Servohydraulic Control
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Biomechanical Test after Hip Cannulated Screw Removal (in vitro Analysis)
Resumo Objetivo Avaliar, pormeio de ensaio biomecânico, a resistência e a energia necessária para ocorrência de fratura do fêmur proximal em osso sintético após retirada de parafusos canulados em forma de triângulo invertido e comparar os resultados obtidos com técnica de reforço utilizando polimetilmetacrilato (PMMA). Métodos Foramutilizados
Rev. bras. ortop.. Publicado em: 07/10/2019
-
2. Montagem e avaliação de uma máquina de solda por fricção
Um processo alternativo à solda por arco para aplicação em materiais de difícil junção ou em ambientes submersos é a solda por fricção. Neste trabalho foi desenvolvido um equipamento de solda por fricção para pesquisas e determinação de parâmetros ótimos de soldagem em diferentes meios. Para verificar o desempenho do equipamento foi utilizado
Publicado em: 2011
-
3. Fracture strength of flared bovine roots restored with different intraradicular posts
OBJECTIVE: The aim of this study was to evaluate the fracture strength and failure mode of flared bovine roots restored with different intraradicular posts. MATERIAL AND METHODS: Fifty bovine incisors with similar dimensions were selected and their roots were flared until 1.0 mm of dentin wall remained. Next, the roots were allocated into five groups (n=10):
Journal of Applied Oral Science. Publicado em: 2009-12
-
4. Estudo do desalinhamento das fibras nas propriedades mecânicas de compósitos estruturais de pás eólicas / Study of fiber misalignment effects on the mechanical properties of wind blades structural composites
This work presents the study of waviness influence on the mechanical properties of wind blades structural components fabricated by vacuum infusion. For this purpose, out-of-plane waviness, which is a common manufacturing defect, was induced on glass and carbon reinforced plastics (GRP and CRP) and compared with control laminates without waviness (wave-free c
Publicado em: 2009
-
5. Estudo do desalinhamento das fibras nas propriedades mecânicas de compósitos estruturais de pás eólicas / Study of fiber misalignment effects on the mechanical properties of wind blades structural composites
This work presents the study of waviness influence on the mechanical properties of wind blades structural components fabricated by vacuum infusion. For this purpose, out-of-plane waviness, which is a common manufacturing defect, was induced on glass and carbon reinforced plastics (GRP and CRP) and compared with control laminates without waviness (wave-free c
Publicado em: 2009
-
6. CONTROLE POR APRENDIZADO DE SISTEMAS SERVO: HIDRÁULICOS DE ALTA FREQÜÊNCIA / LEARNING CONTROL OF HIGH FREQUENCY SERVO: HYDRAULIC SYSTEMS
Hydraulic systems are used where relatively high forces and torques are required, or when high response speeds are necessary. They are used in industrial systems, robotics, movement simulators, automated plants, ore exploration, presses, and especially in fatigue testing systems. Fatigue tests are usually performed on servo-hydraulic systems, in order to pre
Publicado em: 2008
-
7. Sistema de baixo custo para nucleação de pré-trincas por fadiga em corpos de prova de tenacidade à fratura
Fracture toughness testing becomes a very important parameter for mechanical design and maintenance of parts and structures. This work presents the design and construction of a machine device to perform the pre-crack nucleation on SE(B) specimens for fracture toughness testing. Employing this device, it is possible to test materials for K Ic, CTOD and J Ic i
Materials Research. Publicado em: 2001-07
-
8. Relaxação de tensões em metais
Any metal or alloy which is submitted to a stress level, corresponding to a given strain, will gradually relax if this strain is maintained constant. This effect which is named Stress Relaxation offers means to investigate the dislocation dynamics of metals. One objective of the present investigation was to study the machine s contribution on the stress rela
Publicado em: 1981