Zobrazeno 1 - 10
of 136
pro vyhledávání: '"El Hachemi Amara"'
Selected, peer reviewed papers from the LAPAMS 2010, Algiers from 27th to 30th November 2010.
Autor:
Ahmed Abdelmalek, Lebogang Kotsedi, Zeyneb Bedrane, El-Hachemi Amara, Marco Girolami, Malik Maaza
Publikováno v:
Nanomaterials, Vol 12, Iss 21, p 3786 (2022)
In this study, we theoretically investigate the response of a germanium thin film under femtosecond pulsed laser irradiation. Electron and lattice temperatures, as well as material-specific optical properties such as dielectric function and reflectiv
Externí odkaz:
https://doaj.org/article/36744193fafe4feea1f7f5f19d85d46e
Publikováno v:
Optical Spectroscopy and Imaging for Cancer Diagnostics ISBN: 9789811258954
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86ae208114353fcc179719bc3d5ca1f5
https://doi.org/10.1142/9789811258961_0004
https://doi.org/10.1142/9789811258961_0004
Autor:
F. Hamadi, Karim Kheloufi, Kada Boughrara, Cherifa Abid, El-Hachemi Amara, Samia Aggoune, Toufik Tamsaout
Publikováno v:
Defect and Diffusion Forum. 412:107-114
In order to predict the effect of the Marangoni convection and the morphology of melted stainless steel powder, during the selective laser melting (SLM) process, a transient three-dimensional numerical model is developed at the mesoscale. The evoluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9440b3a4b9dfcdfd37c6b6823ccca6c7
https://doi.org/10.4028/www.scientific.net/ddf.412.107
https://doi.org/10.4028/www.scientific.net/ddf.412.107
Publikováno v:
Defect and Diffusion Forum. 399:154-163
This paper investigates the effect of the laser cutting parameters on the heat-affected zone, and on the boundary layer of stainless steel processing. A new analytical resolution based on the boundary layer theory is used to deduce the interaction ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f3a18dc358d3cb0e7d82c6ba4445d69
https://doi.org/10.4028/www.scientific.net/ddf.399.154
https://doi.org/10.4028/www.scientific.net/ddf.399.154
Autor:
Ahmed Abdelmalek, Zeyneb Bedrane, El-Hachemi Amara, Belén Sotillo, Vibhav Bharadwaj, Roberta Ramponi, Shane M. Eaton
Publikováno v:
Applied Sciences, Vol 8, Iss 10, p 1826 (2018)
Ablation of copper using multipulse femtosecond laser irradiation with an 800 nm wavelength and 120-fs pulse duration is investigated theoretically. A two-temperature model, which includes dynamic optical and thermal-physical properties, is considere
Externí odkaz:
https://doaj.org/article/846c6c608b184d7ca8baafcc6367aef8
Publikováno v:
Journal of Modeling and Optimization. 11:30-35
Ablation of copper using multipulse femtosecond laser irradiation with an 800 nm wavelength and 900-fs pulse duration is investigated theoretically using a dynamic tow temperature model. Our results show that the irradiation of a metal film by burst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::395d49f81a078f932f346919122a5c19
https://doi.org/10.32732/jmo.2019.11.1.30
https://doi.org/10.32732/jmo.2019.11.1.30
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(11)
The fundamental physical phenomena occurring during the process of laser cutting are still only slightly understood, and thus the need to develop mathematical and numerical models to optimize the process parameters has become unavoidable for obtainin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aecdcfec3d501c5ebac2414b0e26a65b
https://pubmed.ncbi.nlm.nih.gov/33175738
https://pubmed.ncbi.nlm.nih.gov/33175738
Publikováno v:
South African Journal of Industrial Engineering, Vol 28, Iss 3, Pp 178-187 (2017)
South African Journal of Industrial Engineering, Volume: 28, Issue: 3, Pages: 178-187, Published: 2017
South African Journal of Industrial Engineering, Volume: 28, Issue: 3, Pages: 178-187, Published: 2017
A theoretical approach based on a numerical simulation using experimental data is proposed as a contribution to the study of laser-based additive manufacturing by direct energy deposition (DED). The aim is to simulate the stages of layer-by-layer bui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c594a5548ca0deb0f8616932006e6991
http://sajie.journals.ac.za/pub/article/view/1855
http://sajie.journals.ac.za/pub/article/view/1855
Autor:
Malik Maaza, Roberta Ramponi, El-Hachemi Amara, L. Kotsedi, F. Bireche, K. Kaviyarasu, Shane M. Eaton, Xolile Fuku
Publikováno v:
Applied Surface Science. 421:213-219
The two-temperature model was used to gain insight into the thermal evolution of the hot electrons and the crystal lattice of the molybdenum thin coating during femtosecond laser treatment. The heat from the laser raised the bulk temperature of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1375c74c7022078536c305bc26294ed4
https://doi.org/10.1016/j.apsusc.2016.11.216
https://doi.org/10.1016/j.apsusc.2016.11.216