This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU  University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing House Journal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

CONTENTS

A. Mechanical Engineering

Nastasescu, Gh. Barsan
SPH method in numerical calculus of detonation parameters

1

D.M. Constantinescu, D.A. Apostol, F.A. Stuparu
Polyurethane foam behavior in mixed mode bending

2

B. Chemical Engineering, Materials Science and Engineering

Dumitra Lucan, Gheorghita Jinescu, Alice Dinu, Madalina Stanciulescu, Maria Mihalache
CANDU steam generator secondary side fouling characteristics

31

C. Civil Engineering

Alexandru Stematiu
Control  of  EPB  TBM  tunneling  parameters  to  mitigate  the  effects  on Dambovita river structures

43

D. Electrical and Electronics Engineering

Wilhelm Kappel
Energy saving using permanent magnets on the electric machines

57

E. Petroleum and Mining Engineering

Mohamed Halafawi, Lazăr Avram
Borehole insitu stress stability analysis of RBS-9 field utilizing the inversion technique

67

Carsten Drebenstedt, Hossein Abbaspour
Scheduling of the location and relocatin of a semi mobile in pit crushing and conveying (SMIPCC) system in mines

79

Arad Victor, Arad Susana, Samoila Liliana, Teseleanu George
The coal exploitation in the Jiu Valley between the strategic resource and social impact

99

AGIR Publishing House

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU  University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing House Journal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

CONTENTS

A. Mechanical Engineering

Nicoleta-Violeta Stanciu, Felicia Stan, Catalin Fetecau, Alexandru Serban
Fabrication and characterization of LDPE and HDPE filaments for 3D printing

299

B. Chemical Engineering, Materials Science and Engineering

Dumitra Lucan, Şerban Constantin Valeca, Gheorghiţa Jinescu, Lucian Velciu
Corrosion of some candidate structural materials for lead fast reactors

313

Edgar Moraru, Daniel Besnea, Alina Spânu, Victor Constantin
Experimental research on some modern technologies and materials applied in prosthetic dentistry

329

C. Environmental Engineering and Energy

Florea Chiriac, Victor Chiriac
Energy recovery systems for the efficient cooling of data centers using absorption chillers and renewable energy resources 

339

D. Electrical and Electronics Engineering

Dragomir Toma-Leonida, Cîmpeanu Alexandru
Improving the behaviour of a suboptimal control system 

351

Octavian Pastravanu, Mihaela-Hanako Matcovschi, Mihail Voicu
Perron-Frobenius theory applied to Leontief economic systems

363

Ion Murgescu, Lucia-Andreea El-Leathey, Rareş-Andrei Chihaia
Guaranteed versus real service life of PV panels in Romania

375

E. Petroleum and Mining Engineering

Mohamed Halafawi, Lazăr Avram
Application of risk analysis in drilling well problems and operations- field case study

393

AGIR Publishing House

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

CONTENTS

B. Chemical Engineering, Materials Science and Engineering

Doru Vladimir Puşcaşu, Maria Georgescu, Mihai Rohan
The cement industry in the context of circular economyTitano-Aluminizing of Nickel based Super-Alloys

201

C. Environmental Engineering and Energy

Corneliu Berbente, Marius Brebenel, Sorin Berbente
Non-explosive reversible transformations matter-energy via gravity in universeChallenges for a transition towards the smart grids

207

Ion Visa, Anca Duta
The role of solar energy in the future energy scenario

215

E. Electrical and Electronics Engineering

Bogdan Dumitrescu, Horia Gavrila
Models using artificial intelligence to optimize the use of wireless network sensors in pharmaceutical depots. II: Experimental bases and productive use

227

Ion Bibicu
Nanomaterials characterization by Mössbauer spectroscopy

239

Lazar Corneliu, Tiganasu Alexandru
Control-Oriented Models for vehicle longitudinal motion

251

Vasile Sima
Numerical solution of algebraic Riccati equations by Newton’s method

265

Liviu Goraş, Monica Fira
On signals processing on graphs, patterns, consensus and manifolds

