Roving
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. Vibration and Energy Dissipation of Nanocomposite Laminates for Below Ballistic Impact Loading
Abstract Composite laminates are made of glass woven roving mats of 610gsm, epoxy resin and nano clay which are subjected to projectile impact. Nano clay dispersion is varied from 1% to 5%. Impact tests are conducted in a gas gun setup with a spherical nose cylindrical projectile of diameter 9.5 mm of mass 7.6 g. The energy absorbed by the laminates when sub
Lat. Am. j. solids struct.. Publicado em: 2015-12
-
2. Melt processing of polymer biocomposites
A coupled device extruder and injection moulding were used to prepare biocomposites in order to provide a continuous and large-scale production, and overcome the fiber degradation inside the extruder. Two types of biocomposites were prepared, Sisal/poly(buthylene adipate-co-terephthlate) – PBAT and Juta/poly(lactide acid)/poly(buthylene adipate-co-terephth
Polímeros. Publicado em: 2015-04
-
3. Comportamento Termoelástico de Vigas SMAHC sob Flexão em duas Temperaturas
Neste trabalho, foi desenvolvido e caracterizado um compósito híbrido com memória de forma (SMAHC) por meio de uma análise teórico-experimental, no regime elástico, envolvendo a fabricação de vigas laminadas. A viga híbrida foi confeccionada em matriz de epóxi reforçada com fios de SMA e mantas de fibras picadas de vidro-E, com e sem bolsa de vác
Matéria (Rio J.). Publicado em: 2013-12
-
4. Modal analysis of pre and post impacted nano composite laminates
Modal analysis is carried out on pre and post impacted nano composite laminates. The laminates are prepared using 3, 5 and 8 layers of 610gsm glass woven roving mats(WRM) with epoxy resin and montmorillonite(MMT) clay content is varied from 1% to 5%. Impulse hammer technique is used to find natural frequency and damping factor of laminates. Medium velocity i
Latin American Journal of Solids and Structures. Publicado em: 2011
-
5. PROJETO E DESENVOLVIMENTO DE MÁQUINA DESTINADA PARA O CORTE DE FIOS DE FIBRA DE VIDRO (ROVING), UTILIZADO PARA A LAMINAÇÃO DE PEÇAS EM PLÁSTICO REFORÇADO (FIBERGLASS) / PROJECT FOR A FIBERGLASS ROVING CUTTER, A MACHINE USED IN THE MAKING OF REINFORCED FIBERGLASS PARTS
In this work I redesign a device used in the fiberglass sheet molding with roving. The device cuts the roving in pieces of approximately six or seven centimeters and lays them on the mold of the part to be made. Today these cutters have to be attached to the chuck of a regular handheld electric drill. The description of this task from an ergonomic standpoint
Publicado em: 2002
-
6. PHOTOELASTIC ANALYSIS OF BIRREFRINGENT AND ORTHOTROPIC COMPOSITES / ANÁLISE DE TENSÕES EM MATERIAIS CONJUGADOS BIRREFRINGENTES
Este trabalho procura estudar materiais compostos constituídos por uma matriz de resina poliéster reforçada por fibras de vidro, com propriedades de ortotropia, transparência e birrefringência, através do desenvolvimento de métodos apropriados para a sua obtenção e sua caracterização mecânica e ótica. O material foi obtido a partir de um tipo de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/10/1986
-
7. Discrimination of Time-Reversed Harmonic Complexes by Normal-Hearing and Hearing-Impaired Listeners
Normal-hearing (NH) listeners and hearing-impaired (HI) listeners detected and discriminated time-reversed harmonic complexes constructed of equal-amplitude harmonic components with fundamental frequencies (F0s) ranging from 50 to 800 Hz. Component starting phases were selected according to the positive and negative Schroeder-phase algorithms to produce wit
Springer-Verlag.
-
8. Microbiological Profiles of Four Apollo Spacecraft
Selected surfaces from the Command Module, Lunar Module (ascent and descent stages), Instrument Unit, Saturn S-4B engine, and Spacecraft Lunar Module Adapter comprised the various components of four Apollo spacecraft which were assayed quantitatively and qualitatively for microorganisms. In addition, the first Lunar Roving Vehicle was assayed. Average levels
-
9. Voltage clamp and internal perfusion of single rat heart muscle cells.
1. Single cells from adult rat ventricle were dispersed using an enzymic dissociation technique. Electrical properties were measured with either suction pipettes or conventional glass micropipettes and the results were compared. 2. Suction pipette and micropipette measurements of resting membrane potentials and action potentials were comparable. Values were
-
10. Simultaneous mapping of the tricuspid and mitral valve annuli at electrophysiological study.
BACKGROUND--Mapping of the right free wall in patients with accessory pathways is difficult compared with that of the left free wall where the coronary sinus permits stable and accurate location of the electrodes used for endocardial mapping. Furthermore, the sequential roving catheter method is less satisfactory than multiple simultaneous electrode recordin