Results 21 to 30 of about 59,801 (212)

Multiple Reflections and Fresnel Absorption of Gaussian Laser Beam in an Actual 3D Keyhole during Deep-Penetration Laser Welding

International Journal of Optics, 2012
In deep penetration laser welding, a keyhole is formed in the material. Based on an experimentally obtained bending keyhole from low- and medium-speed laser penetration welding of glass, the keyhole profiles in both the symmetric plane are determined by ...
Xiangzhong Jin, Yuanyong Cheng, Licheng Zeng, Yufeng Zou, Honggui Zhang   +4 more
doaj   +1 more source

Effect of welding parameters on spatter formation in full-penetration laser welding of titanium alloys

Journal of Materials Research and Technology, 2021
The spatter formation process was observed by high-speed imaging during the full-penetration laser welding (FPLW) process of 4 mm-thick TC4 alloy plates. The effects of process parameters on spatter formation were studied.
Hao Cheng, Liangang Zhou, Qijun Li, Dong Du, Baohua Chang   +4 more
doaj   +1 more source

Keyhole Formation by Laser Drilling in Laser Powder Bed Fusion of Ti6Al4V Biomedical Alloy: Mesoscopic Computational Fluid Dynamics Simulation versus Mathematical Modelling Using Empirical Validation

Nanomaterials, 2021
In the laser powder bed fusion (LPBF) process, the operating conditions are essential in determining laser-induced keyhole regimes based on the thermal distribution.
Asif Ur Rehman, Muhammad Arif Mahmood, Fatih Pitir, Metin Uymaz Salamci, Andrei C. Popescu, Ion N. Mihailescu   +5 more
doaj   +1 more source

Finite element simulation of magnesium alloys laser beam welding [PDF]

, 2010
The authors are grateful to FONDERIE MESSIER (HONSEL group) that provided the as-cast magnesium alloy workpieces. The authors would like also to acknowledge the technical support of Dr.
BARRALLIER, Laurent, BELHADJ, Asma, BESSROUR, Jamel, BOUHAFS, Mahmoud, MASSE, Jean-Eric   +4 more
core   +5 more sources

Numerical Simulation of Molten Pool Dynamics in Laser Deep Penetration Welding of Aluminum Alloys

Crystals, 2022
In this paper, the numerical simulation of molten pool dynamics in laser deep penetration welding of aluminum alloys was established based on the FLUENT 19.0 software.
Jin Peng, Hongqiao Xu, Xiaohong Yang, Xingxing Wang, Shuai Li, Weimin Long, Jian Zhang   +6 more
doaj   +1 more source

True keyhole cochlear implant surgery

American Journal of Otolaryngology, 2023
Minimal invasive Robotic Assisted Cochlear Implant Surgery (RACIS) is a keyhole surgery by definition. It is therefore not possible to visualize the electrode array during insertion in the scala tympani. Hitherto, surgeons visualised the round window via the external auditory canal by folding over the tympanic membrane.
Abari, Jaouad, Heuninck, Emilie, Al Saadi, Mohammad, Topsakal, Vedat   +3 more
openaire   +3 more sources

Programmable Antigen‐Specific Immunity via Self‐Adjuvanting Nanovaccines Co‐Delivering Immune Modulators

Angewandte Chemie, EarlyView.
The self‐adjuvanting vaccine—comprising a covalent conjugate of antigen and adjuvant—was formulated into cationic lipid nanoparticles smaller than 100 nm to facilitate uptake by immune cells, with supplemental adjuvants incorporated to modulate immune responses.
Keita Ito, Yoshiyuki Manabe, Shino Ohshima, Masatoshi Maeki, Manabu Tokeshi, Hiroshi Inaba, Kazunori Matsuura, Kazuya Kabayama, Yoshie Kametani, Koichi Fukase   +9 more
wiley   +2 more sources

Optimising the laser-welded butt-joints of medium carbon steel using RSM [PDF]

, 2005
The optimization capabilities in design-expert software were used to optimise the keyhole parameters (i.e. maximize penetration (P) and minimise the heat input, width of welded zone, (W) and width of heat affected zone (WHAZ)) in CW CO2 laser butt ...
Benyounis, Khaled, Hashmi, Saleem, Olabi, Abdul-Ghani   +2 more
core   +1 more source

From Multi-Keyholes to Measure of Correlation and Power Imbalance in MIMO Channels: Outage Capacity Analysis

, 2011
An information-theoretic analysis of a multi-keyhole channel, which includes a number of statistically independent keyholes with possibly different correlation matrices, is given.
Levin, George, Loyka, Sergey
core   +2 more sources

Mollusk freaks: New teratological cases on marine mollusks from the south pacific ocean [PDF]

, 2018
Indexación: Scopus.The present study provides new documented cases of abnormalities on chitons (hypomerism and coalescence of shell plates), in addition to four new cases on keyhole limpets (closed apical opening), and one new teratologic case on ...
Ibáñez, C.M., Pardo-Gandarillas, M.C., Sanhueza, V.E., Torres, F.I.   +3 more
core   +1 more source