Biomimetics and 3D printing - Opportunities for design applications

Chaturvedi, Ikshita; Jandyal, Anketa; Wazir, Ishika; Raina, Ankush; Haq, Mir Irfan Ul

doi:10.1016/j.sintl.2022.100191

Cited by 10 publications

(8 citation statements)

References 48 publications

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“…Bioinspiration refers to extracting knowledge from nature-made systems, materials, or elements to create man-made ideas inspired by them. During the last few decades, encounters with bioinspired elements have been more present in daily life, from aerodynamical train designs based on the beak of a bird [116], to more efficient building ventilation inspired by termite mounds [117] and robot movements that mimic human demonstrations [118]. In the field of structural materials, where new bioinspired materials are daily developed, the material fracture behavior is essential to understanding its deformation and yielding mechanics [119,120].…”

Section: Xfem and Bioinspired Materialsmentioning

confidence: 99%

XFEM for Composites, Biological, and Bioinspired Materials: A Review

Vellwock,

Libonati

2024

Materials

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The eXtended finite element method (XFEM) is a powerful tool for structural mechanics, assisting engineers and designers in understanding how a material architecture responds to stresses and consequently assisting the creation of mechanically improved structures. The XFEM method has unraveled the extraordinary relationships between material topology and fracture behavior in biological and engineered materials, enhancing peculiar fracture toughening mechanisms, such as crack deflection and arrest. Despite its extensive use, a detailed revision of case studies involving XFEM with a focus on the applications rather than the method of numerical modeling is in great need. In this review, XFEM is introduced and briefly compared to other computational fracture models such as the contour integral method, virtual crack closing technique, cohesive zone model, and phase-field model, highlighting the pros and cons of the methods (e.g., numerical convergence, commercial software implementation, pre-set of crack parameters, and calculation speed). The use of XFEM in material design is demonstrated and discussed, focusing on presenting the current research on composites and biological and bioinspired materials, but also briefly introducing its application to other fields. This review concludes with a discussion of the XFEM drawbacks and provides an overview of the future perspectives of this method in applied material science research, such as the merging of XFEM and artificial intelligence techniques.

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Section: Xfem and Bioinspired Materialsmentioning

confidence: 99%

XFEM for Composites, Biological, and Bioinspired Materials: A Review

Vellwock,

Libonati

2024

Materials

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“…Moreover, because of the technology, they result in low productivity (Raza et al, 2022) while they prove to be solid for low-cost end-use parts and small-lot production (Rouf et al, 2022). FDM printing processes have many fields of applications: biomedical (Frizziero et al, 2022a), tissue engineering, human bone repair (Alessandri et al, 2022;Alessandri et al, 2023), antibacterial, bioprinting (Chaturvedi et al, 2022), electrical conductivity (Mora et al, 2020), electromagnetic, sensor, battery, automotive (Romero et al, 2021;Frizziero et al, 2022b;Frizziero et al, 2022c;Frizziero et al, 2023), aviation, smart textile (Chakraborty and Biswas, 2020), environmental, and luminescence applications among other areas (Jandyal et al, 2022).…”

Section: Introduction To Fdm For the Realization Of Functional Partsmentioning

confidence: 99%

Design and development of a peristaltic pump for constant flow applications

Ferretti,

Pagliari,

Montalti

et al. 2023

Front. Mech. Eng.

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In wide-ranging areas, including hydraulics, biomedical, automotive, and aerospace, there is often a need to move a fluid with a constant flow rate. This is difficult to achieve with any type of pump and usually other elements are inserted to regularize the output. This study focused on the peristaltic pump because there are few studies on it and it has some interesting features, such as extreme simplicity, a small number of components, and the extreme compactness of the whole system. The first part of this study is focused on analyzing the classical geometry of the peristaltic pump to understand the origin of the discontinuity in the flow rate; the second part proposes a new geometry that mitigates the flow irregularity by more than 200%. In this way, it is possible to use it in all the sectors where a constant flow rate is required but where insulation between the fluid and the machine is required. Together with the flow study, an analysis of how the main geometric parameters affect the operation of the pump is provided, complete with explanatory graphs and tables. A prototype made through additive manufacturing technologies is also proposed.

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“…Moreover, in recent years, the attention of researchers has particularly focused on the influence that the geometric configuration of the envelope can have on its thermal performance. The structures that are inspired by the biomimicry concept have aroused particular interest [16][17][18][19][20]. Among these, for example, honeycomb structures have proven to be successful for thermal management applications, both as thermal barriers and as heat sinks [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The 3D Printing Potential for Heat Flow Optimization: Influence of Block Geometries on Heat Transfer Processes

et al. 2022

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The building envelope is a crucial element in the regulation of thermal energy in the indoor environment, from which comfortable living inevitably depends. Designing a low-dispersion envelope represents a fundamental strategy to minimize the energy demand and HVAC systems’ consumption. To this end, the need to select suitable insulation has become increasingly important, and the search for new solutions is constantly evolving. This justifies the great interest in the study of energy-efficient and sustainable insulation materials that are able to provide the low thermal transmittance values of multilayer components. To date, 3D printing has experienced a growing popularity for the research of alternative building materials (e.g., concrete). Conversely, it still appears to be very uncommon for the research of purely energy-efficient solutions. The aim of this work is to compare the thermal performance of three 3D-printed PLA (polylactic acid) blocks, characterized by different internal geometries and air cavities: (i) a multi-row structure; (ii) a square structure; (iii) a honeycomb structure. The study was conducted theoretically, with two-dimensional heat transfer modeling, and experimentally, by means of a heat flow meter and infrared thermography. The results showed that the configurations of the 3D-printed blocks reduced the flow of heat exchange. In addition, as the complexity of the blocks’ internal structure increased, a heat flow reduction could be observed. In particular, the honeycomb structure showed a better behavior than the other two blocks did, with an experimental transmittance value that was equal to 1.22 ± 0.04 W/m2K. This behavior, which was mainly due to an attenuation of convective and radiative internal heat exchanges, suggests that the 3D printing has great potential in this field.

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Biomimetics and 3D printing - Opportunities for design applications

Cited by 10 publications

References 48 publications

XFEM for Composites, Biological, and Bioinspired Materials: A Review

XFEM for Composites, Biological, and Bioinspired Materials: A Review

Design and development of a peristaltic pump for constant flow applications

The 3D Printing Potential for Heat Flow Optimization: Influence of Block Geometries on Heat Transfer Processes

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