Design of two-way reversible bending actuator based on a shape memory alloy/shape memory polymer composite

Taya, Masahito; Liang, Yuan‐Chang; Namli, Onur C.; Tamagawa, Hirohisa; Howie, Tucker

doi:10.1088/0964-1726/22/10/105003

Cited by 36 publications

(26 citation statements)

References 32 publications

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“…The development of the SMA-containing SMEP hybrids started with the investigations of laminated beams [178,208,209,210] followed by 2D (shell) [211,212] and 3D structures [213] and devices [178]. These works contributed to clarify open issues with respect of embedding, positioning, content, maximum straining, minimum bending radius, actuation capability-related properties, etc.…”

Section: Two-way Shape Memory Ep Systemsmentioning

confidence: 99%

Review of Progress in Shape Memory Epoxies and Their Composites

2017

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Shape memory polymer (SMP) is capable of memorizing one or more temporary shapes and recovering successively to the permanent shape upon various external stimuli. Beside of the above mentioned one-way variants, also two-way shape memory polymers (SMPs) and shape memory (SM) systems exist which feature a reversible shape change on the basis of "on-off switching" of the external stimulus. The preparation, properties and modelling of shape memory epoxy resins (SMEP), SMEP foams and composites have been surveyed in this exhaustive review article. The underlying mechanisms and characteristics of SM were introduced. Emphasis was put to show new strategies on how to tailor the network architecture and morphology of EPs to improve their SM performance. To produce SMEPs novel preparation techniques, such as electrospinning, ink printing, solid-state foaming, were tried. The potential of SMEPs and related systems as multifunctional materials has been underlined. Added functionality may include, among others, self-healing, sensing, actuation, porosity control, recycling. Recent developments in the modelling of SMEPs were also highlighted. Based on the recent developments some open topics were deduced which are merit of investigations in future works.

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Section: Two-way Shape Memory Ep Systemsmentioning

confidence: 99%

Review of Progress in Shape Memory Epoxies and Their Composites

2017

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“…In this case, heating creates unbalanced mechanical stresses arising from different thermal or mechanical properties or from the SME (if SMPs are used). This strategy has also allowed for the development of laminated polymers with double SMP layers exhibiting two-way SME also under stress-free condition [154][155][156]. The main disadvantages of such an approach are related to its preparation that may be sophisticated, and the limited reversible strain change (generally lower that 10%).…”

Section: Two-way Smpsmentioning

confidence: 99%

Two-Way and Multiple-Way Shape Memory Polymers for Soft Robotics: An Overview

2020

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Shape memory polymers (SMPs) are smart materials capable of changing their shapes in a predefined manner under a proper applied stimulus and have gained considerable interest in several application fields. Particularly, two-way and multiple-way SMPs offer unique opportunities to realize untethered soft robots with programmable morphology and/or properties, repeatable actuation, and advanced multi-functionalities. This review presents the recent progress of soft robots based on two-way and multiple-way thermo-responsive SMPs. All the building blocks important for the design of such robots, i.e., the base materials, manufacturing processes, working mechanisms, and modeling and simulation tools, are covered. Moreover, examples of real-world applications of soft robots and related actuators, challenges, and future directions are discussed.

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“…Through this combination, the SMCs was able to exhibit a "three-way actuation" by heating between the respective transformation temperatures of the SMAs and the glass transition of the SMP phase [422,420]. Taya and colleagues [414] have also manufactured an SMA-SMP composite and have reported a significant reversible deflection (1.3mm for a 10mm span specimen) measured via three point bending testing. Thermal management becomes an important issue in these multistable configurations.…”

Section: (D)mentioning

confidence: 99%

Review and perspectives: shape memory alloy composite systems

et al. 2015

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Following their discovery in the early 60's, there has been a continuous quest for ways to take advantage of the extraordinary properties of shape memory alloys (SMAs). These intermetallic alloys can be extremely compliant while retaining the strength of metals and can convert thermal energy to mechanical work. The unique properties of SMAs result from a reversible difussionless solid-to-solid phase transformation from austenite to martensite. The integration of SMAs into composite structures has resulted in many benefits, which include actuation, vibration control, damping, sensing, and selfhealing. However, despite substantial research in this area, a comparable adoption of SMA composites by industry has not yet been realized. This discrepancy between academic research and commercial interest is largely associated with the material complexity that includes strong thermomechanical coupling, large inelastic deformations, and variable thermoelastic properties. Nonetheless, as SMAs are becoming increasingly accepted in engineering applications, a similar trend for SMA composites is expected in aerospace, automotive, and energy conversion and storage related applications. In an effort to aid in this endeavor, a comprehensive overview of advances with regard to SMA composites and devices utilizing them is pursued in this paper. Emphasis is placed on identifying the characteristic responses and properties of these material systems as well as on comparing the various modeling methodologies for describing their response. Furthermore, the paper concludes with a discussion of future research efforts that may have the greatest impact on promoting the development of SMA composites and their implementation in multifunctional structures.

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Design of two-way reversible bending actuator based on a shape memory alloy/shape memory polymer composite

Cited by 36 publications

References 32 publications

Review of Progress in Shape Memory Epoxies and Their Composites

Review of Progress in Shape Memory Epoxies and Their Composites

Two-Way and Multiple-Way Shape Memory Polymers for Soft Robotics: An Overview

Review and perspectives: shape memory alloy composite systems

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