RSS 1.0Departamento de Engenharia Mecânica
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Non-newtonian blood modeling in intracranial aneurysm hemodynamics: impact on the WSS and OSI metrics for ruptured and unruptured cases
Oliveira, Iago Lessa
; Santos, Gabriel Bertacco ; Gasche, José Luiz ; ; (Journal of Biomechanical Engineering, 2021) [Artigo]
When simulating blood flow in intracranial aneurysms (IAs), the Newtonian model seems to be ubiquitous. However, analyzing the results from the few studies on this subject, the doubt remains on whether it is necessary to ... -
Pulsed Nd:YAG laser welding of UNS S 32205 duplex stainless steel
Crespo, Gillian da S.; Padilha, Josiel L. ; Sokei, Celso R. ; Tokimatsu, Ruis C. ; Gallego, Juno ; Ventrella, Vicente A. (Materials Science Forum, 2016) [Trabalho apresentado em evento]
This paper reports an experimental study of laser welding on duplex stainless steel UNS S32205 employed in the oil and natural gas industries. A pulsed Nd:YAG laser was used to weld the specimens. Bead on plate condition ... -
The Effect of Periodic Maintenance on Pervious Concrete Pavements
Da Silva, Rodrigo Garozi; De Albuquerque, Maria Da Consolação Fonseca ; Bortoletto, Marcelo ; De Spósito, Felipe Almeida ; Gonçalves, Aparecido Carlos ; De Morais Alcântara, Marco Antonio (Revista Materia, 2021) [Artigo]
Pervious concrete pavements are interesting from an environmental and social viewpoint. However, this type of pavement has as the main disadvantage of losing permeability over time by the clogging process. The aim of this ... -
Analysis of the Influence of Contamination in Lubricant by Biodiesel in a Pin-On-Disk Equipment
; Gonçalves, Aparecido Carlos; Da Consolação Fonseca de Albuquerque, Maria ; Chavarette, Fábio Roberto ; ; De Almeida, Estevão Fusaro (Materials Research, 2022) [Artigo]
The introduction of biodiesel to commercial diesel is being increased every year. The need to check this addition to the engine and lubricant is important for automakers and internal combustion engine manufacturers. The ... -
Design, construction and evaluation of a device for the manufacture of ferrogram for analytical ferrography
; Gonçalves, Aparecido Carlos; Ribeiro, Victor Hugo ; Chavarette, Fábio Roberto ; (Lubrication Science, 2022) [Artigo]
The dynamism of the reliability of machines and equipment has the objective of availability, leading to the development of several techniques of predictive maintenance, to define the ideal point for the intervention. Among ... -
Reliability analysis using experimental statistical methods and ais: Application in continuous flow tubes of gaseous medium
; Chavarette, Fábio Roberto; Gonçalves, Aparecido Carlos ; ; ; Panosso, Alan Rodrigo ; (Acta Scientiarum - Technology, 2021) [Artigo]
The motivation for the development of this work arose from the observation of maintenance in pressure vessels, which are categorized as highly hazardous security risk products. The costs of detecting failures in the ... -
Comparison between autogenous welding and with addition of nickel on nd:yag pulsed laser welded UNS s32750 duplex stainless steel
; ; ; ; Ventrella, Vicente Afonso (ESSC and DUPLEX 2019 - 10th European Stainless Steel Conference - Science and Market, 6th European Duplex Stainless Steel Conference and Exhibition, 2019) [Trabalho apresentado em evento]
Duplex stainless steels (DSS) have a biphasic microstructure with equal proportions of austenite and ferrite, which gives them excellent mechanical strength and corrosion resistance compared to austenitic stainless steels. ... -
Finite element analysis of the total forming force of thin-walled metallic tube junctions employing elastomers
; Menezes, Miguel Ângelo; (Advanced Structured Materials, 2012) [Artigo]
Among the forming processes can be emphasized the metallic junction forming using elastomers. This forming process presents a considerable number of variables, as for instance: the definition of the necessary relationship ... -
Determinação das deformações limites de chap as metálicas anisotrópicas considerando o atrito no estiramento com punção
; ; Menezes, Miguel Ângelo (65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010, 2010) [Trabalho apresentado em evento]
This work aims at determining the influence of anisotropy of the material using the new Hill's quadratic and friction on the prediction of strain limits for using analysis of formability of sheet metal forming limit diagrams. ... -
Structural FRF acquisition via electric impedance measurement applied to damage location
