A5073403231- Metal Forming Simulation Techniques
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- High-Velocity Impact and Material Behavior
- Laser and Thermal Forming Techniques
- Advanced Welding Techniques Analysis
- Welding Techniques and Residual Stresses
- Plasma and Flow Control in Aerodynamics
- Gas Dynamics and Kinetic Theory
- Combustion and Detonation Processes
- Concrete Corrosion and Durability
- Education Pedagogy and Practices
- Tree Root and Stability Studies
- Laser Applications in Dentistry and Medicine
- Head and Neck Anomalies
- Innovations in Concrete and Construction Materials
- Metal Alloys Wear and Properties
- Marine and Offshore Engineering Studies
- Corrosion Behavior and Inhibition
- Hydrogen embrittlement and corrosion behaviors in metals
- Rural and Ethnic Education
- Magnetic Properties and Applications
- Science and Education Research
- Fatigue and fracture mechanics
- Dermatologic Treatments and Research
Universidade Federal Fluminense
2011-2024
Instituto de Estudos Avançados da Universidade de São Paulo
2023
Instituto de Estudios Avanzados
2023
Federal Center for Technological Education Celso Suckow da Fonseca
2018-2022
University of Aveiro
2019-2022
The aim of this paper is to evaluate, predict and analyse the plastic properties formability third-generation advanced high-strength steel (3genAHSS), with a specific focus on USS CR980XG3TM AHSS as reference material. Forming limit diagrams were determined, utilizing range experimental methods, including Nakajima tests, Erichsen uniaxial tensile Bulge test. A pivotal aspect application an sheet metal forming model based Marciniak-Kuczynski analysis simulate localized necking onset. Various...
In this work, the damage behavior of cold-rolled zinc-coated dual-phase steel sheets 600 and 800 grades was evaluated by means standard uniaxial tensile testing, microstructural characterization finite element modeling. The void formation in both steels investigated as a function plastic strain level from digital image processing scanning electron micrographs to quantify average size determine corresponding measures density, area fraction aspect ratio. Based on analysis experimental test...
The third generation of advanced high-strength steels (AHSS) brought attention to the steel and automotive industries due its good compromise between formability production costs. This work evaluated a third-generation AHSS (USS CR980XG3TM) through microstructural X-ray diffraction (XRD) analyses, uniaxial tensile plane-strain tension testing, numerical simulations. damage behavior this is described with Gurson–Tvergaard–Needleman (GTN) model using an identification procedure based on...
The material characterization regarding sheet metal formability is usually assessed by the forming limit curve (FLC). FLC requires specialized and expensive equipment, several samples with different geometries, can be a very time-consuming procedure for data treatment. Alternatively, hole expansion test (HET) Erichsen Cupping Test (ECT) used routine evaluations of mechanical behavior. These tests require fewer quantities easy specimen preparation fast analysis results. HET ECT procedures...
To meet the demands of vehicular safety and greenhouse gas emission reduction, automotive industry is increasingly using advanced high strength steels (AHSS) in production components. With development new generation AHSS, it essential to study their behavior towards manufacturing processes used industry. For this purpose, welding capability newly developed third-generation Gen3 980T steel was investigated Nd:YAG (Neodymium:Yittrium Aluminum Garnet) laser-welding with different parameter...
Steels with different carbon content, 0.11%C and 0.48%C were submitted to a heat treatment for carburization in the surface. The samples analyzed after several types of treatment, including quenching producing martensite. Magnetic Barkhausen Noise (MBN) is directly related microstructure. Samples lower have ferrite, constituent where domain walls can move freely present higher amplitude envelope MBN. It also found that MBN peaks are quite distinct martensite, which permeability, results...
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This work aimed to analyze the damage behavior of cold rolled TRIP780 steel sheet submitted interrupted uniaxial tensile tests performed along rolling direction. The formation voids is investigated as a function straining level using digital image analysis scanning electron micrographs obtain measures void density, area fraction, aspect ratio and mean size. volume fractions both ferrite/martensite retained austenite constituents were obtained from X-ray diffraction measurements. An abruptly...
The present article discusses the design and construction of a contoured nozzle for Mach 7 hypersonic flow production under stagnation pressure up to 14 MPa, temperature around 2,100 K. An in-house code based on Method Characteristics (MOC) axisymmetric case assuming inviscid calorically perfect gas was developed is used determination preliminary internal contour nozzle. boundary layer correction oriented via viscous turbulent CFD solutions gas. chosen manufacturing method combines rapid...
The aim of this work is to analyze the effect anisotropy on formability third generation advanced high strength steel (3genAHSS) from experimental and theoretical point view. reference material USS CR980XG3TM️ AHSS, a 3genAHSS 980T/600Y-retained austenite bearing-high elongation grade. A careful selected characterization has been performed. factors yield stresses have identified tensile tests at several orientations with respect rolling direction. forming limit diagram under linear strain...
The limit strains of dual-phase steels DP600 and 800 were evaluated in this work with a localization model formulated plane-stress conditions using elasto-plastic constitutive equations. In model, geometrical imperfection parameter is defined from the sheet nominal thickness, initial ferrite grain size average surface roughness. proposed identification procedure provided more physically meaning for at best conservative predictions drawing Forming Limit Curve (FLC) range both investigated...
The present article discusses the design and construction of a new Hypersonic Shock Tunnel capable generating flight conditions encountered by vehicle flying at Mach 10 an altitude 30 km. In order to achieve necessary reservoir enthalpy (4.4 MJ/kg) pressure (110 MPa) Combustion Driver is used filled with stoichiometric mixture Hydrogen Oxygen diluted in Helium. driver filling will be 75% He 25% H2+O2 (stoichiometric) ignited through 18 specially built spark plugs distributed along tube wall....
The AA508 aluminum alloy is widely used in the manufacture of road tanks, chemical storage, silos for grain storage and large marine applications.It known that corrosion resistance alloys with more than 3% magnesium very high when exposed to higher temperatures a long time.Corrosion monitoring consists using techniques allows evaluate process can affect integrity material also provide corrective measures ensure life equipment facilities.So, purpose this work study effect heating...