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Muneharu et al. [3] discussed vibration suppression of forced vibration by a wave-absorption control for a lump torsional system.
A nonlinear elastomeric damper or absorber was used to control the torsional vibrations of the crankshaft in internal combustion engines, when subjected to both external and parametric excitation torques by El-Bassiouny [4].
Ostman et al. [5] investigated an active vibration control of the crankshaft in the reciprocating engines by utilizing the measured angular speeds of the crankshaft system.
Gao et al. [6] investigated an active control of torsional vibration of large turbo-generator.
El-Bassiouny.

A python program is developed to model the geometry of SiCp/Al composites with various volume fractions of SiC particles.
Fig.1 shows the two-dimensional models of SiCp/Al composites with SiC reinforcement particles.
Fig.1 The geometrical model of SiCp/Al Fig. 2 The boundary conditions of the model composites Parameter setting The material properties of the 6061aluminum matrix and the SiC particles in SiCp/Al composites are defined separately due to their great difference.
By increasing the volume fraction of SiC particles in SiCp/Al composites, firstly with 20% vol.
[2] El-Gallab M S, Sklad M P, Machining of aluminum/silicon carbide particulate metal matrix composites: Part IV.

Thermodynamically, such a description accounts for bond dissociation by reduction of the strain energy in the material, but the reduction of the net chemical potential, and reduction of the surface free energy are also necessary, as shown in detail by Sergo et al. [14].
Specimens were sectioned into discs, ground, polished, and micro-indented using a Micro-Combi Tester (CSM Instruments, Needham, MA) according to Nychka et al. [17].
El-Ghannam and C.Q.
El-Ghannam, P.
El-Ghannam, E.

Rapid Prototyp J 2011;17:328–50, http://dx.doi.org/10.1108/13552541111156469.5 [5] Sivarupan, T., El Mansori, M., Coniglio, N., & Dargusch, M. (2020).
[7] N Coniglio, N., Sivarupan, T., & El Mansori, M. (2018).
[13] Mckenna N, Singamneni S, Diegel O, Singh D, Neitzert T, George JS, et al.
[14] Mitra, S., Rodríguez de Castro, A., & El Mansori, M. (2018).
[38] Ramesh et al., (2022).

[3] Langer, Michal, et al.
[11] Al-Omran, Abdulrasoul, et al.
[13] Yang, Zhi, et al.
[15] Du, Fengyi, et al.
[16] Wang, Chuanxi, et al.

However, due to the lack of understanding of these mechanisms, conclusions attained by many researchers (Voon et al. [7-9]，Shedid et al.[10-11]) are not unified.
L.et al.
Shedid, Robert G.Drysdale,Wael W.El-Dakhakhni.: Journal of Structural Engineering, 2008,134(11): 1754-1767
[10]Marwan T.Shedid, Wael W.El-Dakhakhni, et al.: Journal of Structural Engineering, 2009,134( 11): 2032-2044
El-Dakhakhni. et al.: Journal of Structural Engineering, 2010,24(1):4-18

Weight Al Si Fe Cu Mn Mg Cr Zn Al 3003 97.1-96.8 0.6 0.7 0.2-0.5 1.3 ----- ----- 0.1 Al 3005 96.35 0.6 0.7 0.3 1.3 0.4 0.1 0.25 Ge-detector L.
S-parameter as a function of thickness reduction for 3003 Al alloy.
S-parameter as a function of thickness reduction for 3005 Al alloy.
Abdel-rahman et. al., Progress in Physics , vol. 3 , 2006, p. 66-69
El-Sayed, Aluminum Transactions, vol. 1,2, 2000, p. 91

C., et al., [16] however with slight modifications.
P. et al. [20].
[4] El-Asfoury, Mohamed S., Mohamed NA Nasr, Koichi Nakamura, and Ahmed Abdel-Moneim.
[6] El-Asfoury, Mohamed S., Mohamed NA Nasr, Koichi Nakamura, and Ahmed Abdel-Moneim.
[9] El-Moneim, A.

The content of Ti, Al and Fe compounds in bauxite is very important.
roasting process of red mud with alkali carbonate in air at >1050 0C, then filtration, precipitation of Al(OH)3 and calcination 2002 Tathavadkar et al.
References [1] E.L.
[2] E.L.
[3] E.L.

Recently, Gall et al. [16] and Jay et al. [12] have measured the torsion hysteresis of the of the magnetostricitve film-substrate cantilever system.
In order to validate our model, referring to structure that has been studied by Jay et al. [12], we have calculated the torsion hysteresis of the cantilever system in the fig. 4.
When the step line of the torsion curve is taken into account, the calculated torsion hysteresis is qualitatively agrees with the butterfly curve measured by Jay et al. [12].
This discrepancy is due to the single domain model that has employed in our theory to predict the structure those Jay et al. [12] have experimentally studied which is exactly in the multidomain state.
Socha et al.: J.