Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Ahmed Nassef"'
Publikováno v:
Port Said Engineering Research Journal, Vol 26, Iss 4, Pp 42-49 (2022)
In this study, the ECAP process was conducted using two different dies of channel angles (Φ) 120° and 90° to extrude pure Cu for 2 and 6 passes of route Bc at room temperature. Optical Microscopy (OM) was used to study the microstructure of Cu bef
Externí odkaz:
https://doaj.org/article/123e52de64ec4b2da8578297756f3bd2
Publikováno v:
Port Said Engineering Research Journal, Vol 26, Iss 3, Pp 146-159 (2022)
This study presents intensive numerical analyses of the ring elongation testing technique (RETT) used to characterize the 7175-T7351 aluminum alloy and St 37 carbon steel rings materials. Theoretical solutions were developed to predict the elastic pr
Externí odkaz:
https://doaj.org/article/b983d618a721425482d76b74955f1578
Autor:
A.I. Alateyah, Mohamed M.Z. Ahmed, Majed O. Alawad, Sally Elkatatny, Yasser Zedan, Ahmed Nassef, W.H. El-Garaihy
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 1491-1511 (2022)
Billets of pure Mg were processed using two ECAP dies with internal channel angle of 90° and 120° for 4-passes of route Bc at 225 °C. Finite element analysis was used to investigate the deformation behavior of Mg billets. Electron back-scatter dif
Externí odkaz:
https://doaj.org/article/0fa0d12f0fac4398b682bc82493bf1ed
Publikováno v:
Micromachines, Vol 14, Iss 10, p 1973 (2023)
This article presents the results of an experimental investigation into the effect of process parameters in the precision hard turning of Ti-6Al-4V on chip morphology at both macro and micro levels. It also reports on the control of chip generation t
Externí odkaz:
https://doaj.org/article/abbfa0f40fa246e593641aebc9efea62
Autor:
Massimo Capoccia, Mohamed Ashur Sherif, Ahmed Nassef, David Shaw, Paul Walker, Betsy Evans, Pankaj Kaul, Walid Elmahdy
Publikováno v:
Clinical Case Reports, Vol 11, Iss 1, Pp n/a-n/a (2023)
Abstract Traditionally, the management of type B aortic dissection has been the domain of the vascular surgeons. Timing and type of intervention still generate debate. We sought to review our early experience with the treatment of this condition base
Externí odkaz:
https://doaj.org/article/46baae3147dd4d1494a44c126ae77604
Autor:
Sally Elkatatny, Mohammed F. Alsharekh, Abdulrahman I. Alateyah, Samar El-Sanabary, Ahmed Nassef, Mokhtar Kamel, Majed O. Alawad, Amal BaQais, Waleed H. El-Garaihy, Hanan Kouta
Publikováno v:
Applied Sciences, Vol 13, Iss 13, p 7483 (2023)
This study comprehensively investigates the impact of various parameters on aluminum matrix composites (AMCs) fabricated using the powder metallurgy (PM) technique. An Al-Cu matrix composite (2xxx series) was employed in the current study, and Al2O3
Externí odkaz:
https://doaj.org/article/c1855c10bb6042ceb6ecc16f56ac26fd
Autor:
Ehab Gamil Abd El-Krim, Ahmed Nassef
Publikováno v:
Journal of the General Union of Arab Archaeologists, Vol 6, Iss 2, Pp 1-24 (2021)
(En) Tell Awlad Dawood is a Predynastic and Early Dynastic settlement located in Sharqiya Province. The site is a small Tell. It has been occupied from the beginning of the 4th millennium BC to the Late Period, but its main occupation took place dur
Externí odkaz:
https://doaj.org/article/106afbef14e143228e38744d0363906b
Publikováno v:
Port Said Engineering Research Journal, Vol 25, Iss 1, Pp 101-113 (2021)
The corrosion performance of carbon steel after wide-ranging acquaintance load of aqueous extract of Lawsonia inermis (LI) as a green inhibitor in saline media was inspected. These studies have been supported by means of open-circuit potential (OCP),
Externí odkaz:
https://doaj.org/article/bab24e3e483f4c54b6ce6d643d9bd8f5
Publikováno v:
Port Said Engineering Research Journal, Vol 24, Iss 2, Pp 106-113 (2020)
Surface finish of machined parts is a significant quality mark for a range of application such as aerospace, automotive, power transmission and generation. Therefore, optimization of surface roughness is the key factor for reliability in machining di
Externí odkaz:
https://doaj.org/article/70331f8bd47c4778a46abb5418a4f03c
Publikováno v:
Port Said Engineering Research Journal, Vol 24, Iss 2, Pp 114-121 (2020)
Characteristics of cutting insert are key factors for the reliability of machining of difficult-to-cut materials such as Ti6Al4V alloy. Therefore, in this paper a comparison between the performance of two different materials, ceramic insert coated by
Externí odkaz:
https://doaj.org/article/ae237d636b1f41c6b43e776e11dfc4d8