Lopes, Vicente; Pereira, Joao Antonio ; Inman, Daniel J. (Proceedings of SPIE - The International Society for Optical Engineering, 2000) [Trabalho apresentado em evento]
Continuing development of new materials makes systems lighter and stronger permitting more complex systems to provide more functionality and flexibility that demands a more effective evaluation of their structural health. ... -
Structural FRF acquisition via electric impedance measurement applied to damage location
Lopes, Vicente; Pereira, Joao Antonio ; Inman, Daniel J. (Proceedings of the International Modal Analysis Conference - IMAC, 2000) [Artigo]
Continuing development of new materials makes systems lighter and stronger permitting more complex systems to provide more functionality and flexibility that demands a more effective evaluation of their structural health. ... -
Determinação da altura de onda solitária a partir da medição de velocidade orbital
(International Symposium on Hydraulic Structures - XXII Congreso Latinoamericano de Hidraulica, 2006) [Trabalho apresentado em evento]The purpose of this experimental work is to investigate solitary wave's characteristics that are generated by impact of granular solid material into water. It was used glass balls to generate the waves. From Boussinesq's ... -
Integration of biomass gasification systems in a sugarethanol factory: Study of cases
(ECOS 2009 - 22nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 2009) [Trabalho apresentado em evento]This work presents a thermodynamic analysis of the integration of biomass gasification systems in a sugarethanol factory. It is considered the effect of gasification of the straw, bagasse and vinasse separately as well as ... -
Springback analysis of thin bent sheets on elastomeric die
(International Journal of Material Forming, 2010) [Artigo]One critical problem of sheet formed products is its dimensional accuracy. This is related to springback (elastic recovery), after forming load releasing. It may happen in any forming process; however, it is easier noted ... -
H2 and H∞ - Norm control of intelligent structures using LMI techniques
(Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA, 2002) [Trabalho apresentado em evento]Linear Matrix Inequalities (LMIs) is a powerful tool that has been used in many areas ranging from control engineering to system identification and structural design. There are many factors that make LMI appealing. One is ... -
A control-volume finite-element method (CVFEM) for unsteady, incompressible, viscous fluid flows
(Numerical Heat Transfer, Part B: Fundamentals, 2001) [Artigo]A control-volume finite-element method (CVFEM), to simulate unsteady, incompressible, and viscous fluid flows, using nine-noded quadrilateral elements, has been developed. The Navier-Stokes equations in primitive variables ... -
OPTIMAL LINEAR CONTROL APPLIED TO A NON-IDEAL CAPSULE SYSTEM WITH UNCERTAIN PARAMETERS
; ; ; ; Moro, Thiago Carreta; (Journal of Applied Mathematics and Informatics, 2022) [Artigo]
The design of mechanical structures aims to meet criteria, to-gether with the safety of operators and lives in the vicinity of the equipment. Thus, there are several cases that meeting the desired specification causes the ... -
Recycling Al-Si Alloy by Semisolid Material Dragged During Continuous-Casting Strip Processing
Filho, Antonio de Pádua Lima; Ferreira, Lucas Veronez Goulart ; Neto, Pedro Barbosa de Oliveira ; ; de Oliveira, Rodrigo Alessandro Nunes ; Yamakami, Wyser José ; Bazani, Marcio Antonio ; (Solid State Phenomena, 2022) [Trabalho apresentado em evento]
Recycled Al–Si (9.2%) alloy contaminated with Fe (0.3%), Pb (3.1%) and Sn (11.4 %) was cast and poured at 650 ºC, approximately 50 ºC above the liquidus line. A cooling slope was used to obtain a semisolid material that ... -
Gaussian Process NARX Model for Damage Detection in Composite Aircraft Structures
Da Silva, Samuel; ; ; (Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2022) [Artigo]
This article demonstrates the Gaussian process regression model's applicability combined with a nonlinear autoregressive exogenous (NARX) framework using experimental data measured with PZTs' patches bonded in a composite ... -
On the Frequencies for Structural Health Monitoring in Plates with Symmetrical Damage: An Analytical Approach
Lopes, Kayc W.; Gonsalez-Bueno, Camila G. ; Bueno, Douglas D. (Journal of Nondestructive Evaluation, 2022) [Artigo]
The damage detection process in structures has been an important challenge for the engineering community. The design of structural health monitoring (SHM) systems usually involves selection of actuators and sensors, their ...