Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Alexandru Crivoi"'
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-8 (2021)
Although acoustic and optical tweezers are widely used, it is challenging to create a 3D trap with a simple set-up. Here, acoustic vortex streaming is combined with radiation force to realise 3D trapping of particles in a fluid.
Externí odkaz:
https://doaj.org/article/85a5ea2da57b46dda0c044e0b9a9224d
Autor:
Alexandru Crivoi, Zheng Fan
Sound-attenuation capabilities of a certain class of subwavelength sound barriers based on wall-embedded Helmholtz resonators and a ventilation duct are studied theoretically and numerically. A simple analytical expression for the broadband integral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c87656fc379dfcdedb89d4e53d67432b
https://hdl.handle.net/10356/159781
https://hdl.handle.net/10356/159781
Publikováno v:
Communications Physics, Vol 4, Iss 1, Pp 1-8 (2021)
Acoustic tweezers use ultrasound for contact-free manipulation of particles from millimeter to sub-micrometer scale. Particle trapping is usually associated with either radiation forces or acoustic streaming fields. Acoustic tweezers based on single-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34cd7a6e24d030f85f53a9b29c5bdca7
https://doi.org/10.1038/s42005-021-00617-0
https://doi.org/10.1038/s42005-021-00617-0
The pattern formation left by a drying nanofluid droplet is related to the evaporation induced particle self-assembly. The experimental results demonstrate the formation of dendritic particle deposition after the liquid phase of unpinned sessile nano
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8144488f78b58b5352227352c52932d3
https://hdl.handle.net/10356/160388
https://hdl.handle.net/10356/160388
Publikováno v:
Procedia Engineering. 207:633-638
After several years of service under high temperatures and high pressure, the Ti-6Al-4V aero-engine components may need to be repaired by Tungsten Inert Gas (TIG) welding to prevent crack growth. However, the material properties tend to worsen after
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3300c332fd746c7f8b1a142a50750ce
https://doi.org/10.1016/j.proeng.2017.10.1033
https://doi.org/10.1016/j.proeng.2017.10.1033
Autor:
Zheng Fan, Alexandru Crivoi
Publikováno v:
Proceedings of Meetings on Acoustics.
A sound attenuating subwavelength metamaterial efficient in the low audible frequency range is proposed. The metasurface unit cell has a hexagonal shape with an axial ventilation channel inside. The side walls of the hexagonal cell are sub-divided in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::501c25f4b32523f2e6ed5b1c1b5625aa
https://doi.org/10.1121/2.0001288
https://doi.org/10.1121/2.0001288
Autor:
Murukeshan Vadakke Matham, Prabhathan Patinharekandy, Kelvin H. K. Chan, Tan Ming Jen, Aswin Haridas, Alexandru Crivoi
The added capabilities of Additive Manufacturing (AM) while processing metallic components have revolutionized the design and manufacturing flexibility of multitudes of aerospace components. However, AM being a stochastic process results in a degrade
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd73738f213bea03571d654daa3c9b22
https://hdl.handle.net/10356/141762
https://hdl.handle.net/10356/141762
Autor:
Patinharekandy Prabhathan, Vadakke Matham Murukeshan, Kelvin C.K. Chan, Alexandru Crivoi, Aswin Haridas
The use of carbon fiber-reinforced polymer (CFRP) composite materials in the aerospace industry have far improved the load carrying properties and the design flexibility of aircraft structures. A high strength to weight ratio, low thermal conductivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb13dfee7d819066708b70e8dced6559
https://hdl.handle.net/10356/102524
https://hdl.handle.net/10356/102524
Autor:
Alexandru Crivoi, Vadakke Matham Murukeshan, Patinharekandy Prabhathan, Aswin Haridas, Kelvin C.K. Chan
Surface characterization of the working components has always been a subject of interest among researchers and industry specialists. Especially in the aerospace industry where the aerodynamic capabilities are largely altered by the surface quality of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8e393f43c174c1f00e702412571109f
https://hdl.handle.net/10356/106840
https://hdl.handle.net/10356/106840
Publikováno v:
Residual Stresses 2016.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc53e6408cf2f58a5b3384918c6eee20
https://doi.org/10.21741/9781945291173-36
https://doi.org/10.21741/9781945291173-36