Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Carlos M. A. Silva"'
Autor:
Rui F. V. Sampaio, Pedro M. S. Rosado, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Luís G. Rosa, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 8, Iss 4, p 180 (2024)
This paper delves into the formability of material deposited by wire arc additive manufacturing. It presents a novel dieless Nakajima testing procedure that offers a practical solution for obtaining strain loading paths up to failure directly from th
Externí odkaz:
https://doaj.org/article/d0c0877fb7514dabacb33de02f572199
Autor:
João P. M. Pragana, Beatriz Brito, Ivo M. F. Bragança, Carlos M. A. Silva, Paulo A. F. Martins
Publikováno v:
Metals, Vol 14, Iss 6, p 716 (2024)
This paper is focused on improving material formability in hybrid wire-arc additive manufacturing comprising metal forming stages to produce small-to-medium batches of customized parts. The methodology involves fabricating wire arc additive manufactu
Externí odkaz:
https://doaj.org/article/6acc6d0768634b3a9b5185397dcecdea
Autor:
Rui F. V. Sampaio, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Chris V. Nielsen, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 3, p 107 (2023)
This paper introduces a new formability test based on double-action radial extrusion to characterize material formability in the three-dimensional to plane-stress material flow transitions that are found in bulk metal-formed parts. The presentation d
Externí odkaz:
https://doaj.org/article/32bf3a688dc248b8ad2cdc3c3b8357ec
Autor:
Rui F. V. Sampaio, João P. M. Pragana, Ricardo G. Clara, Ivo M. F. Bragança, Carlos M. A. Silva, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 6, Iss 6, p 159 (2022)
This paper presents new rotational and longitudinal symmetric self-clinching fasteners to fabricate reliable connections in busbars with low electrical resistance for energy distribution systems. Connections consist of form-closed joints that are hid
Externí odkaz:
https://doaj.org/article/dd6cbce054dd48d09b1b22207b3b2f02
Autor:
Ana Beatriz Lopez, José Pedro Sousa, João P. M. Pragana, Ivo M. F. Bragança, Telmo G. Santos, Carlos M. A. Silva
Publikováno v:
Machines, Vol 10, Iss 11, p 1069 (2022)
In this paper, we present a non-destructive testing (NDT) technique based on in situ detection of defects up to 100 °C by ultrasonic testing (UT) during construction of parts by a metal additive manufacturing technology known as wire arc additive ma
Externí odkaz:
https://doaj.org/article/3f064c8d348046978e25f0e9b1f94f71
Autor:
João P. M. Pragana, Rui F. V. Sampaio, Ivo M. F. Bragança, Carlos M. A. Silva, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 6, Iss 4, p 74 (2022)
This paper presents a new mechanical joining process to assemble aluminum busbars in energy distribution systems. The process is based on the extension of injection lap riveting to the connection of busbars made from the same material as the rivets a
Externí odkaz:
https://doaj.org/article/438382c2ee1d4f43a74f848b79aafbbe
Autor:
Valentino A. M. Cristino, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 5, Iss 4, p 140 (2021)
This paper is focused on the hybridization of additive manufacturing with single-point incremental forming to produce stiffening grooves in thin metal parts. An analytical model built upon in-plane stretching of a membrane is provided to determine th
Externí odkaz:
https://doaj.org/article/a9f8fe996bf74abc9ac2bc2d0da96b89
Autor:
João P. M. Pragana, Stephan Rosenthal, Ivo M. F. Bragança, Carlos M. A. Silva, A. Erman Tekkaya, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 4, Iss 4, p 115 (2020)
The objective of this paper is to present a new hybrid additive manufacturing route for fabricating collector coins with complex, intricate contoured holes. The new manufacturing route combines metal deposition by additive manufacturing with metal cu
Externí odkaz:
https://doaj.org/article/4eff610da4f24f9292add4f9d71ceda1
Autor:
Cláudio P. Seabra, Ana Catarina Sousa, Ivo M. F. Bragança, Carlos M. A. Silva, M. Paula Robalo, M. Amélia R. Loja, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 4, Iss 3, p 65 (2020)
The aims and objectives of this paper are two-fold: first to investigate the production of a green composite manufactured with renewable materials (i.e., jute fabric as reinforcement, acrylate epoxidase soybean oil (AESO) as matrix and sisal particle
Externí odkaz:
https://doaj.org/article/b907e94468974c44af0febf7ea4947bd
Autor:
BRUNO ZILBERMAN, RENAN KOBAL DE OLIVEIRA ALVES CARDOSO, CARLOS M. PIRES-SILVA, ISABEL ALVES DOS SANTOS
Publikováno v:
Zootaxa. 5264:405-417
Microlia Casey is a genus of small rove beetles from the New World and Australasia. Many species are recorded to be associated with the flowers of Cucurbitaceae, Solanaceae, Asteraceae, and Monimiaceae. In this work, a new species from Brazil associa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8587cf440ecb749a87f024588206b3ce
https://doi.org/10.11646/zootaxa.5264.3.8
https://doi.org/10.11646/zootaxa.5264.3.8