Mechanical Engineering
Mostrando 37-48 de 249 artigos, teses e dissertações.
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37. A Review on Aerodynamics of Non-Flapping Bird Wings
ABSTRACT Birds are known for their agility, manoeuvrability, and flexibility during flight. These features allow their ability to fly under a large range of flight conditions. Bio flyers and bio aerodynamic/fluid surfaces have inspired many to perform experiments and simulations as well as to relate their results to engineering applications. Wings specifical
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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38. Structural and Thermo-mechanical Evaluation of Two Engineering Thermoplastic Polymers in Contact with Ethanol Fuel from Sugarcane
Special polymers have been used in the manufacture of storage structures and pipelines avoiding corrosive processes during ethanol fuel transport/storage. Therefore, this work investigated comparatively the effects of the ethanol on the physical-mechanical properties of poly (ether ether ketone) (PEEK) and polyamide 11 (PA-11) based on ageing tests. The WAXD
Mat. Res.. Publicado em: 19/02/2016
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39. Evaluation of the Diameter Influence on the Tensile Strength of Pineapple Leaf Fibers (PALF) by Weibull Method
The fiber extracted from pineapple leaf (PALF) displays relevant mechanical properties that are motivating investigations for possible engineering application as polymer composite reinforcement. As any natural lignocellulosic fiber, the PALF presents non-uniform dimensions and heterogeneous properties with a significant dispersion of values. In fact, a marke
Mat. Res.. Publicado em: 04/12/2015
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40. Development and Applications of Highly Functional Al-based Materials by Use of Metastable Phases
This paper reviews the features of alloy components, structure and mechanical properties, physical and chemical properties of metastable Al-based alloys developed by use of various liquid or vapor quenching-induced phases such as amorphous, quasicrystalline, nanocrystalline, nanocomposite, supersaturated solid solution and structure gradient phases. As advan
Mat. Res.. Publicado em: 04/12/2015
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41. Photoacoustic Thermal Characterization of Banana Fibers
Natural fibers are attracting the interest of engineering sectors owing to specific advantages such as lightweight and lower cost as well as an inherent condition of being renewable, biodegradable, recyclable and environmentally correct with respect to CO2 emission. In addition, several natural fibers present mechanical and thermal properties appropriate for
Mat. Res.. Publicado em: 2015-12
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42. Flexural Behavior of Epoxy Matrix Composites Reinforced with Malva Fiber
Polymer composites reinforced with natural fibers have been increasingly investigated and applied as engineering materials owing to their economical, technical, societal and environmental advantages. The malva fiber, particularly an important resource in the Amazon region in Brazil, only recently begin to be investigated as possible composite reinforcement f
Mat. Res.. Publicado em: 17/11/2015
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43. Studies on the Thermal, Mechanical and Chemical Resistance Properties of Natural Resource Derived Polymers
Cardanol-based epoxidized resole resins (ERCF) were synthesized by reacting resole type phenolic resin (RCF) and epichlorohydrin in basic medium, at 120 °C. Resole type phenolic resins were synthesized by reacting cardanol (C) and formaldehyde (F) in the presence of sodium hydroxide, as catalyst, at five different temperatures ranging between 60-80 °C with
Mat. Res.. Publicado em: 03/11/2015
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44. Fique Fiber Tensile Elastic Modulus Dependence with Diameter Using the Weibull Statistical Analysis
Fique is a plant native of Colombia with fibers extracted from its leaves presenting relevant physical characteristics and mechanical properties for possible engineering applications, such as reinforcement of polymer composites. The main physico-mechanical properties of the fique fiber have already been investigated for both untreated and mechanically treate
Mat. Res.. Publicado em: 23/10/2015
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45. Mechanical Properties Evaluation of the Carbon Fibre Reinforced Aluminium Sandwich Composites
AbstractSandwich laminates play an important role in industries and they are used in varieties of engineering applications. In the present investigation, carbon fiber reinforced aluminium sandwich laminates are fabricated and their properties such as tensile, flexural and impact are studied for their use in structural applications. All the tests are carried
Mat. Res.. Publicado em: 2015-10
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46. Three-dimensional reconstruction of compacted graphite in vermicular cast iron by manual serial sectioning
Microstructural characterization is an important tool to optimize the properties of engineering materials. Metallography is a common technique, but it provides two-dimensional images from (sometimes complex) three-dimensional microstructures. Three-dimensional reconstruction of microstructures provides more precise informa tion on the morphologies of the mat
Rem: Rev. Esc. Minas. Publicado em: 2015-09
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47. BIOMATERIAIS: TIPOS, APLICAÇÕES E MERCADO
AbstractThe types of compounds used in the production of biomaterials, namely metals, ceramics, synthetic and natural polymers, as well as composite materials, are discussed in the present work, together with details of their application and evolution from biocompatible to bioactive, biodegradable, and biomimetic clinical products. The chemical structure, th
Quím. Nova. Publicado em: 2015-08
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48. Finite element model based on refined plate theories for laminated glass units
AbstractLaminated glass units exhibit complex response as a result of different mechanical behavior and properties of glass and polymer foil. We aim to develop a finite element model for elastic laminated glass plates based on the refined plate theory by Mau. For a geometrically nonlinear description of the behavior of units, each layer behaves according to
Lat. Am. j. solids struct.. Publicado em: 2015-06