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Online since: October 2016
Authors: Trevor A. Dean, Denis J. Politis, Lei Zhu, Kai Lun Zheng, Jian Guo Lin
Zheng et al. [5]investigated the use of the “solution heat treatment, cold die forming and quenching” (HFQTM) [6]process for aluminium alloys with macro-textured tools, which enabled the blank temperature at the flange area to be relatively preserved.
Zheng et al. [9] has established the buckling model of aluminium alloys in the cold stamping process with the use of macro-textured tooling surfaces.
The details of the equations are discussed by Lin et al. [10].
Further details of the equations can be found in Zheng et al.[9].
El Fakir, L.
Zheng et al. [9] has established the buckling model of aluminium alloys in the cold stamping process with the use of macro-textured tooling surfaces.
The details of the equations are discussed by Lin et al. [10].
Further details of the equations can be found in Zheng et al.[9].
El Fakir, L.
Online since: May 2024
Authors: Othmane Noureddine, Afaf Chakir, Mohammed Alami, Mohammed Assouag, Fahed Elamarty
Najim et al. [31] observed a gradual rise in the density of PP filled with CaCO3.
Peng et al. [28] found that the MFR of HPP was 14.7 g/10 min.
Al-Juhani and M.
El Mechtali et al., “Mechanical and Thermal Properties of Polypropylene Reinforced with Almond Shells Particles: Impact of Chemical Treatments,” Journal of Bionic Engineering, vol. 12, no. 3, pp. 483–494, Jul. 2015, doi: 10.1016/S1672-6529(14)60139-6
Al-haj Ali, and S. al-zahrani, “High Density Polyethylene/Micro Calcium Carbonate Composites: A Study of the Morphological, Thermal, and Viscoelastic Properties,” vol. 119, Feb. 2011, doi: 10.1002/app.33064
Peng et al. [28] found that the MFR of HPP was 14.7 g/10 min.
Al-Juhani and M.
El Mechtali et al., “Mechanical and Thermal Properties of Polypropylene Reinforced with Almond Shells Particles: Impact of Chemical Treatments,” Journal of Bionic Engineering, vol. 12, no. 3, pp. 483–494, Jul. 2015, doi: 10.1016/S1672-6529(14)60139-6
Al-haj Ali, and S. al-zahrani, “High Density Polyethylene/Micro Calcium Carbonate Composites: A Study of the Morphological, Thermal, and Viscoelastic Properties,” vol. 119, Feb. 2011, doi: 10.1002/app.33064
Online since: September 2023
Authors: Saloua El Euch Khay, Hend Zbidi
New Selection Process for Retaining Walls Based on Life Cycle Assessment and Economic Concerns
Hend Zbidi1,2,a* and Saloua El Euch Khay1,b
1University of Tunis El Manar, National Engineering School of Tunis, Laboratory of Materials, Optimization, and Environment for Sustainability, B.P. 37 Le Belvédère, Tunis, Tunisia.
2Higher Institute of Technological Studies at Rades, Tunisia
azbidi.hend@gmail.com, bsaloua.eleuch@enit.utm.tn
Keywords: Earth-retaining walls, Life cycle assessment, Cumulative energy demand, CO2 emissions, Cost.
Al-Manaseer, Structural concrete: theory and design, Hoboken, Wiley, 6 (2015)
Al-Manaseer, Structural concrete: theory and design, Hoboken, Wiley, 6 (2015)
Online since: December 2022
Authors: Ojo Sunday Isaac Fayomi, O. Joshua Okeniyi, Biola Mathew Biodun
By combining nano-silica and chitosan, for instance, Mirzadeh et al [129] made a hybrid composite film.
Surg Neurol 61:216–220 Zhao S, Siqueira G, Drdova S et al (2020) Additive Manufacturing of Silica Aerogels.
Ahmad, et al. 2007.
