Assessment of fiber-reinforcement and foam-filling in the directional energy absorption performance of a 3D printed accordion cellular structure

Farrokhabadi, Amin; Ashrafian, Mohammad Mahdi; Behravesh, Amir Hossein; Hedayati, Seyyed Kaveh

doi:10.1016/j.compstruct.2022.115945

Cited by 18 publications

(5 citation statements)

References 40 publications

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“…This indicates that the sandwich samples possessed a pseudo-plastic fracture characteristic that was not present in the geopolymer material, i.e., such sandwich structures ensure that the component does not collapse when impacted by an external force [53,54]. A similar behavior is also typical of cellular structures (e.g., foams) composed of brittle materials [55,56]. Thus, the occurrence of this ductile fracture behavior may enable the parts to be considered for applications, where the brittle fracture behavior of the geopolymer is not suitable.…”

Section: Comparison Of Mechanical Properties and Fracture Behavior Of...mentioning

confidence: 93%

3D-printed Lunar regolith simulant-based geopolymer composites with bio-inspired sandwich architectures

Ma¹,

Jiang²,

Fu³

et al. 2023

Journal of Advanced Ceramics

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Over time, natural materials have evolved to be lightweight, high-strength, tough, and damage-tolerant due to their unique biological structures. Therefore, combining biological inspiration and structural design would provide traditional materials with a broader range of performance and applications. Here, the application of an ink-based three-dimensional (3D) printing strategy to the structural design of a Lunar regolith simulant-based geopolymer (HIT-LRS-1 GP) was first reported, and high-precision carbon fiber/quartz sand-reinforced biomimetic patterns inspired by the cellular sandwich structure of plant stems were fabricated. This study demonstrated how different cellular sandwich structures can balance the structure-property relationship and how to achieve unprecedented damage tolerance for a geopolymer composite. The results presented that components based on these biomimetic architectures exhibited stable non-catastrophic fracture characteristics regardless of the compression direction, and each structure possessed effective damage tolerance and anisotropy of mechanical properties. The results showed that the compressive strengths of honeycomb sandwich patterns, triangular sandwich patterns, wave sandwich patterns, and rectangular sandwich patterns in the Y-axis (Z-axis) direction were 15.

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Section: Comparison Of Mechanical Properties and Fracture Behavior Of...mentioning

confidence: 93%

3D-printed Lunar regolith simulant-based geopolymer composites with bio-inspired sandwich architectures

Ma¹,

Jiang²,

Fu³

et al. 2023

Journal of Advanced Ceramics

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“…Electrospinning [31,87,88] and 3D printing technology [89][90][91][92][93] are relatively novel methods for preparing polymer porous materials. Electrospinning is the process of spinning with polymer solution under high electrostatic pressure.…”

Section: Other Methodsmentioning

confidence: 99%

Review on Cell Structure Regulation and Performances Improvement of Porous Poly(Lactic Acid)

Hou

Pan

Zhou

et al. 2023

Macromol. Rapid Commun.

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Recent advances in the cell structure regulation and performances improvement of porous poly(lactic acid) materials (PPMs) are systematically reviewed in this feature article. First, the typical processing methods, including template method, non‐solvent induced phase separation, freeze–drying, and supercritical CO2 foaming, of PPMs are introduced emphatically. Their various cell morphologies by different processing methods are summarized: finger–like, honeycomb–like, fiber–like, through cell, open cell, closed cell, ball–like, and flower–like. Meanwhile, the transformation among different cell morphologies as well as the changes in cell size and cell density, having impact on the performances, is described. Second, the influence of stereo–complex crystals on the cell structure of PPMs is emphatically reviewed. Furthermore, the relationships between cell structure and properties that includes mechanical properties, thermal stability, heat insulation, and hydrophobicity, are elaborated. Eventually, the issues of PPMs worthy of further study are discussed.

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“…The foam filled periodic hybrid structures showed stable deformation and compression performance [22]. The foam filled structures not only showed better specific energy absorbance, but also showed lower density [23]. The rigid PU foams showed higher elastic limits, energy absorbance, and flexural modulus with improved compression properties [24].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Compressive Characteristics and Optimization of Design Parameters of a Novel Functionally Graded Cell Structure

Ganapathy,

Sakthivel

2024

Funct. Compos. Struct.

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Novel structural conceptualizations frequently incorporate inventive ideas, materials, or construction techniques. This study presents a unique design inspired by the traditional practice of sikku rangoli, a cultural tradition prevalent in the southern region of India, particularly in Tamil Nadu. Because it was novel, it was necessary to optimize the fundamental design for maximal outputs. In contrast to honeycomb structures, intercellular interactions are believed to contribute to the overall strengthening of the structure. By eliminating sharp corners from the structure, stress accumulation is prevented, resulting in improved stress distribution. Therefore, the design aspects that were deemed significant were taken into consideration and through the implementation of experimental design, an optimum design was determined. Utilizing the optimal base design as a foundation, the structure underwent several printing processes using diverse materials and incorporated multiple fillers. Furthermore, the structure was subjected to modifications employing the functional grading design concept. The study employed the functional grading design concept to examine the variations in load bearing capability, load distribution, and failure mode. The findings indicate that the compression strength of the composite structure was mostly influenced by the wall thickness. The combination of a carbon fiber reinforced base material with silicone rubber as filler, together with a functional graded cell structure featuring top and bottom densification, exhibited the highest compression strength compared to all other combinations. In order to investigate the accurate impact of the FG structures, every cell design was printed using PLA-CF, subjected to testing devoid of any additives, and the output parameters were computed. The results indicated that the center densified cell design exhibited significant values for specific energy absorption, relative density, and compressive strength (52.63 MPa, 0.652, and 2.95 kJ/kg, respectively). The design of the base cell exhibited the greatest crushing force efficacy of 0.982.

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Assessment of fiber-reinforcement and foam-filling in the directional energy absorption performance of a 3D printed accordion cellular structure

Cited by 18 publications

References 40 publications

3D-printed Lunar regolith simulant-based geopolymer composites with bio-inspired sandwich architectures

3D-printed Lunar regolith simulant-based geopolymer composites with bio-inspired sandwich architectures

Review on Cell Structure Regulation and Performances Improvement of Porous Poly(Lactic Acid)

Investigation on the Compressive Characteristics and Optimization of Design Parameters of a Novel Functionally Graded Cell Structure

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