gears are one of the most critical components in power transmission system of an automobile and also many rotating machinery. many studies have been conducted on optimum gear design. the main objective is to design different aluminium metal matrix composite spur gears before and after optimization. aluminium metal matrix material composites are preferred mostly due to their low density. also th...

The paper describes results obtained from plate-impact pressure-shear friction experiments to investigate the phenomena of high-speed slip at metal-on-metal interfaces. Using a CH toolsteel/Ti-6Al-4V tribo-pair the authors have studied the effects of normal pressure, slip-speed, temperature and surface roughness on the evolution of the dynamic slip-resistance. Moreover, a finite-element procedu...

En el presente trabajo se realiza una investigación sobre las propiedades mecánicas y comportamiento frente a corrosión del compuesto de matriz metálica Al 7075. El cual preparó partir 7075 como lodo rojo refuerzo, mediante uso un proceso fundición por agitación en dos pasos. porcentaje volumen refuerzo varía 0% 15%. La densidad material calculó principio Arquímedes, mayor que la básica. distri...

[This retracts the article DOI: 10.1186/1743-7075-11-26.].

Fully reversed stress-controlled tension–compression fatigue experiments (R = −1) were conducted to study the cyclic deformation and behavior of 7075-T651 aluminum alloys with without a surface mechanical rolling treatment (SMRT). The strain amplitude, ratcheting effect, asymmetric base metal (BM) SMRT specimens analyzed. showed more remarkable effects asymmetry under high stresses. Fatigue tes...

Abstract For an extrusion process of 7075 Al alloy, the direction initial blank is changed to study mechanical properties formed plates and characterize their microstructure. The as-received bar extruded alloy. secondary deformation along perpendicular direction. results show that anisotropy two samples decreases obviously after deformation. yield strength ultimate tensile ED90 sample lower tha...