Elastic properties such as modulus of elasticity, shear modulus and Poisson ratio are important properties in some engineering applications. Determination of elastic modulus (e.g., by tension test, etc.) will destroy the material, and it is not useful for future purposes. We can also determine the elastic properties by nondestructive testing (NDT) without destroying the material. The aim of the present study is to evaluate the elastic constants (modulus of elasticity, shear modulus and Poisson ratio) of Al 7075 reinforced with 4, 8, and 10 wt.% of Al2O3 nanoparticles using phased array ultrasonic measurements. The semi-solid technique was used to prepare the Al7075/Al2O3 nanocomposite. A phased array ultrasonic apparatus was used to calculate the elastic properties in terms of the velocity of longitudinal and shear waves. The results showed that modulus of elasticity and shear modulus increased with increasing Al2O3 wt.%. The maximum modulus of elasticity and shear modulus attained in this study were 77.24 ± 0.53 GPa and 29.77 ± 0.22 GPa, for the Al 7075 with 10 wt. % of Al2O3, respectively. These results demonstrate the potential of using phased array ultrasonic measurements to calculate the elastic properties of  Al 7075/Al2O3 nanocomposite.
 
Special Issue of AEIC 2024 (Mechanical & Chemical and Material Engineering  Session)