Optimization of Mechanical Properties of AA 5083 Nano SiC Composites using Design of Experiment Technique
Abstract Composites with aluminium alloy matrix and ceramic reinforcements are popular candidates in automotive, aerospace, defense and other industries because of their high strength-to-weight ratio, stiffness, impact strength, wear resistance, etc. In the present study AA 5083 / Nano SiC composite were fabricated by stir casting. A 2-level Full Factorial design of experiments (DOE) was used to study the influence of process parameters like casting temperature, stirrer speed, and weight percent of reinforcement on hardness of composites. Mathematical model was developed to investigate which parameters significantly affect the hardness of composites. The effect of parameters on the response and adequacy of hardness model developed were tested by employing ANOVA and Fisher’s F-test. This model can be used to select the optimum process parameters for obtaining the composites hardness within the range of experimental frame work.
AbstractRapid regenerative medicine development requires new advanced biomaterials. Chitosan which is known of its unique properties like biocompability, biodegradability, bioactivity, antibacterial activity is a great candidate for scaffolds for cell culture. In this paper, a novel strategy for antioxidant aerogels obtainment method is presented. Biomaterials were synthesized under microwave-assisted conditions and modified with Tiliaplatyphyllos extract. Ready products were characterized over their physicochemical properties, morphology and biological properties including bioactivity and antimicrobial activity. Performed analyses confirmed obtainment of crosslinked biomaterial with advanced properties such as positive effect on cells proliferation and inhibition of Staphylococcus aureus growth.