Three-Dimensional Printing of Innovative Intramedullary Pin Profiles with Direct Metal Laser Sintering

Singh, Rupinder; Sidhu, J.; Rishab,; Pabla, B. S.; Kumar, Ashwani

doi:10.1007/s11665-021-06176-3

Cited by 40 publications

(16 citation statements)

References 25 publications

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“…In veterinary orthopedic applications, 3D printing of intramedullary pin (IMP) profiles with DMLS has been reported. 17 This study highlights the effect of thread profile on the improved holding of a pin in the proximal end. But the limitation is that in the case of metal 3D printing fabrication of thread profile is a big challenge, so designers are forced to use thermoplastic patterns.…”

Section: Introductionmentioning

confidence: 83%

On PVDF composite as partially absorbable smart implants

Husain

Singh

Pabla

2023

Proc Inst Mech Eng H

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For various orthopedic needs, several studies have been testified on non-absorbable implants, prepared with different metals/alloys, and composites. But yet little has been stated on the partially absorbable smart implants of thermoplastic composites for online health monitoring of veterinary patients. This article highlights the in-house development of affordable, polyvinylidene fluoride (PVDF) composite-based partially absorbable smart implants (with online sensing capability) for orthopedic needs in canines. Hydroxyapatite (HAp) and chitosan (CS) nanoparticles were reinforced in the PVDF matrix by a melt processing route with various weight proportions (wt.%) to fabricate a partially absorbable smart implant for the canine. The study suggests that the 8.0 wt.% HAp and 2.0 wt.% CS in PVDF is the superlative composition/proportion of reinforcement for preparing feedstock stock filaments (for 3D printing of partially absorbable smart implants), based on rheological, mechanical, thermal, dielectric, and voltage-current-resistance ( V- I- R) characteristics. For the selected composition/proportion of PVDF composite, acceptable mechanical properties (such as modulus of toughness (MoT) 2.0 MPa, Young’s modulus (E) 889 MPa), and dielectric properties (dielectric constant (ε r) 9.6 at room temperature (30°C) and 20 MHz) for online sensing capabilities (for health monitoring) was observed. The results are braced by attenuated total reflection Fourier transform infrared (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) analysis.

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Section: Introductionmentioning

confidence: 83%

On PVDF composite as partially absorbable smart implants

Husain

Singh

Pabla

2023

Proc Inst Mech Eng H

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“…8 The recommended default settings for 17-4 PH SS alloys by the manufacturer are LP 120 W, ScS 1200 mm/s, HD 50 µm, LT 30 µm, and the corresponding ED is 66.66 J/mm 3 . [9][10][11] For dual alloy printing, the ED 90.27 J/mm 3 (with LP 130 W, ScS 600 mm/s, HD 80 µm, LT 30 µm) was selected as an intermediate value for Ti-6Al-4V and 17-4PH SS alloys, which resulted in successful printing of specimen.…”

Section: Methodsmentioning

confidence: 99%

“…8 The 17-4 precipitate hardened (PH) SS also has good corrosion resistance and mechanical properties. 9–11 Some studies highlight that the functionally graded material (FGM) for biomedical scaffolds results in the optimized mechanical behavior of the structure and also helps in cell ingrowth. 12,13…”

Section: Introductionmentioning

confidence: 99%

“…8 The 17-4 precipitate hardened (PH) SS also has good corrosion resistance and mechanical properties. [9][10][11] