loreta Savulioniene, Paulius Sakalys

246-251
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FREQUENCY ANALYSIS OF AN ARM OF MACPHERSON SUSPENSION ON A PASSENGER CAR

Stiliyana Taneva, Krasimir Ambarev, Stanimir Penchev, Hristo Atanasov

252-256
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PRACTICE ORIENTED HEAT SOURCE MODEL CALIBRATION

Manahil Tongov, Valentin Anguelov

257-261
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A THERMAL MODEL FOR WIRE ARC ADDITIVE MANUFACTURING

Manahil Tongov, Vladimir Petkov

262-270
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STUDY OF THE UNLOADING AND SELECTION PROCESS OF ENERGY WILLOW CUTTINGS FOR THE CREATION A PLANTING MACHINE

Serhii Yermakov, Taras Hutsol, Igor Gerasymchuk, Pavlo Fedirko, Viktor Dubik

271-275
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MODIFICATION OF 5083 ALUMINUM ALLOY WITH GRAPHENE VIA FRICTION STIR PROCESSING

Radostina Zaekova, Plamen Tashev, Yasen Hadjitodorov, Deyan Gradinarov

276-280
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Laser Technologies

RESEARCHING THE PROCESS OF LASER STRUCTURING OF THE SURFACE OF ALUMINUM

Kevins Bulavskis, Emil Yankov, Lyubomir Lazov, Antons Pacejs

282-288
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ANALYSING THE INFLUENCE OF TECHNOLOGICAL PARAMETERS ON THE PROCESS OF LASER MARKING OF SURFACE OF ANODISED ALUMINIUM SAMPLES

Ļubova Denisova, Antons Pacejs, Emil Yankov, Lyubomir Lazov

289-296
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FEATURES OF COLOR LASER MARKING ON METALS

Nikolay Todorov Dolchinkov, Teodor Petrov, Georgi Petrov, Christian Tolev, Emanuil Dimitrov

297-305
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COMPARATIVE ANALYSIS ОF GEOMETRIC DEVIATIONS IN CONTACT MEASURING INSTRUMENTS FOR CONTROL AND LASER CONTACTLESS SCANNING

Borislav Georgiev, Tsanko Karadzhov

306-310
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INFLUENCE OF BASIC PARAMETERS OF THE LASER MARKING PROCESS ON STAINLESS STEEL SAMPLES

Veselin Hristov, Lyubomir Lazov, Nikolay Angelov, Emil Yankov

311-315
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COMPARATIVE ANALYSIS OF METHODS FOR MEASURING LASER POWER

Tsanko Karadzhov, Lyubomir Lazov

316-320
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INVESTIGATION OF LASER MARKING AND TEXTURING OF TITANIUM GR 2 WITH FIBER LASER

Jēkabs Lapa, Imants Adijāns, Emil Yankov, Lyubomir Lazov, Ritvars Rēvalds

321-327
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APPLICATION OF A FINITE ELEMENT MODEL TO OBTAIN THE INFLUENCE OF THE TREATMENT’S POWER, REFLECION AND FOCAL DIAMETER IN LASER TEXTURING OF ALUMINUM

Lyubomir Lazov, Ivo Draganov

328-333
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THE CHANGE OF CONTRAST IS INVESTIGATION OF 75 STEEL SAMPLES LASER MARKED WITH DIFFERENT MODES

Lyubomir Lazov, Nikolay Padarev, Milko Yovchev, Lyubomir Linkov

334-338
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OPTICAL SYSTEMS FOR REDUCING THE DIVERGENCE OF LASER BEAMS

Dimcho Pulov, Petar Tsvyatkov

339-343
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INVESTIGATING THE CONTRAST OF SURFACE MARKING ON DIFFERENT COLOR CONNECTORS FOR TELECOMMUNICATIONS NEEDS

Daniels Raubiška, Imants Adijāns, Emil Yankov, Lyubomir Lazov

344-350
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INVESTIGATING THE IMPACT OF LASER POWER AND SCAN SPEED ON ENGRAVING ASPEN THERMOWOOD

Dzintars Rāviņš, Emil Yankov, Imants Adijāns, Lyubomir Lazov, Daivis Rāviņš

351-357
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INVESTIGATION OF SURFACE ROUGHNESS OF CARBON STEEL MACHINED PARTS AFTER NANOSECOND FIBER LASER MARKING

Petar Tsvyatkov, Emil Yankov, Lyubomir Lazov, Edmunds Teirumnieks, Karlis Pīgožnis

358-362
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COLOR MARKING OF STAINLESS STEEL AND TITANIUM WITH THE LASER OXIDATION METHOD

Petar Tsvyatkov, Emil Yankov, Lyubomir Lazov, Edmunds Teirumnieks, Erika Teirumnieka

363-369
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INVESTIGATION OF THE INFLUENCE OF TECHNOLOGICAL PARAMETERS OF LASER MARKING ON THE DEGREE OF CONTRAST

Petar Tsvyatkov, Emil Yankov, Lyubomir Lazov, Edmunds Teirumnieks, Karlis Pīgožnis

370-374
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