Shape-memory alloys (SMA)
Releasing systems for aerospace industry based upon Shape Memory Alloys: characterization of materials for actuators
... Releasing and deployment maneuvers carried out during space satellites launching are usually performed by utilizing pyrotechnics loads. However, it is considered convenient to replace this technique by others not ...
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Impact of Alloy Composition and Thermal Stabilization on Martensitic Phase Transformation Structures in CuAlMn Shape Memory Alloys
... strength shape memory alloys with an excellent damping capacity within their austenitic-martensitic phase transformation, compared to alloy systems like NiTi, CuZnAl or ...CuAlMn alloys have ...
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Shape Memory Alloys (Part II): Classification, Production and Application
... Numerous alloys show shape memory effect (NiTi-based alloys, Cu-based alloys, Fe-based alloys ...NiTi alloys have greater shape memory strain and excellent ...
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Shape Memory Alloys
... Shape memory alloys (SMAs) are metals that "remember" their original ..."change shape, stiffness, position, natural frequency, and other mechanical characteristics in response to ...
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Gas Tungsten Arc Welding of Cu-Al-Mn Shape Memory Alloys
... Cu-based shape memory alloys, the recoverable strain depends on the grain size (d) relative to the size of the specimen, for sheet thickness (t) or wire diameter (D), and increases with increasing ...
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Medical applications of shape memory alloys
... day, these applications are being developed in different fields of science and engineering. Basically, SMA present two well-defined crystallographic phases, i.e., austenite and martensite (3). Martensite is a phase that, ...
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Effect of Contact Temperature Rise During Sliding on the Wear Resistance of TiNi Shape Memory Alloys
... The high wear resistance of TiNi alloy has traditionally been attributed to its pseudoelastic nature alone but the present work indicates that the contact temperature rise due to frictional heat generated during sliding ...
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Mat. Res. vol.20 número6
... Shape memory alloys (SMA) are attracting considerable attention owing to possible applications from biomedical to ...CuAlNi alloys present signiicant advantages associated with low cost, easy ...
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Mat. Res. vol.4 número3
... Shape memory alloys (SMA’s), classified as “smart” metallic materials, are sensitive to temperature and/or stress producing a large macroscopic strain as a result of a ther- moelastic martensitic ...
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J. Aerosp. Technol. Manag. vol.7 número4
... SMA has already been used in aeronautical industry as actuator in an active serrated aerodynamic device known as a variable geometry chevron (VGC) capable of reducing noise during take-of (Jani et al. 2014). Indeed, the ...
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J. Braz. Soc. Mech. Sci. & Eng. vol.34 número especial a09v34nspe
... Machado (2007) investigated the use of shape memory alloys for vibration isolation and damping of mechanical systems. Specifically, it is treated a device composed of a mass connected to a frame ...
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Gas Tungsten Arc Welding of NiTi Shape Memory Alloy
... Shape memory alloys (SMA) are known for the capacity to recover the initial shape after being deformed, when subjected to a specific thermal cycle, called Shape Memory Effect ...
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Mat. Res. vol.15 número3
... of Shape Memory Alloys (SMA) has been observed in different systems, especially the dependence of the martensitic transformation behaviour in nanostructured ...
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Microstructural Characterization of a Laser Surface Remelted Cu-Based Shape Memory Alloy
... Cu-based shape memory alloys (SMAs) present some advantages as higher transformation temperatures, lower costs and are easier to process than traditional Ti-based SMAs but they also show some ...
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Shape Memory Alloy Actuator forBio-medical application
... of shape memory alloys (SMA) in bio-medical field based upon their material properties are discussed, and a novel SMA spring actuator design for biopsy is ...
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VIBRATION CONTROL WITH SHAPE-MEMORY ALLOYS
... The other manifestation of the thermoelastic martensitic transformation in SMAs is the so called shape-memory effect. Whereas stressed induced martensite consists of a single preferential variant according ...
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Laser Welding of Shape Memory Alloys
... these alloys can present abnormal grain grown under appropriate processing ...Cu-Al-Mn alloys a cyclic heat treatment was sufficient to promote the growth of the grain ...
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Soldag. insp. vol.17 número3
... for shape memory alloys (SMA) has become of great importance, as their functional properties namely shape memory effect (SME) and superelasticity (SE) present unique solutions for ...
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Mat. Res. vol.13 número2
... of shape memory alloys under distinct conditions such as: different temperatures tests, different strain rates, submitted to successive martensitic transformations and different crystallographic ...
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