Search results

Astankhov et al.[5] adopted upper bound method to study the effects of cutting velocity in terms of the orthogonal cutting force.
El-Midany et al. [7] proposed a method called "Ocfill" for the selection of multi-plungers sizes and path of tool points.
[7] T.T.El-Midany, A.

Chemical composition, mass% C Mn P S Si Al Fe Cu Zn Ti T-Al Cr Al1050 - - - - 0.08 99.74 0.15 0.01 0.01 0.01 - - S25C 0.26 0.39 0.017 0.013 0.25 - - - - - - - NHH 0.78 0.89 0.023 0.08 0.21 - - - - - 0.002 0.03 Table 2.
Mechanical properties of test materials σY /σ0.2 [MPa] σB [MPa] El [%] φ [%] HV [HV] Al1050 80 103 26.7 69.8 39 S25C 298 495 28.3 64.7 155 NHH 823 1260 15.7 34.0 271 σY, Yielding strength, σ0.2, Proof strength, σB, Tensile strength, El, Elongation ratio, φ, Reduction ratio in area, HV, Hardness by mechanical machining.

Recognizing merits and limitations of the previous works on the topic, a new procedure has been proposed in Fascetti et al. [4] to evaluate the collapse resistance of RC frame structures: it combines time-history simulations together with non-linear “push-down” analyses to define the most critical sequence of removing resisting elements , providing designers information about possible weaknesses (i.e. lack of local ductility or redundancy of the system) of the building. 1.1 Disproportionate Collapse The concept of Collapse is well known being an Ultimate Limit State close to integral loss of 1) functionality together with 2) the total loss of structural integrity and 3) potential human losses.
The authors proposed two different choices for this parameter, the details of which are presented in Fascetti et al. [4] 4 Modeling Issues It has been already shown that the modeling of progressive collapse phenomena involves different non-standard techniques, so that the numerical simulation of the structural response is a topic of great interest.
El-Tawil, Pushdown Resistance as a Measure of Robustness in Progressive Collapse Analysis, Engineering Structures 33 (2011) 2653-2661
El-Tawil, Macromodel-based Simulation of Progressive Collapse: RC Frame Structures, J.

El Sayed, A.A.
El Maradny, R.K.
Al Farawati, M.I.
Al Zobidi, Photocatalytic degradation of phenol in natural seawater using visible light active carbon modified (CM)-n-TiO2 nanoparticles under UV light and natural sunlight illuminations, Chemosphere, 91 (2013) 307-313

Nasr-El-Din, A.
Al-Yami, A.
Al-Aamri, S.
El- Marsafawi: Study of cement reactions using the rotating disk apparatus.

Tang et al. [10] discussed that the high aspect ratio fillers show promising potential to improve the dielectric permittivity and energy density of the nanocomposites.
According to Bai et al. [1], the aggregation of the fillers may result in an increase in porosity and a nonuniform distribution of the ceramic fillers, leading to a decrease of the dielectric constant.
El.
El.

[3] H.El-Didamony, M.Heikal, I.Aiad, S.Al-Masry: Behavior of delayed addition time of snf superplasticizer on microsilica-sulphate resisting cements.
[4] H.El-Didamony, I.Aiad, M.Heikal, S.Al-Masry: Impact of delayed addition time of SNF condensate on the fire resistance and durability of SRC-SF composite cement pastes.

Soliman, El.
El-Sebaie, Journal of Materials Processing Technology 216, (2015), 520–528
[19] GAO En-zhi, LI Hong-wei, et al., Transactions of Nonferrous Metals Society of China 19, (2009), 433 – 437
Reddy, et al., International Journal of Advanced Materials Manufacturing & Characterization, 6, (2014), 261 – 264.

., Otrosh, Yu. et. al.; Sadkovyi, V., Rybka, E., Otrosh, Yu.
[16] Cao, R.; Agrawal, A.K.; El-Tawil, S.
Huang, et al.
[21] El-Tawil, S.; Severino, E.; Fonseca, P.

A similar study about viscoelastic fluid flow was done by Joo et al [23] but for higher Dean Numbers.
Brahim Timite et al [7] observed effects of pulsation on the development of secondary flow of viscous fluids.
From mesh size 3, we obtain a result almost identical to the one measured by Bara et al.
Ould-El-Moctar, H.
[31]Bibhuti Bhusan Nayak et al.