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Abstract
Laminate metal composites (LMCs) can improve many properties including fracture toughness, fatigue behaviour, impact behaviour, wear, corrosion, and damping capacity or they provide enhanced formability or ductility. Aluminium alloys are selected for their optimal combination of physical and mechanical properties. One advantage is that light-metal components lead to an overall reduced weight and, thus, to reduced energy consumption. Another advantage, which may be just as important for man environmental point of view, is the fact that aluminium components may be recycled with relatively low energy demands. Nowadays, the application of high strength age hardenable aluminium alloys is growing throughout the aerospace industry.
The main objective of the present work is to overcome the locking between the matrix (Al/Si alloy) and the reinforcment (low carbon galvanized and black steel plates) problem by reinforcing the matrix with three different types of reinforcement ; three separate steel plates (group 1) , two separate steel plates(group 2) and continous bending steel plate (group3) and to investigate the effect of hole (diameter , shape and distribution) and reinforcement shape on the mechanical properties of the laminated composites.
The composites were manufactured by using sand casting technique. Tension and wear tests were carried out on specimens with different reinforcements.
The tensile results showed that the highest level of strength and ductility were found for plates with 8 mm hole diameter for the three groups, galvanized and black plates, compared with other plates. The highest level of strength and ductility was found for 8 mm hole diameter galvanized plates, group 1.
It was also found that increasing hole diameter above 8 mm led to lowering strength and ductility level for the three groups, galvanized and black plates.
Furthermore, the 0° tilt angle results in higher strength and ductility of the examined composites in case of galvanized and black plates compared with other tilt angles.