J Environ Chem Eng 9:105571. https://doi. org/10.1016/j.jece.2021.105571 El-Shetehy M, Moradi A, Maceroni M et al (2021) Silica Nanoparticles Enhance Disease Resistance in Arabidopsis Plants.
Chemosphere 90:653–656. https:// doi.org/10.1016/j.chemosphere.2012.09.033 El-Gazzar N, Almanaa TN, Reda RM et al (2021) Assessment the Using of Silica Nanoparticles (Sio2nps) Biosynthesized from Rice Husks By Trichoderma Harzianum Mf780864 as Water Lead Adsorbent for Immune Status of Nile Tilapia (Oreochromis Niloticus).
Surg Neurol 61:216–220 Zhao S, Siqueira G, Drdova S et al (2020) Additive Manufacturing of Silica Aerogels.
Ahmad, et al. 2007.
J Environ Chem Eng 9:105571. https://doi. org/10.1016/j.jece.2021.105571 El-Shetehy M, Moradi A, Maceroni M et al (2021) Silica Nanoparticles Enhance Disease Resistance in Arabidopsis Plants.
Chemosphere 90:653–656. https:// doi.org/10.1016/j.chemosphere.2012.09.033 El-Gazzar N, Almanaa TN, Reda RM et al (2021) Assessment the Using of Silica Nanoparticles (Sio2nps) Biosynthesized from Rice Husks By Trichoderma Harzianum Mf780864 as Water Lead Adsorbent for Immune Status of Nile Tilapia (Oreochromis Niloticus).
Online since: September 2013
Authors: S. Sisodia, A. Bandyopadhyay, S. Srikanth, P. Saravanan, D. Saravanan, K. Ravi
The steel fulfills the basic pre-condition for austenitic metastability and grain refinement through “Strain-induced Martensitic Transformation and Reversion to Austenite” (SIMTR) technique, as proposed by Tomimura et al [11].
(a) (b) Fig.6 Microstructures of as-received hot rolled, solution-annealed and pickled 301LN stainless steel: (a) Optical image (b) Secondary electron image Table 3 Tensile properties and hardness of as-received solution-annealed and pickled 301LN HRC samples Direction YS (MPa) UTS (MPa) YS/UTS ratio % El Strain hardening exponent (n) Hardness a¢-Martensite content (%) Longitudinal 332.06 811.77 0.41 63.79 0.62 96.2 HRB 1.6 Longitudinal 330.69 819.33 0.40 61.74 0.64 Transverse 349.03 831.10 0.42 61.80 0.64 Transverse 351.78 831.00 0.42 63.05 0.64 Findings from experimental cold rolling.
Table 4 Tensile properties of 301LN coil samples after cold rolling in Hillé experimental cold rolling mill % Cold redn Direction YS (MPa) UTS (MPa) YS/UTS ratio %El Strain hardening exponent (n) Hardness (HRC) a¢-Martensite content (%) 45 Transverse 1259.60 1488.17 0.85 6.30 0.25 46.4 98.4 Transverse 1324.35 1476.40 0.90 4.89 0.22 50 Transverse 1180.14 1556.84 0.76 5.65 0.30 46.5 ~100 Transverse 1200.74 1548.01 0.78 3.66 0.43 The volume fraction of martensite and εs markedly influence the achievement of nano/ ultrafine structure in Strain-Induced Martensitic Transformation and its Reversion to austenite (SIMTR).
