Design of a shape memory composite(SMC) using 4D printing technology

Kang, Minkyu; Pyo, Youngjun; Jang, Jinho; Park, Yunchan; Son, Yeon-Ho; Choi, Myung Chan; Ha, Joo wan; Chang, Young‐Wook; Lee, Caroline Sunyong

doi:10.1016/j.sna.2018.08.049

Cited by 76 publications

(44 citation statements)

References 19 publications

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“…In a recent example, Cherif and co‐workers prepare a friction spun hybrid yarn containing SMAs that are integrated into plain, twill, and satin reinforcement fabrics 44. Similarly, Kang et al employs an SMA‐driven actuator bridge that interfaces with a shape memory polymer to manipulate the fabric curvature over a temperature sweep 45…”

Section: Shape Memory Alloysmentioning

confidence: 99%

“…In 3D printed devices, gripper‐like actuation was realized to lift and release objects on command. Lee and co‐workers also used FDM in order to fabricate shape memory polymer composites that combine SMAs with SMPs (Figure 18b) 45. The SMA contributes to a thermal SME due to a phase change between its martensite and austenite phases, while the SMP domains undergo a glass transition in their transition segments.…”

Section: Shape Memory Polymersmentioning

confidence: 99%

“…The SMA contributes to a thermal shape memory effect due to a phase change between martensite and austenite phases, while the SMP domains undergo a glass transition in their transition segments. Reproduced with permission 45. Copyright 2018, Elsevier.…”

Section: Shape Memory Polymersmentioning

confidence: 99%

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Materials as Machines

2020

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of responsive materials as machines is in robotics. The vision, leadership, and research of Bar-Cohen is seminal in both invigorating and focusing current-day research activities to develop responsive materials [2] and implement [3] them as lightweight, dexterous, and gentle (e.g., soft) robotic elements. In this spirit, this review exhaustively details the materials, the nature of their stimuli-response, and discusses considerations for their implementation in robotic systems and subsystems.Robotics is a well-established but growing field of research. Sustained progress in both performance and functionality continue to be realized in commercial robotic systems largely based on conventional materials and their integration with mechanisms. A recent example is the Atlas robot from Boston Dynamics [4] (Figure 1a). The incorporation of stimuli-responsive materials in robotics has largely focused on component-level demonstrations to extend the performance of a subsystem (such as a hand or gripper).Stimuli-responsive materials, spanning nearly all classes of materials and size scales, are currently subject to widespread examination in corporate, government, and academic research laboratories (Figure 1b-d). [5][6][7] In some cases, these materials have already found widespread commercial implementation in end use and are comparatively mature. The materials and fundamentals of their responses are summarized in Figure 2. Shape memory alloys (SMAs) and ceramic piezoelectric materials are distinctive in that they are hard, stimuli-responsive materials. Deformation of these materials can produce large energy densities due to their inherent stiffness. Electroactive polymers (EAPs) remain a topic of considerable interest, particularly dielectric elastomer actuators (DEAs). Engineered systems are rapidly emerging and enabling performance gains in robotics, largely based on pneumatic or fluidic (such as HASEL [8] actuators) transport processes that localize deformation to generate force or produce motion. Soft materials, such as shape memory polymers (SMPs), hydrogels, and liquid crystalline polymer networks (LCNs) and elastomers (LCEs) may offer distinctive functional performance to robotic systems in allowing local control of deformation without the need for complex interfacing with mechanisms. As will be evident, each of these materials has inherent advantages and performance tradeoffs that must be considered in functional implementations. However, responsive material systems have a common obstacle to widespread use: the performance and Machines are systems that harness input power to extend or advance function. Fundamentally, machines are based on the integration of materials with mechanisms to accomplish tasks-such as generating motion or lifting an object. An emerging research paradigm is the design, synthesis, and integration of responsive materials within or as machines. Herein, a particular focus is the integration of responsive materials to enable robotic (machine) functions such as gripping, lifting, or motility (walk...

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Section: Shape Memory Alloysmentioning

confidence: 99%

Section: Shape Memory Polymersmentioning

confidence: 99%

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Materials as Machines

2020

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“…Kang et al [ 66 ] produced and analysed a shape memory composite (SMC) which combined a shape memory alloy (SMA) with a shape memory polymer (SMP). SMA causes a shape memory effect due to the phase change between the martensite and austenite phases as consequence of the temperature change.…”

Section: Shape Memory Effect In Polymeric Compositesmentioning

confidence: 99%

Fused Filament Fabrication-4D-Printed Shape Memory Polymers: A Review

et al. 2021

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Additive manufacturing (AM) is the process through which components/structures are produced layer-by-layer. In this context, 4D printing combines 3D printing with time so that this combination results in additively manufactured components that respond to external stimuli and, consequently, change their shape/volume or modify their mechanical properties. Therefore, 4D printing uses shape-memory materials that react to external stimuli such as pH, humidity, and temperature. Among the possible materials with shape memory effect (SME), the most suitable for additive manufacturing are shape memory polymers (SMPs). However, due to their weaknesses, shape memory polymer compounds (SMPCs) prove to be an effective alternative. On the other hand, out of all the additive manufacturing techniques, the most widely used is fused filament fabrication (FFF). In this context, the present paper aims to critically review all studies related to the mechanical properties of 4D-FFF materials. The paper provides an update state of the art showing the potential of 4D-FFF printing for different engineering applications, maintaining the focus on the structural integrity of the final structure/component.

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“…Therefore, microstructures can be deformed according to the pre-designed track under specific time and activation conditions. Currently, 4D printing can create many objects that 3D printing cannot, and the color [ 19 , 20 ], volume [ 21 ], and shape [ 22 ] of these objects can change with environmental conditions and stimuli, such as water and temperature [ 14 ]. Compared to traditional manufacturing methods, 4D printing is advantageous in terms of material adaptability, which facilitates the precise configuration of material responsiveness.…”

Section: Introductionmentioning

confidence: 99%

4D Printing: A Review on Recent Progresses

et al. 2020

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Since the late 1980s, additive manufacturing (AM), commonly known as three-dimensional (3D) printing, has been gradually popularized. However, the microstructures fabricated using 3D printing is static. To overcome this challenge, four-dimensional (4D) printing which defined as fabricating a complex spontaneous structure that changes with time respond in an intended manner to external stimuli. 4D printing originates in 3D printing, but beyond 3D printing. Although 4D printing is mainly based on 3D printing and become an branch of additive manufacturing, the fabricated objects are no longer static and can be transformed into complex structures by changing the size, shape, property and functionality under external stimuli, which makes 3D printing alive. Herein, recent major progresses in 4D printing are reviewed, including AM technologies for 4D printing, stimulation method, materials and applications. In addition, the current challenges and future prospects of 4D printing were highlighted.

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Design of a shape memory composite(SMC) using 4D printing technology

Cited by 76 publications

References 19 publications

Materials as Machines

Materials as Machines

Fused Filament Fabrication-4D-Printed Shape Memory Polymers: A Review

4D Printing: A Review on Recent Progresses

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