Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Luís Borrego"'
Publikováno v:
Metals, Vol 14, Iss 6, p 663 (2024)
In the present work, a study of the fatigue strength of two materials widely used in the production of molds, namely, the AISI P20 and AISI H13 steels, is presented. The tests were performed at a constant amplitude with a stress ratio of R = 0 using
Externí odkaz:
https://doaj.org/article/02e6488227824b06a37a2101e721a907
Autor:
Haúla F. Haider, Diogo Ribeiro, Sara F. Ribeiro, Nuno Trigueiros, Helena Caria, Luís Borrego, Iola Pinto, Ana L. Papoila, Derek J. Hoare, João Paço
Publikováno v:
Frontiers in Aging Neuroscience, Vol 14 (2022)
Tinnitus is a phantom sound perceived in the absence of external acoustic stimulation. It is described in a variety of ways (e.g., buzzing, ringing, and roaring) and can be a single sound or a combination of different sounds. Our study evaluated asso
Externí odkaz:
https://doaj.org/article/9bd14742b32743e0862f33745310d19b
Akademický článek
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Autor:
Rui F. Fernandes, Joel de Jesus, Luís Borrego, Luís Vilhena, Amílcar Ramalho, José A. M. Ferreira
Publikováno v:
Metals, Vol 12, Iss 3, p 433 (2022)
Maraging steels are used in several industries, namely in the molds industry. The determination of fatigue crack propagation resistance in 18Ni300 maraging steel at the Paris regime is a vital issue for safety-relevant components, which are designed
Externí odkaz:
https://doaj.org/article/2d32dfb5cee3410f86d8d895dc194c84
Autor:
Luís Santos, Joel de Jesus, Luís Borrego, José A. M. Ferreira, Rui F. Fernandes, José D. M. da Costa, Carlos Capela
Publikováno v:
Metals, Vol 11, Iss 5, p 835 (2021)
This investigation concerns about of fatigue behavior under controlled loading and under strain control for hybrid specimens with parts produced with conventional processes in steel AISI H13 and the stainless steel AISI 420 and the rest part produced
Externí odkaz:
https://doaj.org/article/6d504b25df4d4f69a8e7fbf7deff0f6a
Publikováno v:
Frattura ed Integrità Strutturale, Vol 13, Iss 48 (2019)
The Compact Tension Shear (CTS) specimen is used to study fracture and fatigue under mixed mode I/II loading conditions. Existing K solution was developed for fracture studies and it does not consider the effect of crack deflection. The aim of presen
Externí odkaz:
https://doaj.org/article/95e7abc215144ec6b8a7c5e0e54bc44f
Publikováno v:
Materials, Vol 14, Iss 4, p 737 (2021)
Selective laser melting (SLM) is an additive manufacturing process for producing metallic components with complex geometries. A drawback of this process is the process-inherent poor surface finish, which is highly detrimental in materials submitted t
Externí odkaz:
https://doaj.org/article/dfa4313dcd8a4d0d978ed6b236b3c7b6
Publikováno v:
Procedia Structural Integrity. 42:1054-1060
Autor:
Luís Borrego
Publikováno v:
Revista Portuguesa de Imunoalergologia. 27
Autor:
Luís, Borrego, Paulo, Quaresma
Publikováno v:
Studies in health technology and informatics. 183
Medical reports are, quite often, written and stored in computer systems in a non-structured free text form. As a consequence, the information contained in these reports is not easily available and it is not possible to take it into account by medica