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El-Shekeil1, a, S.
[4] El-Shekeil YA, Sapuan SM, Khalina A, Zainudin ES, O.
Al-Shuja’a, Bulletin of Material Science Vol.
[11] El-Shekeil YA, Sapuan SM, Abdan K, Zainudin ES, BioResources Vol. 6, (2011), p. 4662-4672
[12] El-Shekeil YA, Sapuan SM, Abdan K, Zainudin ES, Materials & Design Vol. 40, (2012), p. 299-303

El-Hofy2,b, Hassan El-Hofy1,c 1Department of Industrial Engineering and Systems Management, Egypt-Japan University of Science and Technology, Egypt 2AMRC with Boeing, University of Sheffield, United Kingdom amohamed.osama@ejust.edu.eg, bm.el-hofy@sheffield.ac.uk, chassan.elhofy@ejust.edu.eg Keywords: CFRP, UAM, Edge trimming, Bouncing-back effect, Statistical analysis Abstract.
UAM reduces the ability of chips to be stacked into the cutting edges [10] Bouncing back phenomena of CFRPs at the end of tool-workpiece engagement was reported by wang et.al [11].
Similar observation was described by wang et al. [11].
‏ [12] Lasri, L., Nouari, M., El Mansori, M.

El-Daly et al. [4] added 0.06 wt.
El-Daly et al. [5] added 1.5 wt.
Mehrabi et al. [6] found that the introduction of 0.1 wt.
El-Daly, A.E.
El-Daly, A.M.

The mole ratio was Ti : Al : TiC : Sn = 1 : 1 : 0.9 : 0.1 (recipe I), Ti : Al : TiC : Sn = 1 : 1 : 0.8 : 0.1 (recipe II), Ti : Al : TiC : Sn = 1 : 1 : 0.7 : 0.1 (recipe III), Ti : Al : TiC : Sn = 1 : 1: 0.6 : 0.1 (recipe IV) respectively.
Although the ratio of Al in these four recipes is surplus relative to the stoichiometric ratio of Ti2AlC, evaporation of Al might improve the proportion of Ti, Al and TiC in the reaction system.
El-Raghy, Synthesis and Characterization of a Remarkable Ceramic Ti3SiC2, J.
El-Raghy, Processing and Characterization of Ti2AlC, Ti2AlN, and Ti2AlC0.5N0.5, Metall.
Vaccaro, The ternary systems: Cr-Al-C, V-Al-C, and Ti-Al-C and the behavior of H-phases (M2AlC), J.

In addition, with increasing the extrusion ratio, UTS and El% of the composite are increased [9].
Materials and Methods To prepare Al-15 wt. % Mg2Si (Al-5.5 wt. % Si-9.7 wt. % Mg) primary composite ingot, pure Al (99.8%), pure Si (99.5%) and pure Mg (99.9%) were used.
The variation of UTS and El% values with extrusion ratios are illustrated in Fig. 3.
Fig. 3: (a) UTS and (b) El% values of hot extruded and solution heat treated Al-15%Mg2Si-1.0%Gd composite at different extrusion ratios Fig. 4 (a) – (c) exhibits the fracture surface of extruded and heat treated Al-15%Mg2Si-1.0%Gd composite at different extrusion ratios.
Zhoub, Microstructural Development of Al-15wt.

Conclusion Figure.8 The comparison of control efficiency of displacement-El Centro wave Figure.6 The ratio of the peak stiffness value of MFAVS and AVS -qianan wave Figure.7 The comparison of control efficiency of acceleration-El Centro wave Figure 9 The ratio of the peak stiffness value of MFAVS and AVS-El Centro wave To sum up the above, the fuzzy control strategy is so effective that nearly the same control efficiency as sign control strategy could be taken by using less additional stiffness (damping).
Figure.4 The comparison of control efficiency of acceleration-qianan wave Figure.5 The comparison of control efficiency of displacement-qianan wave Figure.10 The comparison of control efficiency of acceleration-qianan wave Figure.12 The peak additional stiffness value and damping value of MFAVS and AVS-qianan wave Figure.13 The comparison of control efficiency of acceleration-El Centro wave Figure.14 The comparison of control efficiency of displacement-El Centro wave Figure.11 The comparison of control efficiency of displacement-qianan wave Figure.15 The peak additional stiffness value and damping value of MFAVS and AVS-El Centro wave References [1] G.
Housner et al, Structural Control: Past, Present, and Future, Journal of Engineering Mechanics, Vol.123, No.11, 1997 [2] T.
Kobori, et al, Seismic response controlled structure with active variable stiffness systems, Journal of Engineering Mechanics, Vol.22, 1993 [3] Goto,K.
Of the First World Conference on Structural Control, Los Angeles, USA, 1994 [4] Yomada, M., Goto,K., et al.

