COVER

TITUL

NEW DESIGNS OF ROTORS WITH VARIABLE GEOMETRY PARAMETERS IN DYNAMICS AND THEIR EFFECTIVE USE IN AVIATION AND WIND ENERGY
Doctor of science, Prof. Turmanidze R., Master Tsikarishvili E., Undergraduate student Popkhadze G. ... 4

PRESENT OPPORTUNITIES FOR APPLICATION OF FRACTURE MECHANICS IN DETERMINING THE SECURITY OF WELDEDSTRUCTURES
Prof. Zhelev, A., Ph. D., Eng. Osikovski, T., M. Sc. ... 8

OPTIMISING TECHNOLOGY FOR PRODUCTION OF HIGH FREQUENCY WELDED PIPES MADE OF X60 STEEL
Prof. Cvetkovski S. PhD., Dr. Brkovski D. PhD. ... 13

COLD DRAWING OF PURE MAGNESIUM WIRE
Haruka Takeura, Kazunari.Yoshida ... 17

VIBRATION POWER GENERATION WITH PIEZOELECTRIC ELEMENT USING COUPLING WITH CYLINDRICAL SOUND FIELD ENCLOSED BY END PLATES HAVING DIFFERENT THICKNESS
B.Eng. Ohba Y. and Prof. D.Eng. Moriyama H. ... 21

MODELING EFFECTS OF IMPACT (SHOCK) -ABRASION WEAR OF IRON BASED HARDFACING
Nikolay Tonchev, Mohammad Reza Khanzadeh Emil Yankov, Ivanka Pencheva, Alexander Monov ... 25

ADVANCED COMPUTING FOR HIGH SPEED BRIQUETTING OF METAL CHIPS AND POWDERS
Stanislav Gyoshev ... 29

NEW TYPE OF INNOVATIVE LIFTERS
Stoimenov N. ... 32

ROBOT CONTROL AND MODERN ICT FOR ENERGY EFFICIENCY AND BETTER QUALITY OF INNOVATIVE TECHNOLOGICAL PROCESSES USING SMART LAB EQUIPMENT
Dimitar Karastoyanov Denis Chikurtev Milena Grouev ... 35

MOLECULAR SIMILARITY IN THE FRAMEWORK OF A BIOISOSTERISM STUDY
Dеsislava Ivanova ... 39

ELECTRIC DISCHARGE SYNTHESIS OF TITANIUM CARBIDE
Prof., Dr. of Science Syzonenko O., Prof., Dr. of Science Shregii E., Dr.hab.inż., PhD, Prof. Prokhorenko S., Torpakov A., Lypian Ye., Trehub V.1, Cieniek B. ... 42

THE EXPERIMENTAL VALVE DEVICE FOR THE GRAIN CONSUMPTION REGULATION
Tuleshov A.K., Demyanenko A.V., Koshekov K.T.,
Astapenko N. V. ... 46

MODERNIZATION OF EXPERT SYSTEM BASED ON THE THEORY OF IDENTIFICATION MEASUREMENT
D.t.s. Koshekov K., c.t.s. Savostin A., m.t.s. Kashevkin A., D.t.s. KlikushinYu., c.t.s. Kobenko V., Sofina N. ... 49

ON A MATHEMATICAL MODEL DESCRIBING THE MOTION OF SOLID PARTICLES OF MICRO- AND NANO-SIZE IN GAS FLOW
Prof. Dr.Sc.Math. Guseynov Sh.E., B.Sc.Phys. Zaimis U., Dr.Sc.Biol. Aleksejeva J.V., Prof. Dr.Sc.Phys. Kaupuzs J.,
Assoc. Prof. Dr.Sc.Comp. Jansone A., Assoc. Prof. Dr.Sc.Eng. Grickus A. ... 53

OPTIMIZATION OF BIOGAS PRODUCTION FROM LIGNOCELULOSIC MATERIALS BY DIFFERENT METHODS OF SUBSTRATE TREATMENT
M.Sc. Angelov I, Prof. Beschkov V. ... 63

PROGRAMMING MODULE DESIGN FOR SETTING TECHNOLOGICAL PARAMETERS FOR WORKPIECES
Eng. Matsinski P., MA, Assoc. Prof. Eng. Topalova M., PhD, Assoc. Prof. Eng. Tsekov L., PhD ... 65

TECHNOLOGICAL SUPPORT OF PERFORMANCE CHARACTERISTICS OF MACHINE COMPONENTS
D. Sc. in Engineering V. F. Bezjazychnyi ... 68

КОМПЛЕКСНО РЕШЕНИЕ ЗА МЕХАНИЧНО ОБРАБОТВАНЕ НА ТЪНКОСТЕННИ, КУТИЕОБРАЗНИ ЕДРОГАБАРИТНИ ДЕТАЙЛИ В УСЛОВИЯТА НА ШИРОКО НОМЕНКЛАТУРНО ДРЕБНОСЕРИЙНО ПРОИЗВОДСТВО
Assist. Dimitrov D. PhD., M.Sc. Georgiev I. ... 71

ГРУПОВ ПОДХОД ЗА ЕКСПРЕСНО ОФЕРТНО ОПРЕДЕЛЯНЕ НА СЕБЕСТОЙНОСТТА НА МАШИНОСТРОИТЕЛНО ИЗДЕЛИЕ В УСЛОВИЯТА НА ДРЕБНОСЕРИЙНО ПРОИЗВОДСТВО
Assist. Dimitrov D. PhD., M.Sc. Malchev N. ... 75

МАТЕМАТИЧЕН МОДЕЛ ЗА ОПРЕДЕЛЯНЕ НА НЕПЕРПЕНДИКУЛЯРНОСТТА НА ЛИНЕЙНИТЕ ОСИ НА ОБРАБОТВАЩ ЦЕНТЪР С ПОМОЩТА НА ПРИЗМАТИЧЕН КАЛИБЪР
Assist. Dimitrov D. PhD., M.Sc. Karachorova V. , Assoc.Prof. Nenov G. PhD ... 78

PRECONDITIONS OF SEPARATION IN STR WITH INTEGRATED MEMBRANE FOR ENERGY-SAVING BY RECOVERY OF VALUE-ADDED MATERIALS
Prof. DSc. Vlaev, S.D., Prof. Dr. Tsibranska. I., Assoc. Prof. Dr. Dzhonova-Atanasova, D.B., M.Sc. Dr. Georgiev, D. ... 82

HOW DOES 10% ETHANOL COMPOSITION OF GASOLINE AFFECT CAR ENGINE PERFORMANCE
Ass.prof. PhD Kamelia Ruskova, Assos. Prof. PhD Borislav Damianov ... 86

EFFECT OF PLASTIC DEFORMATION ON THE MICROSTRUCTURE AND PLASTICITY OF HIGH FREQUENCY ELECTRIC RESISTANCE WELDING
Prof. Dr. Maksuti Rr. ... 89

ADVANCED CONDUCTOR SHAPE TECHNOLOGY
PhD, P. Eng. Pushev G., Chief Assistant Velev S.,
Prof. Dulgerov N. ... 93

COMPARATIVE RESEARCH ON THE QUALITY OF AUTOMOTIVE STATORS CONDUCTORSWELDING OBTAINED THROUGH BRAZING AND TIG WELDING METHODS
PhD, P. Eng. Pushev G., Chief Assistant Velev S.,
Prof. Dulgerov N. ... 98