Ramin Hashemi

Dr. Ramin Hashemi

Iran University of Science and Technology, Tehran, Tehrān, Iran
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2018 in Journal of Manufacturing Processes
Verified
Journal Article
Closed access
MHMostafa Habibi
Mostafa Habibi
Ramin HashemiRamin Hashemi
Ramin Hashemi
MTM. Fallah Tafti
M. Fallah Tafti
AAA. Assempour
A. Assempour

14 January 2016 in Journal of Materials Engineering and Performance
Verified
Journal Article
Closed access
PDF file
MHMostafa Habibi
Mostafa Habibi
Ramin HashemiRamin Hashemi
Ramin Hashemi
ESE. Sadeghi
E. Sadeghi
AFA. Fazaeli
A. Fazaeli
AGA. Ghazanfari
A. Ghazanfari
HLH. Lashini
H. Lashini

1 August 2021 in Journal of Alloys and Compounds
Verified
Journal Article
Closed access
Moslem TayyebiMoslem Tayyebi
Moslem Tayyebi
DRDavood Rahmatabadi
Davood Rahmatabadi
AKArmin Karimi
Armin Karimi
MAMaryam Adhami
Maryam Adhami
Ramin HashemiRamin Hashemi
Ramin Hashemi

10 May 2018 in International Journal of Minerals, Metallurgy and Materials
Verified
Journal Article
Open access
PDF file
DRDavood Rahmatabadi
Davood Rahmatabadi
Moslem TayyebiMoslem Tayyebi
Moslem Tayyebi
Ramin HashemiRamin Hashemi
Ramin Hashemi
GFGhader Faraji
Ghader Faraji
In the present study, an Al/Cu/Mg multi-layered composite was produced by accumulative roll bonding (ARB) through seven passes, and its microstructure and mechanical properties were evaluated. The microstructure investigations show that plastic instability occurred in both the copper and magnesium reinforcements in the primary sandwich. In addition, a composite with a perfectly uniform distribution of copper and magnesium reinforcing layers was produced during the last pass. By increasing the number of ARB cycles, the microhardness of the layers including aluminum, copper, and magnesium was significantly increased. The ultimate tensile strength of the sandwich was enhanced continually and reached a maximum value of 355.5 MPa. This strength value was about 3.2, 2, and 2.1 times higher than the initial strength values for the aluminum, copper, and magnesium sheets, respectively. Investigation of tensile fracture surfaces during the ARB process indicated that the fracture mechanism changed to shear ductile at the seventh pass.

1 May 2010 in Computational Materials Science
Verified
Journal Article
Closed access
AAAhmad Assempour
Ahmad Assempour
HNHamid Khakpour Nejadkhaki
Hamid Khakpour Nejadkhaki
Ramin HashemiRamin Hashemi
Ramin Hashemi

9 September 2019 in Mechanics Based Design of Structures and Machines
Verified
Journal Article
Closed access
AGAhmad Ghazanfari
Ahmad Ghazanfari
SSSeyed Soroush Soleimani
Seyed Soroush Soleimani
Mansour KeshavarzzadehMansour Keshavarzzadeh
Mansour Keshavarzzadeh
MHMostafa Habibi
Mostafa Habibi
AAAhmad Assempuor
Ahmad Assempuor
Ramin HashemiRamin Hashemi
Ramin Hashemi
In this study, the effect of through-thickness shear (TTS) stress has been examined on the prediction of forming limit diagrams (FLDs). Determination of the FLD is based on the Marciniak–Kuczynski (M–K) model with some modifications on the stress states for consideration of the TTS stress effects. For solving the equations, the Newton–Raphson method has been used. Furthermore, the Nakazima test has been simulated to investigate the stress state which occurs in the sheet during the test. Results showed that the formability of sheet metal could be better as the through-thickness stress increased. Also, implementation of TTS stress in the present model, the corresponding FLD has better agreement than the conventional FLD with the experimental test result.