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According to El-Tayeb and Liew [2], rainy and humidly environment can cause real problem to vehicle safety, as it reduce the friction coefficient of frictional brake pad applications to a level of concern.
Besides, according to Eriksson et.al [6], friction film is more easily formed in dry environments and preferentially by the pads with low metal content.
El-Tayeb, and K.W.
El-Tayeb, and K.W.
[5] S.W., Kim, et al., A comprehensive study of humidity effects on friction, pad wear, disc wear, DTV, brake noise and physical properties of pads, SAE International. (2011)

The metal Al was used as the cathode.
The entire organic layers and the Al cathode were deposited without exposure to the atmosphere.
Normalized electroluminescence (EL) spectra of three devices at 9 V are illustrated in Fig. 3(a).
(a) (b) Fig. 3 (a) Normalized EL spectra of three devices.
The EL spectra of Device B at the voltages of 6, 8 and 10 V were showed in Fig. 3(b).

Investigation of the Mechanical Properties in Al/Al3Zr FGMs Fabricated by Centrifugal Casting Method Shimaa El-Hadad1, 2,a, Hisashi Sato3, b, Yoshimi Watanabe1,c 1 Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan 2 Department of Manufacturing Technology, Central Metallurgical Research & Development Institute, P.O.BOX 87, Helwan, Cairo, Egypt 3 Department of Techno-Business Administration, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan a chm86501@stn.nitech.ac.jp,b sato.hisashi@nitech.ac.jp, c yoshimi@nitech.ac.jp Keywords: Al-5%Zr FGMs, centrifugal force, microstructure, intermetallics distribution, mechanical properties.
In this study, some mechanical properties of Al/Al3Zr FGMs were investigated.
Mechanical Properties of Al/Al3Zr FGMs Hardness Distribution.
From compression tests, the 0.2% proof stresses were measured for Al/Al3Zr FGMs.
Fig. 6 Stress strain curve for Al/Al3Zr FGMs cast under G=120 and G=30.

Currently, such characterization is typically performed through the use of electro- (EL) and photoluminescence spectroscopy or imaging.
For electroluminescence (EL) measurements, obtaining spectral information from specific extended defects is quite difficult and is typically acquired with very low spectral resolution [4].
For the images presented here, 28 A/cm2 was passed through 4H-SiC pin diodes with an Al implanted belt surrounding the 0.93x0.93 mm diode.
A gridded top-side contact was used to allow EL to be collected through the top of the device.
Finally, EL spectra from a (4,4) IGSF in Zhdanov notation exhibited two emission lines.

This paper reviews a few of these recordings on Al and Mg MMCs and also some future development in this field.
The maximum value of hardness of 87.5 HV of the Al6061-CNT composite was obtained at 620˚C.Kim et al [3] studied the friction and wear characteristics of CNT-Al composites manufactured by hot pressing (HP) and spark plasma sintering (SPS) processes.
The effect of ball-milling time on mechanical properties of CNT-Al composites was studied by Liu et al [6] and the CNT-Al composite, when produced by ball-milling for 6 hours, had 42.3% more yield strength when compared to Al matrix, manufactured by same processing history.
El Borady [11] studied properties of CNT-Al strips and the Al–0.5 wt. % CNT strips exhibited improved tensile strength, yield strength, Young’s modulus as well as lower density.
El Borady; Carbon nanotube-reinforced aluminium strips; Composites Science and Technology, 68 (2008), 486–492

Three one story-two-bay RC frames were constructed and tested by Guo Zixiong, et al.
The four optional models are excited respectively by El Centro wave, Taft and artificial-wave.
Excited by El Centro wave b.
Vol.17(1996),p.27 (In Chinese ) [5] Li Yingmin, et al: Earthquake Engineer and Engineer Vibration.
Vol.32(2002),p.460 (In Chinese ) [7] Guo Zixiong, et al: China Civil Engineering Journal.

[12] Pan Xu, et.al.
Han, at el.
[24] Singh, B., et al.
[25] Li Helin, et.al.
[26] Li Fagen, et.al.

Nasif et al. [1] developed Z shaped heat exchanger and measured its sensible, and latent effectiveness.
Nasif et al. [2] developed an opposite shape to the above mentioned Z shaped heat exchanger and obtained its effectiveness mathematically.
Al-Waked, G.
Al-Waked, M.
Al-Waked, M.

Effect of Ageing on Microstructures, Electrical Properties and PALS of Aircraft Al Alloy 2024 Abdullah A.Refeay, N.A.Kamel, M.A.Abdel-Rahman, Y.A.Lotfy and Emad A.
The detected positron lifetimes, corresponding to trapping to precipitations, are significantly above the bulk lifetime of the undisturbed Al matrix.
Since this is valid for pure Al-Cu alloys as well, vacancy like defects in the precipitations seems to be responsible for the detected positron lifetime.
Abd El-Azimc: Materials and Design, 23 (2002) 153-159 [4] N.
Abd El-Azi: Materials & Design, 23[2] (2002) 153-159 [5] M.

The driving frequencies were decreased when the EL (elastic length) of the stator was increased.
The maximum displacements were obtained when the ration CL/EL was 0.7.
The resonant frequencies were decreased when the EL (elastic length) of the stator was increased.
Al has maximum displacement, as a sequences of SUS, steel, copper, and brass.
When the CL (ceramic length) / EL(elastic length) was increased from 0.5 to 0.7, higher speed and torque were obtained, but the speed and torque were decreased when the CL / EL was increased from 0.7 to 0.9.