291

AGIR Publishing House

CONTENTS

A. Mechanical Engineering

Cornel Brisan, Ligia Munteanu, Veturia Chiroiu
On the acoustic invisibility

81

Mocian Oana Alexandra, Constantinescu Dan Mihai, Sandu Marin, Sorohan Ştefan
Low-velocity impact testing of foam core sandwich panels

93

Urse Georgeta Ion Durbacă, Iolanda Constanţa Panait
Some research results on the tightness and strength of flange joints

107

B. Chemical Engineering, Materials Science and Engineering

Mihai Ovidiu Cojocaru, Leontin Drugă, Mihai Brânzei, Florică Tudose
Titano-Aluminizing of Nickel based Super-Alloys

131

Ioan Ilca, Daniela Miloştean
The deformability and thermal treatment for the low alloyed Romanian
steel of high resistance

141

C. Electrical and Electronics Engineering

Gianfranco Chicco, Roberto Napoli
Challenges for a transition towards the smart grids

155

Aurélien Mercier, Mahana Bernier, Cédric Boudinet, Yvon Bésanger
Decentralized system controlling the phase connection of a single-phase installation

175

Bogdan Dumitrescu, Horia Gavrila
Models using artificial intelligence to optimize the use of wireless
network sensors in pharmaceutical depots. I: conception

189

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

 

 

 

CONTENTS

A. Mechanical Engineering

Hadăr Anton, Cormoş Raul, Petrescu Horia-Alexandru
Numerical evaluation of the performances of a multilayered
honeycomb composite material in an aeronautical engineering application

1

Marin Alexandru
Deformation and cutting process of interior surfaces

10

Roşculeţ Răzvan-Tudor, Fetecău Cătălin
Techniques for rapid prototyping of scale models of blades
for wind turbines

15

B. Chemical Engineering, Materials Science and Engineering

Dobre Tănase, Pârvulescu Oana Cristina, Răducanu Cristian, Trică Bogdan,
Jinescu Gheorghiţa
Stochastic modelling of polysaccharide hydrolysis

25

Thalmaier Gyorgy, Sechel Niculina, Moldovan Valentin, Vida-Simiti Ioan
Gradual porous membranes obtained by powder sedimentation

39

E. Electrical and Electronics Engineering

Dobre Robert-Alexandru, Stanomir Dumitru
Novel method for determining the position of speakers in a room
using beamforming

50

Hantila Ioan Florea, Maricaru Mihai, Stanculescu Marilena, Minciunescu Paul
The magnetic flux-voltage characteristic computation for a magnetic
circuit branch

57

F. Petroleum and Mining Engineering

Lahchava Omar, Ilias Nicolae
Complex calculation method of temperature, mass transfer potential
and relative humidity for ventilation flow in subway

67

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

 

 

CONTENTS

A. Mechanics, Mechanical and Idustrial Engineering, Mechatronics

B. Electrotechnics, Electronics, Energetics, Automation

D. Chemical Engineering, Materials Science and Engineering, Natural Resources

E. Civil Engineering and Transportation Engineering

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

 

CONTENTS

A. Mechanics, Mechanical and Idustrial Engineering, Mechatronics

B. Electrotechnics, Electronics, Energetics, Automation

D. Chemical Engineering, Materials Science and Engineering, Natural Resources

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

 

CONTENTS

A. Mechanics, Mechanical and Idustrial Engineering, Mechatronics

B. Electrotechnics, Electronics, Energetics, Automation

C. Computer Engineering, Information and Communications Technology

D. Chemical Engineering, Materials Science and Engineering, Natural Resources

E. Civil Engineering and Transportation Engineering

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

Editor-in-chief: Valeriu V. JINESCU University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing HouseJournal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

 

CONTENTS

A. Mechanics, Mechanical and Idustrial Engineering, Mechatronics

B. Electrotechnics, Electronics, Energetics, Automation

D. Chemical Engineering, Materials Science and Engineering, Natural Resources

E. Civil Engineering and Transportation Engineering

A. Mechanics, Mechanical and Idustrial Engineering, Mechatronics

B. Electrotechnics, Electronics, Energetics, Automation

C. Computer Engineering, Information and Communications Technology

D. Chemical Engineering, Materials Science and Engineering, Natural Resources

E. Civil Engineering and Transportation Engineering