Historical background and future perspectives

Concilio, Antonio; Lecce, Leonardo

doi:10.1016/b978-0-12-819264-1.00001-7

Cited by 2 publications

(2 citation statements)

References 112 publications

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“…[ 2 ] This temporal aspect enables printed structures to undergo controlled and programmed shape changes, [ 3 ] self‐assembly, [ 4 ] and adaptive behaviors [ 5 ] in response to external stimuli. As a result, 4D printing presents a profound shift in material engineering and design, offering an emerging frontier of smart and responsive materials such as shape memory materials (SMMs) [ 6 ] that hold immense promise across diverse disciplines, from engineering [ 7,8 ] and medicine [ 9 ] to architecture [ 10 ] and robotics. [ 11,12 ]…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties, Energy Absorption, and Shape Memory Behavior of 3D Printed PLA‐MXene Nanocomposites and Gyroid Lattices

Srinivas,

Jacob,

Shebeeb C

et al. 2024

Adv Eng Mater

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This work investigates the influence of MXene content on the mechanical and functional response of PLA‐MXene composites fabricated additively using fused deposition modeling. The mechanical, thermal, and microstructural properties of the fabricated samples are investigated considering dense and architected triply periodic minimal surfaces (TPMS) gyroid specimens. Overall, the addition of 0.25–0.5 wt% MXene is found to improve the stiffness, fracture strength, and energy absorption capabilities of the PLA. However, further increasing MXene content to 1 wt% becomes detrimental to the general performance of the composite. In terms of functional behavior, the PLA‐MXene blends developed in this work are shown to display a shape memory effect, wherein deformed samples are shown to recover their shape when submerged in hot water. The reported results provide insights into the use of PLA‐MXene in engineering applications, namely those involving impact shielding or energy absorption.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties, Energy Absorption, and Shape Memory Behavior of 3D Printed PLA‐MXene Nanocomposites and Gyroid Lattices

Srinivas,

Jacob,

Shebeeb C

et al. 2024

Adv Eng Mater

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“…While shape memory effects have been utilized in spacecrafts in the past, these applications predominantly involved shape memory alloys (SMAs). SMAs are a class of metals known for their shape memory properties (see [5] and [6] p. 609 ff). In this context, shape memory actuated systems, including hold-down and release mechanisms (HDRMs) and actuators for release and deployment, have been developed using SMAs ([6] pp.…”

Section: Introductionmentioning

confidence: 99%

Development and Assessment of a 4D Printing Technique for Space Applications

Richter,

Völlmecke

2023

Applied Sciences

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Shape memory polymers (SMPs), a class of polymers exhibiting the unique ability to restore deformation induced during the programming process in response to external stimuli, have garnered significant attention. In this study, our objectives were two-fold: to develop an efficient device for programming SMP hinges crafted from polyetheretherketon (PEEK) and to optimize their performance for potential utilization in space applications. Two versions of the programming device were constructed and compared. Through three systematic experiments, we identified optimal programming and recovery conditions for the hinges, revealing the best shape memory effects (SMEs) at a programming temperature of 250 °C. Remarkably, the hinges were able to recover the previously induced deformation up to 100%, maintaining functionality down to a lower temperature limit of 150 °C. Notably, these hinges demonstrated a wide operational range of over 180°, rendering them promising for space applications, as extensively discussed within the manuscript. However, challenges arise due to the high recovery temperature of 150 °C, presenting obstacles in achieving optimal functionality in the demanding conditions of a space environment.

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Historical background and future perspectives

Cited by 2 publications

References 112 publications

Mechanical Properties, Energy Absorption, and Shape Memory Behavior of 3D Printed PLA‐MXene Nanocomposites and Gyroid Lattices

Mechanical Properties, Energy Absorption, and Shape Memory Behavior of 3D Printed PLA‐MXene Nanocomposites and Gyroid Lattices

Development and Assessment of a 4D Printing Technique for Space Applications

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