79 documents found, page 1 of 8

Inverse Cellular Lattices

The deformation mechanisms of classic lattice topologies (e.g., Cubic, Diamond, Octet, and Double Pyramid lattices) and their specific density-dependent mechanical properties have already been thoroughly explored by the scientific community. This study details a novel approach to designing lattices by generating the topologies that correspond to the voids of these classic lattice designs. This is achieved by us...

A methodology for project design parametrization

In today’s fast-paced industrial landscape, businesses face constant pressure to boost productivity. In this context, automation plays a crucial role in the design process, as it can significantly reduce production, maintenance, and design timelines, leading to substantial cost savings. Integrating automation is essential to meet the demands of a competitive market and satisfy increasingly stringent client requ...

Low-cost acoustic cavitation characterization inside of opaque chamber through ...

[Excerpt] Acoustic cavitation, induced by ultrasound, is key in sonolysis (Weissler, 1994). Effective cavitation monitoring is essential but current methods are costly, complex, and polluting. Piezoelectric sensors offer a promising alternative due to their affordability, simplicity, and real-time monitoring capability (Wu et al., 2022).

Effects of ultrasonic cavitation on chemical parameters in wastewater treatment

A simple and comprehensive approach to formulate and solve problems in a non-tr...

[Excerpt] Learning and teaching dynamics is often considered by students and instructors to be a difficult and demanding subject, in the measure that it involves a good number of ingredients, chiefly those related to mechanics, physics, algebra, calculus, numerical methods and computational aspects [1]. This is particularly true when dealing with non-traditional courses. In this context, the present study is ca...

Desenvolvimento virtual de produto: apresentação da unidade curricular

Desenvolvimento virtual de produto, Mestrado em Engenharia Mecânica - apresentação da unidade curricular

Enhanced effects of ultrasonic cavitation on the removal efficiency of ciproflo...

This study investigates the potential of ultrasonic-assisted (20kHz and 65±5 W) adsorption processes in wastewater treatment. The enhanced effects of ultrasonic cavitation on Ciprofloxacin and Cu (II) removal efficiency by adsorption on a Kaolinite and municipal organic waste compost (OC) adsorption media were studied and discussed. Experimental results indicate that within the first minute, more than 95% of th...

Comparison of RANS and LES turbulent flow models in a real stenosis

This study focuses on the performance of various turbulence models in predicting hemodynamic variables within a patient-specific geometry of the Brachiocephalic trunk exhibiting a severe stenosis. Numerical simulations employing Reynolds-averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES) models were conducted, comparing four RANS with two LES models. Results indicated significant differences in turbu...

Evaluating Mixing Methods in MMC Casting: Insights from PIV Analysis

Investigating various stirring and ultrasonic methods also addresses the practical challenges faced in scaling up metal matrix composites (MMC) production. Traditional stir casting methods, while beneficial, have limitations related to the uniformity of particle distribution and the tendency for particle agglomeration and porosity formation. Ultrasonic cavitation, on the other hand, has shown promise in enhanci...

Shielding AZ91D-1%Ca from corrosion through ultrasound melt treatment: a study ...

Magnesium-based materials show great potential for producing biodegradable stents, but their high corrosion rates are a roadblock. This study investigates whether ultrasound melt treatment can change the corrosion response of an extruded AZ91D-1.0%Ca (wt.%) in Earle's Balanced Salt Solution by tailoring the intermetallics' morphology in the as-extruded state. The results showed that the wires from ultrasound-tr...