Table 5 Properties achieved in 301LN ASS strips through experimental cold rolling and short annealing simulations in Gleeble 3500 C thermo-mechanical simulator (based on single furnace length of 16 m in AP Line-1) Steel Peak temp (oC) Heat rate (oC/s) Anneal time (s) Simulated line speed (mpm) YS (MPa) UTS (MPa) % El Strain hardening exponent (n) YS/UTS ratio Hardness (HRC) a¢-Martensite content (%) 301LN (45% CR) 800 5 160 6 681.99 999.64 46.32 0.3036 0.68 34.5 3.7 5.83 137 7 679.24 1037.90 41.14 0.2885 0.65 33.8 2.8 6.67 120 8 746.74 1058.50 38.73 0.2604 0.71 31.0 2.7 7.5 107 9 661.68 1017.30 39.14 0.2763 0.65 28.4 2.0 8.33 96 10 679.34 1030.05 41.44 0.3113 0.66 31.9 2.1 9.17 87 11 617.15 1012.39 46.47 0.3140 0.61 30.5 2.4 10 80 12 644.22 1017.30 45.57 0.3430 0.63 32.4 2.4 750 4.69 160 6 809.13 1125.21 36.81 0.2274 0.72 36.0 8.9 5.47 137 7 779.40 1122.26 36.98 0.2285 0.69 30.7 8.1 6.25 120 8 736.73 1115.40 39.14 0.2146 0.66 35.5 7.0 7.03 107 9 785.29 1088.91 34.75 0.2145 0.72 36.5 6.5
(a) (b) Fig.6 Microstructures of as-received hot rolled, solution-annealed and pickled 301LN stainless steel: (a) Optical image (b) Secondary electron image Table 3 Tensile properties and hardness of as-received solution-annealed and pickled 301LN HRC samples Direction YS (MPa) UTS (MPa) YS/UTS ratio % El Strain hardening exponent (n) Hardness a¢-Martensite content (%) Longitudinal 332.06 811.77 0.41 63.79 0.62 96.2 HRB 1.6 Longitudinal 330.69 819.33 0.40 61.74 0.64 Transverse 349.03 831.10 0.42 61.80 0.64 Transverse 351.78 831.00 0.42 63.05 0.64 Findings from experimental cold rolling.
Table 4 Tensile properties of 301LN coil samples after cold rolling in Hillé experimental cold rolling mill % Cold redn Direction YS (MPa) UTS (MPa) YS/UTS ratio %El Strain hardening exponent (n) Hardness (HRC) a¢-Martensite content (%) 45 Transverse 1259.60 1488.17 0.85 6.30 0.25 46.4 98.4 Transverse 1324.35 1476.40 0.90 4.89 0.22 50 Transverse 1180.14 1556.84 0.76 5.65 0.30 46.5 ~100 Transverse 1200.74 1548.01 0.78 3.66 0.43 The volume fraction of martensite and εs markedly influence the achievement of nano/ ultrafine structure in Strain-Induced Martensitic Transformation and its Reversion to austenite (SIMTR).
Table 5 Properties achieved in 301LN ASS strips through experimental cold rolling and short annealing simulations in Gleeble 3500 C thermo-mechanical simulator (based on single furnace length of 16 m in AP Line-1) Steel Peak temp (oC) Heat rate (oC/s) Anneal time (s) Simulated line speed (mpm) YS (MPa) UTS (MPa) % El Strain hardening exponent (n) YS/UTS ratio Hardness (HRC) a¢-Martensite content (%) 301LN (45% CR) 800 5 160 6 681.99 999.64 46.32 0.3036 0.68 34.5 3.7 5.83 137 7 679.24 1037.90 41.14 0.2885 0.65 33.8 2.8 6.67 120 8 746.74 1058.50 38.73 0.2604 0.71 31.0 2.7 7.5 107 9 661.68 1017.30 39.14 0.2763 0.65 28.4 2.0 8.33 96 10 679.34 1030.05 41.44 0.3113 0.66 31.9 2.1 9.17 87 11 617.15 1012.39 46.47 0.3140 0.61 30.5 2.4 10 80 12 644.22 1017.30 45.57 0.3430 0.63 32.4 2.4 750 4.69 160 6 809.13 1125.21 36.81 0.2274 0.72 36.0 8.9 5.47 137 7 779.40 1122.26 36.98 0.2285 0.69 30.7 8.1 6.25 120 8 736.73 1115.40 39.14 0.2146 0.66 35.5 7.0 7.03 107 9 785.29 1088.91 34.75 0.2145 0.72 36.5 6.5
Online since: June 2020
Authors: Abdalla H. Mihdy Jassim, Hikmat Banimuslem
Mihdy Jassim1,a* and Hikmat Adnan Banimuslem2,b
1*University of Al-Qadisiyah, Alqadisiyah, Iraq
2University of Babylon, Faculty of Science, Iraq
a*abdalla.alafloogee@qu.edu.com and bhikmatadnan@gmail.com
Keywords: Hybrid materials; MWCNTs; Phthalocyanine; DC-conductivity; FTIR.
