39 documents found, page 1 of 4
Smart textiles for health monitoring in industrial environments: a framework fo...
Vilarinho, Bruna Abreu; Vieira, Andre; Nunes-Pereira, João; Parente, João; Pires, Ivan Miguel Serrano; Velez, Fernando J.The occupational health and safety of workers in industrial plants are increasingly compromised through exposure to thermal, physical, and psychological stressors. Wearable sensors embedded in garments have been introduced as a promising technology for real-time, continuous health monitoring without compromising workers' mobility or comfort. This paper reviews recent literature on wearable sensor technologies e...
Plasma Actuators Based on Alumina Ceramics for Active Flow Control Applications
Rodrigues, Frederico; Shvydyuk, Kateryna; Nunes-Pereira, João; Pascoa, Jose; Silva, AbilioPlasma actuators have demonstrated great potential for active flow control applications, including boundary layer control, flow separation delay, turbulence control, and aircraft noise reduction. In particular, the material used as a dielectric barrier is crucial for the proper operation of the device. Currently, the variety of dielectrics reported in the literature is still quite restricted to polymers includi...
Manufacturing and characterisation of a piezoresistive strain sensor based on t...
Gonçalves Ferreira, Rodrigo; Pereira Silva, A; Nunes-Pereira, JoãoDue to an ever-increasing amount of population focusing more on their personal health, thanks to rising living standards, there is a pressing need to improve personal healthcare devices. These devices presently require laborious, time-consuming, and convoluted procedures that heavily rely on cumbersome equipment, causing discomfort and pain for the patients during invasive methods such as sample-gathering, bloo...
CFRP laminates enhanced with graphene nanoparticles in multifunctional applicat...
Parente, J.M.; Carvalho, Ana; Nunes-Pereira, João; Reis, Paulo; Pereira Silva, AIn automobile, aeronautical, aerospace, sports and energy fields, there has been an increase of the use of carbon fibre reinforced polymers (CFRP) due their considerable advantages, such as, low weight, static and fatigue strength as well as corrosion resistance1. The addition of nanoparticles, in particular carbon allotropes, like graphene nanoplatelets (GNP) or carbon nanotubes (CNT) allow not only enhanced m...
Attribution of somatosensory properties to an upper limb prosthesis
Fonseca, Gonçalo; Nunes-Pereira, João; Pereira Silva, AThe nervous system is a complex network composed by cells, tissue, and organs that have the ability of receiving, transmit, regulate, and send information and stimuli, not only within our body but from our surroundings1. This information is produced by a complex system of neurochemical and electrical reactions that produce the perceptions of heat, smell, taste, proprioception, and touch that lead to physical re...
Dielectric barrier discharge plasma actuators based on thermosetting composites...
Nunes-Pereira, João; Rodrigues, Frederico; Abdollahzadehsangroudi, Mohammadmahdi; Pina dos Santos, Paulo Sérgio; Silva, Marco; Pereira Silva, AThe massive use of fibre reinforced plastics (FRP) in several industrial sectors such as aeronautics, aerospace, or wind turbines, raises serious environmental concerns with respect to the end-of-life of these structures, based on their poor recyclability. The low density of FRP gives it outstanding specific properties, such as strength and stiffness, when compared to materials with high recyclability rates, su...
3D Printed Robotic Hand with Piezoresistive Touch Capability
Fonseca, Gonçalo; Nunes-Pereira, João; Silva, AbilioThis work proposes the design of a low-cost sensory glove system that complements the operation of a 3D-printed mechanical hand prosthesis, providing it with the ability to detect touch, locate it and even measure the intensity of associated forces. Firstly, the production of the prosthetic model was performed using 3D printing, which allowed for quick and cheap production of a robotic hand with the implementat...
Long-lasting ceramic composites for surface dielectric barrier discharge plasma...
Shvydyuk, Kateryna; Rodrigues, F.F.; Nunes-Pereira, João; Pascoa, José; Lanceros-Mendez, Senentxu; Silva, A PereiraThe developed research presents a novel experimental study of the cost-effective MgO-Al2O3, MgO-CaZrO3 perovskite, and thermally stable YSZ ceramic composites for DBD plasma actuators in aerospace applications. This study focuses on the implementation of ceramic DBD plasma actuators for aerodynamic flow control and ice creation mitigation. For this purpose, electrical power consumption analysis, induced flow ve...
Multifunctional Ceramics for Aeronautical and Aerospace Applications
Shvydyuk, Kateryna; Nunes-Pereira, João; Rodrigues, Frederico; Pascoa, Jose; Lanceros-Mendez, Senentxu; Pereira Silva, AIn the areas of aeronautics and aerospace, ceramic composites play an essential and increasing role due to their superior performance and tailorable properties, exhibiting highly specialized mechanical, thermal, and electric features1. Their main applications include thermal protection systems (TPS), thermal barrier coatings (TBC), and dielectric barrier discharge (DBD) plasma actuators, both for instrumentatio...
Review of Ceramic Composites in Aeronautics and Aerospace: A Multifunctional Ap...
Shvydyuk, Kateryna O.; Nunes-Pereira, João; Rodrigues, Frederico Miguel Freire; Silva, AbilioThe quest for increased performance in the aeronautical and aerospace industries has provided the driving force and motivation for the research, investigation, and development of advanced ceramics. Special emphasis is therefore attributed to the ability of fine ceramics to fulfill an attractive, extreme, and distinguishing combination of application requirements. This is impelled by ensuring a suitable arrangem...