Thermodynamics of Nitinol

McNichols, J. L.; Cory, J. S.

doi:10.1063/1.338151

Cited by 52 publications

(12 citation statements)

References 16 publications

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“…8.2(f, i)). The use of nitinol spheres, in a phase where nitinol shows strong hysteresis or energy absorption [117], in the middle part of such TCs, can dramatically enhance shock absorption.…”

Section: Simple Tapered Chainmentioning

confidence: 99%

Solitary waves in the granular chain

et al. 2008

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Section: Simple Tapered Chainmentioning

confidence: 99%

Solitary waves in the granular chain

et al. 2008

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“…An example is presented in Fig. 6, which shows a series of internal cycles with a common unloading point (3,5,7,9) and different amplitudes of the unloading excursion. The collection of internal cycles displays equivalent properties to the collection presented in Fig.…”

Section: Ill Hysteresis Behavior In Partial Cyclingmentioning

confidence: 99%

Preisach modeling of hysteresis for a pseudoelastic Cu-Zn-Al single crystal

Ortı́n

1992

Journal of Applied Physics

127

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Stress-strain trajectories associated with pseudoelastic behavior of a Cu-19.4 Zn-13.1 Al (at. %) single crystal at room temperature have been determined experimentally. For a constant cross-head speed the trajectories and the associated hysteresis behavior are perfectly reproducible; the trajectories exhibit memory properties, dependent only on the values of return points, where transformation direction is reverted. An adapted version of the Preisach model for hysteresis has been implemented to predict the observed trajectories, using a'set of experimental first-order reversal curves as input data. Explicit formulas have been derived giving all trajectories in terms of this data set, with no adjustable parameters. Comparison between experimental and calculated trajectories shows a much better agreement for descending than for ascending paths, an indication of a dissymmetry between the dissipation mechanisms operative in forward and reverse directions of martensitic transformation.

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“…The phase transformations are a result of shear lattice distortions (twinning) rather than long range diffusion of atoms [1,19]. The austenitic phase in SMA has a ordered B2 cubic crystal structure as compared to the martensitic phase which has either tetragonal, orthorhombic or monoclinic structures [20]. Due to its non-cubic structure, the martensitic phase (B19 crystal structure) can have different orientations (variants) 4 [1,19]:…”

Section: Shape Memory Alloys: Temperature Induced Phase Transformationsmentioning

confidence: 99%

Introduction to Shape Memory Alloys

Rao

Srinivasa

Reddy

2015

Design of Shape Memory Alloy (SMA) Actuators

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Classical materials like metals and alloys have played a significant role as structural materials for many centuries [1]. Engineers have designed components and selected alloys by employing the classical engineering approach of understanding the macroscopic properties of the material and selecting the appropriate one to match the desired functionality based on the application [2]. With advancements in material science and with increasing space and logistical limitations, scientists have been constantly developing high performing materials for various applications [2]. The everlasting goal for engineers in many cases is to improve product efficiency and reduce its weight without comprising on either its cost or performance. To achieve this goal, replacing multi-component and multi-material systems with fewer multifunctional light weight, high performing materials has been an attractive alternative [2,3]. Such advanced materials have played a leading role in the development of many engineering innovations and achievements like the Airbus A380, Boeing 787 Dreamliner, reliable fuel efficient cars, superior drug delivery devices, and so on, to list a few. The ingenious commercial products across various engineering disciplines are meeting all requirements by encompassing many of the latest technologies and meeting the challenges of tomorrow's needs.In pursuit of this, material scientists over the last few decades have focused on the possibility of tailoring the microstructure of the material to generate the required functionality for different applications [2,4]. Such an effort has resulted in an entire new area of active or multifunctional materials that posses more than one desirable property [5,6]. With the introduction of such materials, researchers are now focusing on how the combined microstructural changes of such materials are able to perform multiple functions. The integration of multiple functions like actuation, sensing, and control into a single structure using one or more material constituent is seen as a possibility [2,3]. Mamoda in her recent review of future materials discusses some application ideas with such materials like: a smart solar panel that can change its orientation automatically during the day depending on sun's position; a smart shock

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Thermodynamics of Nitinol

Cited by 52 publications

References 16 publications

Solitary waves in the granular chain

Solitary waves in the granular chain

Preisach modeling of hysteresis for a pseudoelastic Cu-Zn-Al single crystal

Introduction to Shape Memory Alloys

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