[66] M.M.El-Nahass, H.S.
El-Bahy , and Z.A.El Sayed , FTIR, TGA and DC electrical conductivity studies of phthalocyanine and its complexes, J. of Molecular Structure, 753(1-3) ( 2005) 119-126
[66] M.M.El-Nahass, H.S.
El-Bahy , and Z.A.El Sayed , FTIR, TGA and DC electrical conductivity studies of phthalocyanine and its complexes, J. of Molecular Structure, 753(1-3) ( 2005) 119-126
Online since: August 2021
Authors: Mohammed Abbas Al-Jumaili, Hamid Athab Al-Jameel
Al-Jumaili1,a* and Hamid A.
Al-Jameel1,b* 1Faculty of Engineering, Civil Engineering Department, University of Kufa, Najaf, Iraq.
Seo et al. [11] conducted a laboratory study to find a mechanical model for rutting performance.
The crushed aggregate materials (coarse and fine aggregate) were gotten from the Al-Nibaei quarry region.
El-Haggan, M.
Al-Jameel1,b* 1Faculty of Engineering, Civil Engineering Department, University of Kufa, Najaf, Iraq.
Seo et al. [11] conducted a laboratory study to find a mechanical model for rutting performance.
The crushed aggregate materials (coarse and fine aggregate) were gotten from the Al-Nibaei quarry region.
El-Haggan, M.
Online since: September 2024
Authors: Lorenzo Donati, Riccardo Pelaccia, Sara Di Donato, Barbara Reggiani, Marco Negozio
Segatori, et al., Effect of liquid nitrogen die cooling on extrusion process conditions Key Eng.
Donati, et al., Scientific Benchmark 2015: Effect of choking and bearing length on metal flow balancing in extrusion dies, Mater.
Donati, et al., Industrial Benchmark 2015: process monitoring and analysis of hollow EN AW-6063 extruded profile, Mater.
Segatori et al., Extrusion Benchmark 2017: Effect of Die Design on Profile Quality and Distortions of Thin C-Shaped Hollow Profiles, Mater.
El Mehtedi, B.
Donati, et al., Scientific Benchmark 2015: Effect of choking and bearing length on metal flow balancing in extrusion dies, Mater.
Donati, et al., Industrial Benchmark 2015: process monitoring and analysis of hollow EN AW-6063 extruded profile, Mater.
Segatori et al., Extrusion Benchmark 2017: Effect of Die Design on Profile Quality and Distortions of Thin C-Shaped Hollow Profiles, Mater.
El Mehtedi, B.
Online since: June 2020
Authors: Abdelkader Djelloul, Djamel Hamana, Sabrina Iaiche, Chahra Boukaous, David Alamarguy
The lower Zn/Al molar ratio around 0.035/0.06 produced only ZnO as a single phase, suggesting the Al insufficient quantity.
Hoppe et al., M–Y.
Guan et al. and R.
The theoretical weight percent of ZnO/ZnAl2O4 films considering only Zn and Al is 29.22% Al and 70.78% Zn.
[19] E.L.
Hoppe et al., M–Y.
Guan et al. and R.
The theoretical weight percent of ZnO/ZnAl2O4 films considering only Zn and Al is 29.22% Al and 70.78% Zn.
[19] E.L.