However, to improve the WC strength and toughness, Sherif El-Eskandarany et al. [2] added a Co binder to the cemented carbide; however, on the other hand, this process decreased the hardness and wear resistance and limited the corrosion resistance of the cemented carbide [2].
To improve this limitation, Sherif El-Eskandarany [3,4] used a nonmetal binder (MgO, TiC, and Al2O3) to improve the mechanical properties of the nanocomposite WC material; Imasato et al. proved that the smaller diameter for WC grains, the higher hardness and strength, while Kim et al. showed that the rapid sintering improves the hardness and fracture toughness.
Sherif El-Eskandarany, A.
Sherif El-Eskandarany, and A.
Sherif El-Eskandarany, Mechanical solid state mixing for synthesizing of SiCp/Al nanocomposites, J. of Alloys Comp., 279 (1998) pp. 263-271

Optimization of the Impact of Dune Sand, Recycled Rubber Aggregates, and Clay Brick Waste on Eco-Mortar Mechanical Strength by the Taguchi Method KAAB Mohamed Zohaïr1,a*, ATHAMNIA Brahim2,b, DJEDID Tarek3,c and KHELAIFA Hamad1,d 1Hydraulic and Civil Engineering Department, University of El Oued, BP 789, El Oued 39000, Algeria 2Civil Engineering Department, University of Tebessa, Route de Constantine, Tebessa 12002, Algeria 3Laboratory LEVRES, Hydraulic and Civil Engineering Department, University of El Oued, BP 789, El Oued 39000, Algeria a*kaab-mohamed-zohair@univ-eloued.dz, bbrahim.athamnia@univ-tebessa.dz, c tarek-djedid@univ-eloued.dz, dkhelaifahamad@gmail.com *Corresponding author Keywords: Dune sand, Rubber aggregates, Clay brick waste, Eco-mortar, Mechanical strength, Taguchi method.
Liu et al. [21] conducted experiments to evaluate the response of concrete containing rubber particles when subjected to cyclic loading.
In addition, Boukour et al. [20] conducted experimental research to examine how two waste materials could partially replace natural sand in a cement mortar.
In addition, this study uses two types of sand: the first is dune sand (DS) from the El Oued region, and the second is the alluvial sand (AS) from the Djamaa sand pit in El Oued Province.
Mahboub, Spectroscopic characterizations of sand dunes minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD analyses, Silicon. 12 (2020) 147-153

Experimental Al LiF ITO Alq(50nm) NPB(50-dnm) m-MTDATA(dnm) Glass m-MTDATA Al Alq NPB -4.2eV -5.7eV -5.5eV -3.0eV -2.5eV -2.0eV -5.1eV -4.7eV ITO HOMO LUMO Figure 1.
The structure of the device is ITO/m-MTDATA (d nm) /NPB (50-dnm)/Alq3 (50nm)/LiF (0.5 nm)/Al (200 nm), where d = 0, 10, 20 or 30 nm, and the corresponding devices are named as devices 1-4.
Results and discussions The organic electroluminescent(EL) devices show pure green emission originating from Alq3.
Here the device 2 has achieved maximum EL efficiency of 4.30 cd/A, which is more than three times that of the device 1, as can also be seen in table 1.
Conclusion In summary, we have demonstrated efficient multilayer EL devices with well structure utilizing thick layer of a starburst amine compound m-MTDATA as an anode modification buffer layer.

Recently, Speer et al. [1,2] proposed a heat treatment process for producing martensitic steel: quenching and partitioning (Q&P) process.
However, in the Q&P process, the formation of carbides are prevented by adding the element Si or Al, and thus the strength potential has not yet been fully excavated.
The sample subjected to TRIP process shows the best EL (about 17%) and the lowest Rm (only about 1200MPa).
For the sample after Q&T treatment, its Rm is near to 2000MPa, but the El is lower than 10%.
Moreover, because of its higher volume fraction of RA, the EL is higher than that of Q&T sample.