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Tests were performed by machining UNS A92024 (Al-Cu) alloy cylindrical bars, in T3 and O states, using cutting tools with removable uncoated WC-Co inserts (from SECO, ref.
Cu Mg Mn Si Fe Zn Ti Cr Al 4.0 1.5 0.6 0.5 0.5 0.25 0.15 0.10 Rest Table 1.
U�S A92024 Al-Cu alloy composition (mass percentage).
Salguero, in: Study of the Quality Surface in the High Speed Milling of Al-Cu Alloys, in CD proceendings of the 2nd CISIF-MESIC, Madrid, Spain (2007)
El-Hofy: Machining Technology.

Cr(Ш) and Mn(II) can be completely separated from Pb(II), Ni(II), Co(II), Cd(II), Zn(II), Cu(II), Fe(III) and Al(III) in the solution.
Abou-El-Sherbini: Talanta 68 (2006), p. 1550–1559 [3] M.V.
Chem, 76(2004), p. 7007-7012 [10] Hara H, Kobayashi H, Maeda M,et al. : Anal.
Res, 43(2004), p. 1665-1672 [12] Sano M, Okamura J, Ikeda A,et al. : Langmuir, 17(2001), p. 1807-1810 [13] Boyd E P, Ketchum D R, Deng H,et al. : Chem.
Mater, 9(1997), p. 1154-1158 [14] Fu H, Xie C, Dong J,et al. : Anal.

Kuhl et al. [8] also gave a model to simulate the turbulent combustion in confined TNT explosions, the predicted pressures histories are quite similar to the measured pressures histories for all cases studied.
Rao Guoning et. al. for their valuable advice and assistant in carrying out this work.
[7] A.L.
[8] A.L.
[13] E.L.

., et al., Effect of Zn doping on structural, magnetic, and optical properties of cobalt ferrite nanoparticles synthesized via.
[7] Manikandan, V., et al., Fabrication of lithium substituted copper ferrite (Li-CuFe2O4) thin film as an efficient gas sensor at room temperature.
[8] Ma, J., et al., Recent progress in multiferroic magnetoelectric composites: from bulk to thin films.
[10] Fu, Y., et al., Copper ferrite-graphene hybrid: a multifunctional heteroarchitecture for photocatalysis and energy storage.
[12] El-Sayed, A., Electrical conductivity of nickel–zinc and Cr substituted nickel–zinc ferrites.

Also, several authors have reported Electroluminescence (EL) under direct current [55-58] and alternate current polarization [33, 59, 60].
Du, A.L.
Al-Jassim, R.K.
El-Sayed: J.
Kaja, A.L.

Alauddin et al. [3] experimentally investigated the influence of machining conditions on the average cutting forces in the end milling of Inconel 718 under dry conditions using uncoated carbide inserts.
Lorentzon et al. [4] observed from turning experiments under dry cutting conditions that when machining alloy 718 at lower cutting speeds (below 50 m/min), the chip produced is long and continuous.
Recently, Devillez et al. [8] presented the results of surface integrity and cutting forces in turning Inconel 718 alloy under wet and dry conditions.
The miracle coating consists of (Al, Ti) N and has high strength to the substrate and good heat and oxidation resistance to enhance the tool life when machining hardened work-piece.
El Baradi, M.J.S.

Claer et al. [5] studied on fatigue models for sandwich beams under both single-step and multi-step loading.
Mahi et. al. [8] studied on cyclic fatigue of sandwich composite beams under three-point bending.
Kanny et al. [10] studied on different loading frequencies on the sandwich beams with foam core.
Belouettar, Abbadi et. al. [11] studied on fatigue behaviour of composite honeycomb materials under four point loading.
El Mahi, M.

Aatola and al. [2] conducted a comparative study between several vibration analysis methods.
In work of Bouzouane and al. [3] two types of wavelets have been tested on real cases: Daubechies and Morlet.
Djebala and al. [5] proposed an approach that benefits the local nature of wavelet analysis and its ability to detect transients.
Parey and al. [6] using empirical mode decomposition (EMD) used as a processing tool for non-stationary and nonlinear signals.
El Badaoui, F. 

Song et al [10] reported orrosion behaviour of magnesium in ethylene glycol and found that corrosion rate of magnesium decreased with increasing concentration of ethylene glycol.
E.N.ElSawy et al [11] studied the effect of nitrates on corrosion of Mg and two Mg-based alloys (AS31 and AZ91) in presence and absence of buffers (phosphate and borate) of pH 8.
The objective of this study was to determine the buffer borate capacity and pH affect the corrosion behaviou of Mg-7.3 Al alloy.
Fig. 1 Microstructure of Mg-7.3 Al alloy Corrosion Rates of Mg-7.3Al Alloy.
Vol.5 (2003), p.840 [9] Yair Tamar, Daniel Mandler: Electrochimica Acta Vol. 53 (2008), p.5118 [10] Guangling Song ,David StJohn: Corrosion Science Vol. 46 (2004), p.1381 [11] E.N.ElSawy, H.A.El-Sayed, H.A.ElShayeb: Journal of Alloys and Compounds Vol. 492 (2010), p.697 [12] H.

Based on the obtained results the speed of the synthesis of the Ni-Al structure was determined.
Kirdyashkin et al.).
The combustion of the (Ni+20%Al) mixture was visualized (Fig. 2). 0 ms 3 ms 5 ms Fig. 2.
Ni-Al combustion imaging The results of imaging allow us to study the combustion process and reveal a number of specific features of the synthesis.
El. 4 (1988) 457-460