Shape Memory Materials

Arun, D I; Chakravarthy, P.; Arockiakumar, R; Santhosh, B

doi:10.1201/9781351119948-2

Cited by 5 publications

(10 citation statements)

References 1 publication

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“…Austenite SMA generally yields greater output force, but maximum strain is only about 8% (Yang et al, 2020). SMP can hold far larger strain in excess of 100% (up to 800% (Arun et al, 2018)) but the low polymeric stiffness ends up with lesser recovery force. Meanwhile, another critical issue is motional reversibility, usually referred to as "two-way memory".…”

Section: Cross-linksmentioning

confidence: 99%

“…Indeed, the current fabrication techniques, including 4D printing, generally do not support reversibility (Lee et al, 2017). Two-way/multiway SME (TWSME/MWSME) could be obtained through exclusive processing, but it often ends up with much lesser useful force conveyed (Arun et al, 2018;Lederl'e, 2002).…”

Section: Cross-linksmentioning

confidence: 99%

“…To concern these issues, SMM hybrids or shape memory composites (SMCs) synthesizing several materials have been attempted, satisfying field-specific requirements (Arun et al, 2018;Matsui et al, 2017b;Meng et al, 2020). Examples: SiC, Reinforcement, In civil engineering, concrete Beam with SMA wires are actively studied.…”

Section: Cross-linksmentioning

confidence: 99%

“…Shape memory polymer matrix (SMP) has been extensively implemented spanning various areas such as biomedical devices, automotive parts, soft robots or aircraft/aerospace components (Matsui et al, 2017a;Arun et al, 2018;Lendlein et al, 2019). However, despite a few pioneering work and interests in architecture (Li et al, 2018;Vazquez et al, 2019;Sommer et al, 2010;Clifford et al, 2017), SMP has been explored only schematically and on lab scales, and we suffer from lack of scientific evidence of the SMP functionality and methodology in the domain of building practice.…”

Section: Introductionmentioning

confidence: 99%

“…1.2 Characteristics of shape memory materials and composites Shape memory materials (SMMs), also termed "smart" materials, are a special class of stimuliresponsive materials or combinations thereof in which exhibit the property of "trained" shape change or shape memory effect (SME) (Arun et al, 2018;Sun et al, 2017). They retrieve the original shape upon exposure to specific conditions of environmental stimuli such as light, temperature, moisture, etc.…”

Section: Introductionmentioning

confidence: 99%

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4D-printed parametric façade in architecture: prototyping a self-shaping skin using programmable two-way shape memory composite (TWSMC)

2021

ECAM

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PurposeThis study aims to present an architectural application of 4D-printed climate-adaptive kinetic architecture and parametric façade design.Design/methodology/approachThis work investigates experimental prototyping of a reversibly self-shaping façade, by integrating the parametric design approach, smart material and 4D-printing techniques. Thermo-responsive building skin modules of two-way shape memory composite (TWSMC) was designed and fabricated, combining the shape memory alloy fibers (SMFs) and 3D-printed shape memory polymer matrices (SMPMs). For geometry design, deformation of the TWSMC was simulated with a dimension-reduced mathematical model, and an optimal arrangement of three different types of TWSMC modules were designed and fabricated into a physical scale model.FindingsModel-based experiments show robust workability and formal reversibility of the developed façade. Potential utility of this module for adaptive building design and construction is discussed based on the results. Findings help better understand the shape memory phenomena and presented design-inclusive technology will benefit architectural communities of smart climate-adaptive building.Originality/valueTwo-way reversibility of 4D-printed composites is a topic of active research in material science but has not been clearly addressed in the practical context of architectural design, due to technical barriers. This research is the first architectural presentation of the whole design procedure, simulation and fabrication of the 4D-printed and parametrically movable façade.

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Section: Cross-linksmentioning

confidence: 99%

Section: Cross-linksmentioning

confidence: 99%

Section: Cross-linksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

4D-printed parametric façade in architecture: prototyping a self-shaping skin using programmable two-way shape memory composite (TWSMC)

2021

ECAM

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Metals

Fahlman¹

2018

Materials Chemistry

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High glass-transition polyurethane-carbon black electro-active shape memory nanocomposite for aerospace systems

Arun

Kumar

et al. 2019

Materials Science and Technology

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Carbon black conductive filler material, 2–40% by weight was added to specially designed polyurethane polymer to prepare shape memory polymer nanocomposites. The synthesised polyurethane (PU) has exhibited a high glass transition temperature of 85°C compared to the reported values in published literatures. The polymer was characterised for its chemical, electrical, thermal and mechanical properties. The stiffness, load-bearing capacity and electrical conductivity were observed to improve with increased carbon loading. It was found to be capable of responding to thermal as well as electrical stimuli. The shape recovery efficiency was found to be 94% for thermal and 98% for electrical stimuli which is among the highest for PU reported so far.

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Shape Memory Materials

Cited by 5 publications

References 1 publication

4D-printed parametric façade in architecture: prototyping a self-shaping skin using programmable two-way shape memory composite (TWSMC)

4D-printed parametric façade in architecture: prototyping a self-shaping skin using programmable two-way shape memory composite (TWSMC)

Metals

High glass-transition polyurethane-carbon black electro-active shape memory nanocomposite for aerospace systems

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