Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Leandru Gheorghe Bujoreanu"'
Autor:
Mihai POPA, Bogdan PRICOP, Bogdan ISTRATE, Florin POPA, Viorel GOANȚĂ, Leandru Gheorghe BUJOREANU
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 44, Iss 1 (2021)
The paper reports the structural effects of holding time period, during heat treatment, on the dynamic and damping behavior of a Fe-28Mn-6Si-5Cr (mass. %) shape memory alloy. After casting and hot rolling, solution treatment at 1050 oC was applied fo
Externí odkaz:
https://doaj.org/article/7fe11242ea01497a92547b039b1096dd
Publikováno v:
Revista de Metalurgia, Vol 35, Iss 6, Pp 379-383 (1999)
Se hace un análisis pormenorizado del mecanismo de reversión de la fricción al estirado por vibraciones ultrasonoras (EVU) de los alambres, para el caso en que la trefiladora está ubicada en los máximos de oscilación de las ondas y activada par
Externí odkaz:
https://doaj.org/article/cd4ef0db8d994ba19ee675437f76f69d
Autor:
Adrian Petru Teodoriu, Bogdan Pricop, Nicoleta-Monica Lohan, Mihai Popa, Radu Ioachim Comăneci, Ioan Doroftei, Leandru-Gheorghe Bujoreanu
Publikováno v:
Actuators, Vol 13, Iss 8, p 319 (2024)
In the present study, the capacity of two commercial NiTi and NiTiCu shape memory alloy (SMA) wires to develop work-generating (WG) and constrained-recovery (CR) shape memory effects (SMEs), as well as the capacity of a commercial NiTiFe super-elasti
Externí odkaz:
https://doaj.org/article/5a025a748c7a403790e46f7062f06860
Autor:
Gheorghe Bădărău, Mihai Popa, George Stoian, Ana-Maria Roman, Radu-Ioachim Comăneci, Bogdan Pricop, Nicanor Cimpoeșu, Leandru-Gheorghe Bujoreanu
Publikováno v:
Crystals, Vol 14, Iss 3, p 250 (2024)
The paper analyzes the occurrence of evenly spaced cracks on the surface of lamellar specimens of Fe-28Mn-6Si-5Cr (mass %) shape-memory alloy (SMA), during cold rolling. The specimens were hot rolled and normalized and developed cold rolling cracks w
Externí odkaz:
https://doaj.org/article/9056734eb7b54dd9aa64ccedd9186afc
Autor:
Ana-Maria Roman, Ramona Cimpoeșu, Bogdan Pricop, Nicoleta-Monica Lohan, Marius Mihai Cazacu, Leandru-Gheorghe Bujoreanu, Cătălin Panaghie, Georgeta Zegan, Nicanor Cimpoeșu, Alice Mirela Murariu
Publikováno v:
Journal of Functional Biomaterials, Vol 14, Iss 7, p 377 (2023)
Iron-based SMAs can be used in the medical field for both their shape memory effect (SME) and biodegradability after a specific period, solving complicated chirurgical problems that are partially now addressed with shape-memory polymers or biodegrada
Externí odkaz:
https://doaj.org/article/436b861720ea4d769809da0d36c06c04
Autor:
Mihai Popa, Florin Popa, Bogdan Pricop, Nicanor Cimpoeșu, Nicoleta-Monica Lohan, Gabriel Kicsi, Bogdan Istrate, Leandru-Gheorghe Bujoreanu
Publikováno v:
Nanomaterials, Vol 13, Iss 7, p 1250 (2023)
Fe-Mn-Si-based shape memory alloys (SMAs) have been extensively investigated since 1982 for various useful properties that enhance the development of different applications such as anti-seismic dampers for very tall buildings, pipe joints, or rail fa
Externí odkaz:
https://doaj.org/article/7eea6ab5a9e84a3ca10735d5d834fe06
Autor:
George-Theodor Stiubianu, Adrian Bele, Marian Grigoras, Codrin Tugui, Bianca-Iulia Ciubotaru, Mirela-Fernanda Zaltariov, Firuța Borza, Leandru-Gheorghe Bujoreanu, Maria Cazacu
Publikováno v:
Batteries, Vol 8, Iss 8, p 95 (2022)
Hexagonal boron nitride (hBN) has been incorporated, as an active filler, in a customized silicone matrix to obtain high thermal conductivity composites, maintaining high flexibility and low dielectric permittivity, which are of interest for heat dis
Externí odkaz:
https://doaj.org/article/2c1acf36cece4ae093014430131150f9
Autor:
Mihai Popa, Victor Daniel Apostol, Nicoleta Monica Lohan, Nicanor Cimpoesu, Maria Cazacu, Firuta Borza, Leandru-Gheorghe Bujoreanu
Publikováno v:
Materials Today: Proceedings. 72:600-606
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::472d535a090c153347154689675f2874
https://doi.org/10.1016/j.matpr.2022.10.225
https://doi.org/10.1016/j.matpr.2022.10.225
Publikováno v:
Materials Today: Proceedings. 72:607-614
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5e94fd819cef7d5da3b978f5ff75899
https://doi.org/10.1016/j.matpr.2022.10.226
https://doi.org/10.1016/j.matpr.2022.10.226
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 44, Iss 3, Pp 5-11 (2021)
This paper presents the results of an original experimental study on the training capacity of a powder metallurgy (PM) FeMnSiCrNi shape memory alloy (SMA). The specimens were sintered under protective atmosphere from blended elemental powders, 50 vol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0e6721d6645873d29169295b989bf76
https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/4867
https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/4867