Shape memory alloy actuator design: CASMART collaborative best practices and case studies

Benafan, Othmane; Brown, Jeffrey R.; Calkins, Frederick T.; Kumar, Pradeep; Stebner, Aaron P.; Turner, Travis L.; Vaidyanathan, R.; Webster, John R. P.; Young, Marcus L.

doi:10.1007/s10999-013-9227-9

Cited by 86 publications

(45 citation statements)

References 174 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Through this research, Ni-Ti-based shape memory alloys (SMAs) have now become an important technological material for a wide array of applications [3,4], i.e., specifically medical devices [5], actuators [6], etc. Despite this eclectic and ever-expanding list of applications, there exists more opportunity to enlarge the realm of potential uses by increasing the temperatures at which the characteristic phase transformation occurs, most notably in the aerospace industry [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that binary Ni-Ti can exhibit maximum TTs of approximately 115 • C [2,6], specifically the austenitic finish (A f ), but this can readily be increased by adding ternary additions such as Au, Pt, Pd, Hf or Zr to create high temperature SMAs (HTSMAs); however, with the exception of Hf and Zr, these additions increase production cost greatly, making them economically impractical for almost all applications, especially in the private sector where profit is the main concern. Following this logic, there still exists a need to create viable cost-effective HTSMAs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

Carl

Smith

Doren³

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The effect of Ni-content on phase transformation behavior of NiTi-20 at. % Zr high temperature shape memory alloy (HTSMA) is investigated over a small composition range, i.e., 49.8, 50.0 and 50.2 at. % Ni, by differential scanning calorimetry (DSC), high-energy synchrotron radiation X-ray diffraction (SR-XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). All samples show a monoclinic B19 martensitic structure at room temperature. It is shown that even with these small variations in Ni-content, the alloy shows vastly different transformation temperatures and responds in a drastically different manner to aging treatments at 550 and 600 • C. Lastly, a discussion on H-phase composition with respect to bulk composition is presented.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

Carl

Smith

Doren³

et al. 2017

Metals

View full text Add to dashboard Cite

show abstract

“…An extensive review and analysis of SMA actuator design has been undertaken and it was found that there isn't any obvious single technique or method that a designer can employ in the design process from concept to product. It was discovered that in the development of a system actuated by SMAs, each application has its own challenges which requires specific emphasis and priority for each engineering feature involved (Benafan et al 2014).…”

Section: Shape Memory Alloy Actuatormentioning

confidence: 99%

Active control of strain in a composite plate using shape memory alloy actuators

Abdullah

Majid

Romli

et al. 2014

Int J Mech Mater Des

View full text Add to dashboard Cite

The present study aims to design an experimental test bench to analyze and control a smart structure system composed of a woven fiberglass laminate plate with shape memory alloy (SMA) actuators instilled on the surface. The aim of this design is to accurately augment the strain of the composite plate. Finite element analysis was employed to model the composite structure and determine the placement of the SMA actuators in order to produce the desired structural response efficiently with minimum power consumption. Due to the nonlinear behavior of the SMA actuator, it will be critical to incorporate a feedback control system that is able to accurately morph the structure by changing the strain of the composite structure. A Proportional-Integral-Derivative (PID) controller was designed to improve its tracking performance. Simulation on the control system showed that the PID controller produced acceptable response and managed to reduce steady state error for different types of input. The PID controller was then implemented in the experimental setup to control the smart composite plate. Results from the experiment illustrates that the smart structure system that has been designed performed effectively and the strain value of the composite structure can be controlled accurately.

show abstract

“…NITI shape memory alloys (SMAs) have been extensively applied in civil, [1][2][3] medical, [4][5][6][7][8] and aerospace [9][10][11] devices for their unique shape memory effect, pseudoelasticity, bio-compatibility, and corrosion resistance. [12][13][14][15][16][17][18] The characteristic transformation temperatures for the austenite-to-martensite phase transformation as well as the mechanical response can be modified to meet application requirements through (i) thermo-mechanical processing, [19][20][21] (ii) slight variation from the equi-atomic NiTi chemical composition, [22,23] or (iii) addition of alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dynamic Compression on Phase Transformation of Martensitic NiTi Shape Memory Alloys

Qiu

Young

Nie

2015

Metall Mater Trans A

View full text Add to dashboard Cite

Shape memory alloys (SMAs) exhibit high damping capacity in both austenitic and martensitic phases, due to either a stress-induced martensite phase transformation or a stress-induced martensite variant reorientation, making them ideal candidates for vibration suppression devices to protect structural components from damage due to external forces. In this study, both quasi-static and dynamic compression was conducted on a martensitic NiTi SMA using a mechanical loading frame and on a Kolsky compression bar, respectively, to examine the relationship between microstructure and phase transformation characteristics of martensitic NiTi SMAs. Both endothermic and exothermic peaks disappear completely after experiencing deformation at a strain rate of 10 3 s À1 and to a strain of about 10 pct. The phase transformation peaks reappear after the deformed specimens were annealed at 873 K (600°C) for 30 minutes. As compared to samples from quasi-static loading, where a large amount of twinning is observed with a small amount of grain distortion and fracture, samples from dynamic loading show much less twinning with a larger amount of grain distortion and fracture.

show abstract

Shape memory alloy actuator design: CASMART collaborative best practices and case studies

Cited by 86 publications

References 174 publications

Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

Active control of strain in a composite plate using shape memory alloy actuators

Influence of Dynamic Compression on Phase Transformation of Martensitic NiTi Shape Memory Alloys

Contact Info

Product

Resources

About