Shape Memory Alloy
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Efficacy and safety of a NiTi CAR 27 compression ring for end-to-end anastomosis compared with conventional staplers: A real-world analysis in Chinese colorectal cancer patients
OBJECTIVES: This study aimed to evaluate the safety and efficacy of a new nickel-titanium shape memory alloy compression anastomosis ring, NiTi CAR 27, in constructing an anastomosis for colorectal cancer resection compared with conventional staples. METHODS: In total, 234 consecutive patients diagnosed with colorectal cancer receiving sigmoidectomy and an
Clinics. Publicado em: 2016-05
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14. Free Vibration of Laminated Composite Plate with Shape Memory Alloy Fibers
Abstract In the present study, an analytical closed form solution for free vibration response of hybrid composite plate reinforced with shape memory alloy (SMA) fibers is derived. Recovery stresses generated during martensitic phase transformation are obtained based on one- dimensional Brinson's model. The mechanical properties of plate are assumed to be tem
Lat. Am. j. solids struct.. Publicado em: 2016-02
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15. Thermomechanical Analysis on Ti-Ni Shape Memory Helical Springs Under Cyclic Tensile Loads
Shape memory alloys (SMAs) present some characteristics, which make it unique material to be use in applications that require strength and shape recovery. This alloys was been used to manufacture smart actuators for mechanical industry devices and several other applications in areas as medicine, robotics, aerospace, petroleum and gas industries. However it i
Mat. Res.. Publicado em: 2015-12
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16. Construction of a Morphing Wing Rib Actuated by a NiTi Wire
ABSTRACT: The main goal of this paper is to analyze if it is feasible to employ a trained shape memory alloy wire as a linear actuator to modify the camber of a morphing wing rib. In order to achieve this purpose, a morphing rib with a compliant trailing edge was proposed, developed, and subjected to structural analyses to ensure its flexibility. After the r
J. Aerosp. Technol. Manag.. Publicado em: 2015-12
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17. Phase Formation, Thermal Stability and Mechanical Properties of a Cu-Al-Ni-Mn Shape Memory Alloy Prepared by Selective Laser Melting
Selective laser melting (SLM) is an additive manufacturing process used to produce parts with complex geometries layer by layer. This rapid solidification method allows fabricating samples in a non-equilibrium state and with refined microstructure. In this work, this method is used to fabricate 3 mm diameter rods of a Cu-based shape memory alloy. The phase f
Mat. Res.. Publicado em: 23/10/2015
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18. Changes in the properties of Cu-Al-Mn shape memory alloy due to quaternary addition of different elements
Advantages of Cu based shape memory alloy include amongst other features, high transformation temperature, low cost of production, ease in manufacturing processes and ability to vary the achieved properties through alloying additions. It has been often reported that these alloys are very sensitive to the alloying additions in terms of properties achieved and
Matéria (Rio J.). Publicado em: 2015-03
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19. Recrystallization of a Ti-45Ni-5Cu cold-worked shape memory alloy characterized by thermoelectric power and electrical properties
The recrystallization of a cold-worked shape memory alloy (SMA) without R-phase transition, i.e. the Ti-45.0Ni-5.0Cu (% at.), has been studied by thermoelectric power (TEP) technique and electrical resistivity change (Dρ) on several heat treated samples after cold working. This study was also supported by differential scanning calorimetry (DSC), transmissio
Mat. Res.. Publicado em: 01/08/2014
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20. ECAE processed NiTi shape memory alloy
The current work evaluated the microstructures and martensitic transformation temperatures of NiTi shape memory alloy (SMA) deformed by equal channel angular extrusion (ECAE). The Ti-55.27wt.%Ni alloy was processed by 1 ECAE pass at 250 °C using a die with an intersection angle of 120°. After processing, samples were annealed at 300 °C, 400 °C and 500 °
Mat. Res.. Publicado em: 25/03/2014
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21. Free vibration response of a multilayer smart hybrid composite plate with embedded SMA wires
In this paper, free vibration response of a hybrid composite plate was studied. Effects of some geometrical, physical and material parameters on response of the composite plates embedded with shape memory alloy (SMA) wires were investigated, which have not been reported in the literature thus far. Some of these parameters included important factors affecting
Lat. Am. j. solids struct.. Publicado em: 2014-03
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22. Oclusão percutânea de comunicação interatrial tipo ostium secundum com prótese memopart®
INTRODUÇÃO: Os autores relatam a experiência inicial da oclusão da comunicação interatrial ostium secundum (CIA) com a utilização da prótese Memopart® (Shanghai Shape Memory Alloy Co Ltd, Shanghai, China). MÉTODOS: Estudo prospectivo observacional, no qual uma série de pacientes portadores de defeitos com significativa repercussão hemodinâmica
Rev. Bras. Cardiol. Invasiva. Publicado em: 2013-12
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23. Hydrogen absorption study of ti-based alloys performed by melt-spinning
The hydrogen absorption and desorption of Ti53Zr27Ni20 icosahedral quasicrystal (ICQ) and Ti50Ni50 shape memory alloy (SMA) melt-spun ribbons was studied. Samples were exposed to hydrogen gas at 623 K and 4 MPa for 1000 minutes. The total capacity of hydrogen obtained for Ti53Zr27Ni20 and Ti50Ni50 was 3.2 and 2.4 wt. % respectively. The Thermal Desorption Sp
Mat. Res.. Publicado em: 02/04/2013
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24. Estudo das propriedades termomecânicas da liga cu 78,3% - al 9,8% mn 11,9% / STUDY OF THE THERMOMECHANICAL PROPERTIES OF THE ALLOY Cu78,3% - Al9,8% - Mn11,9%
The alloys Cu 78,3% - Al 9,8% - Mn 11,9 and 77.5% Cu - Al 9.8% - Mn 11,9% -% Nb 0.5 - 0.3% Ni (wt%) were prepared without the use of protective atmosphere. The first alloy was characterized using optical microscopy, scanning electron microscopy, differential scanning calorimetry and X-ray diffraction and its mechanical property was determinated by the tensil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2012