Effect of layer thickness on flexural properties of PLA (PolyLactid Acid) by 3D printing

Nugroho, Afid; Ardiansyah, R; Rusita, L; Larasati, I L

doi:10.1088/1742-6596/1130/1/012017

Cited by 53 publications

(38 citation statements)

References 14 publications

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“…~ 320 N). For instance, stainless steel has a yield strength of ~ 600 MPa [29] which is ~ 14 times that of PLA (~ 43 MPa) [20]. The use of the stainless steel, therefore, is expected to increase the load-bearing capacity of our split to ~ 4500 N.…”

Section: Discussion and Future Directionsmentioning

confidence: 99%

Spiky-joint: a bioinspired solution to combine mobility and support

2021

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Mobility and support are two structural properties that are often mutually exclusive. However, combining them could enhance the performance of mechanical components, and offer novel technical applications. Here through the implementation of a bioinspired interlocking mechanism in the design of a supportive, yet mobile, wrist splint, we tackled the conflicting combination of the two properties. We elaborated our design into a technology readiness level and, using 3D printing, directly converted it into a real-life application. In contrast to the existing splints, our bioinspired splint supports human wrist without impairing its movements. Hence, it can be used to prevent hyperextension injuries without hindering wrist function. By being interlocked at the maximum wrist extension, our splint could be an ideal wrist support for athletes, especially weightlifters. By restricting the wrist mobility, it could also be used as a support device to treat less severe medical issues, such as sprain, strain, or even for the recovery after cast removal, during which full immobilization may result in muscle atrophy. Our design strategy is purely structural; hence, it can be easily modified and implemented in other engineering applications. The simple, yet efficient, solution developed in this study offers a universal paradigm for developing engineering systems that pursuit both mobility and support. Graphic abstract

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Section: Discussion and Future Directionsmentioning

confidence: 99%

Spiky-joint: a bioinspired solution to combine mobility and support

2021

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“…The tensile test that was based on the ASTM D638 Standard [ 52 ] was performed to determine the tensile strength (TS), Young's modulus (E), and elongation at break (EB). Meanwhile, the flexural test was conducted based on the ASTM D790 Standard [ 53 ] to determine the flexural strength, flexural modulus, and elongation at break. As a control, a commercial miniplate, Inion® (Inion Oy, Tampere, Finland), was also tested under similar standards.…”

Section: Methodsmentioning

confidence: 99%

Tailoring mechanical properties and degradation rate of maxillofacial implant based on sago starch/polylactid acid blend

Whulanza

Azadi

Supriadi

et al. 2022

Heliyon

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Tailoring mechanical properties and degradation rate of maxillofacial implant based on Sago Starch/Polylactid Acid Blend, HELIYON, https://doi.org/10.1016/j.heliyon.2021.e08600. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…where P is the load; L is the span length; and b and h are the width and thickness of the specimen, respectively [33]. The calculation of Young's modulus was performed according to the linear bending beams theory relationship (Equation ( 2)):…”

Section: Mechanical Characterization Of the Printed Specimens 241 Thr...mentioning

confidence: 99%

Sandwich Multi-Material 3D-Printed Polymers: Influence of Aging on the Impact and Flexure Resistances

Pinho

Piedade

2021

Polymers

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With the advances in new materials, equipment, and processes, additive manufacturing (AM) has gained increased importance for producing the final parts that are used in several industrial areas, such as automotive, aeronautics, and health. The constant development of 3D-printing equipment allows for printing multi-material systems as sandwich specimens using, for example, double-nozzle configurations. The present study aimed to compare the mechanical behavior of multi-material specimens that were produced using a double-nozzle 3D printer. The materials that were included in this study were the copolymer acrylonitrile-butadiene-styrene (ABS), high-impact polystyrene (HIPS), poly(methyl methacrylate) (PMMA), and thermoplastic polyurethane (TPU). The configuration of the sandwich structures consisted of a core of TPU and the outer skins made of one of the other three materials. The mechanical behavior was evaluated through three-point bending (3PB) and transverse impact tests and compared with mono-material printed specimens. The effect of aging in artificial saliva was evaluated for all the processed materials. The main conclusion of this study was that the aging process did not significantly alter the mechanical properties for mono-materials, except for PMMA, where the maximum flexural stress decreased. In the sandwich structures, the TPU core had a softening effect, inducing a significant increase in the resilience and resistance to transverse impact. The obtained results are quite promising for applications in biomedical devices, such as protective mouthguards or teeth aligners. In these specific applications, the changes in the mechanical properties with time and with the contact of saliva assume particular importance.

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Effect of layer thickness on flexural properties of PLA (PolyLactid Acid) by 3D printing

Cited by 53 publications

References 14 publications

Spiky-joint: a bioinspired solution to combine mobility and support

Spiky-joint: a bioinspired solution to combine mobility and support

Tailoring mechanical properties and degradation rate of maxillofacial implant based on sago starch/polylactid acid blend

Sandwich Multi-Material 3D-Printed Polymers: Influence of Aging on the Impact and Flexure Resistances

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