Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Manuel Freitas"'
Publikováno v:
Crystals, Vol 13, Iss 6, p 969 (2023)
Under strain control tests and cyclic loading, extruded magnesium alloys exhibit a special mechanism of plastic deformation (“twinning” and “de-twining”). As a result, magnesium alloys exhibit an asymmetric material behavior that cannot be fu
Externí odkaz:
https://doaj.org/article/bda82aff43c344688bf145a333143a18
Publikováno v:
Crystals, Vol 13, Iss 4, p 688 (2023)
In this work, the magnesium alloy AZ31BF subjected to proportional and non-proportional loads has been studied. For this purpose, a series of experimental multiaxial fatigue tests were carried out according to the ASTM E466 protocol. The main objecti
Externí odkaz:
https://doaj.org/article/bd434dbe14644ec4890d984e0da310fd
Publikováno v:
Forces in Mechanics, Vol 4, Iss , Pp 100024- (2021)
Additive Manufacturing (AM) has carved a significant leap in mechanical design history, offering an almost infinite geometric freedom. It enables complex geometries with lower weight and enhanced behaviour, like topology optimisation. AM material mec
Externí odkaz:
https://doaj.org/article/e3c4ca453dab4eafbbe8cb417b310969
Publikováno v:
Metals, Vol 12, Iss 1, p 89 (2022)
In this paper, we investigate the cyclic response of AISI 303 stainless steel subjected to non-proportional loads with different amplitude ratios between shear stresses and normal stresses. Based on the experiments, a relationship between the proport
Externí odkaz:
https://doaj.org/article/ada9c04d670f42b1a6df132a18d89d64
Publikováno v:
Metals, Vol 11, Iss 10, p 1616 (2021)
In this work, the mechanical behavior of the AZ31B-F magnesium alloy under cyclic loading is analyzed with the goal of contributing to the advancement of its use in the design of AZ31B-F components and structures. To achieve this goal, an experimenta
Externí odkaz:
https://doaj.org/article/a38f808b76a04cb18f44b1d00fc5745d
Publikováno v:
Frattura ed Integrità Strutturale, Vol 13, Iss 49 (2019)
With the introduction of new materials and advances in medical science, the endodontic files have changed since the early days of root canal treatments. In the late days, we have seen an increasing use of Nickel-Titanium (NiTi) alloys, to the detrime
Externí odkaz:
https://doaj.org/article/aee60aa3cb23489195032aee3ec91b1a
Publikováno v:
Frattura ed Integrità Strutturale, Vol 13, Iss 48 (2019)
Fatigue damage and life assessment of multiaxial loadings is still an issue yet to resolve. Many methods have been proposed with promising agreements with the experimental results. However, the performance of such methods is, more than often, purely
Externí odkaz:
https://doaj.org/article/b224cc04acde40b6bfc35f5baff800c1
Review of Multiaxial Testing for Very High Cycle Fatigue: From ‘Conventional’ to Ultrasonic Machines
Autor:
Pedro Costa, Richard Nwawe, Henrique Soares, Luís Reis, Manuel Freitas, Yong Chen, Diogo Montalvão
Publikováno v:
Machines, Vol 8, Iss 2, p 25 (2020)
Fatigue is one of the main causes for in service failure of mechanical components and structures. With the development of new materials, such as high strength aluminium or titanium alloys with different microstructures from steels, materials no longe
Externí odkaz:
https://doaj.org/article/ecbd26cfcbcc46c4927aabd1ddd83eb4
Publikováno v:
Scientific Bulletin of the ''Petru Maior" University of Tîrgu Mureș, Vol 7 (XXIV), Iss 2, Pp 49-52 (2010)
The paper study and tests the use of Visco-Elastic Memory Foam in ergonomic shoe insoles application. To maximize comfort needs, Memory Foam responds to the unique curves and pressures points of the person’s soles. This application is not necessari
Externí odkaz:
https://doaj.org/article/d58662f3298a4d75a60d3f76564cca4b
Com o rápido e progressivo envelhecimento da população mundial, torna-se necessário repensar as estruturas e tipologias existentes para gero-habitação. Com a evolução da medicina moderna, o aumento da qualidade de vida e da esperança média
Externí odkaz:
https://hdl.handle.net/10216/155874
