7 documents found, page 1 of 1
Ergodesign: Visual analysis of entry (ingress) and exit (egress) car behaviour ...
F. Fernandes, Susana C.; Esteves, J. L.; Simões, Ricardo; Sampaio, João NunesThe natural aging process induces physical limitations, intending with this article analyze the behavior of senior and pre-senior drivers during ingress and egress of cars. The goal is to identify the parts of the interior of the car that should be changed or adjusted to the physical condition of these drivers to facilitate the executive function of getting in andout. The methodological process is based on visu...
Design do cinto de segurança automóvel: minimização do risco de ferimentos grav...
Fernandes, Susana C. F.; Esteves, J. L.; Sampaio, João Nunes; Simões, RicardoO uso adequado do cinto de segurança automóvel é um meio efetivo de prevenção de ferimentos graves ou fatais em caso de acidente. Todavia, os ferimentos provocados pelo próprio cinto de segurança podem, por si só, resultar em lesões graves para o utilizador. Este artigo analisa como minimizar o risco de ferimentos graves e fatais nos indivíduos seniores resultantes do cinto de segurança em colisões, com o objet...
The use of cellulosic fibers wastes to increase the mechanical behaviour of bio...
Loureiro, N. C.; Esteves, J. L.; Viana, J. C.The best way to obtain cellulosic fibers is to use the pulp wastes from the paper plants. The pre-processing of the fibers is a very complex and chemically heavy set of operations. At the end, a small part of the fibers will be rejected and removed from the production system. Actually these rejected fibers are being incinerated at the furnace that dries the raw-wood. This means that after a set of chemical trea...
Mechanical characterization of polyhydroxyalkanoate and poly(lactic acid) blends
Loureiro, N. C.; Esteves, J. L.; Viana, J. C.; Ghosh, SatyabrataIn this work, the mechanical behavior of polyhyroxyalkanoate (PHA)/poly(lactic acid) (PLA) blends is investigated in a wide range of compositions. The mechanical properties can be optimized by varying the PHA contents of the blend. The flexural and tensile properties were estimated by different models: the rule of mixtures, Kerner-Uemura-Takayanagi (KUT) model, Nicolai-Narkis model and Bela-Pukansky model. This...
Development of polyhydroxyalkanoates/poly(lactic acid) composites reinforced wi...
Loureiro, N. C.; Esteves, J. L.; Viana, J. C.; Ghosh, SatyabrataIn this work, the mechanical behavior of [30:70] (wf) PHA/PLA blend matrix reinforced with cellulosic fibers is investigated in the range of fiber incorporation of 10%, 20% and 30% wf.The mechanical properties of the composites can be optimized through the variation of the fiber content on the composite. It is possible to predict the tensile properties recurring to modified Halpin-Tsai equation, Ishai and Cohen...
Mechanical characterization of polyhydroxyalkanoate and poly (lactic acid) blends
Loureiro, N. C.; Esteves, J. L.; Viana, J. C.; Ghosh, S.In this work, the mechanical behavior of polyhyroxyalkanoate (PHA)/poly(lactic acid) (PLA) blends is investigated in a wide range of compositions. The mechanical properties can be optimized by varying the PHA contents of the blend. The flexural and tensile properties were estimated by different models: the rule of mixtures, Kerner–Uemura–Takayanagi (KUT) model, Nicolai–Narkis model and Béla–Pukánsky model. This...
Development and characterization of renewable source composites to replace petr...
Loureiro, N. C.; Esteves, J. L.; Viana, J. C.; Ghosh, SatyabrataThe Mechanical properties of PHA/PLA blends can be optimized trough the variation of the PHA contents on the blend. It's possible to predict the flexural and tensile properties recurring to Rule of Mixtures, Kerner-Uemura-Takayanagi, Nicolai-Narkis and Béla-Pukánsky models. All of them will validate the experimental obtain values and they anticipate a good adhesion between both phases. Nevertheless, for low lev...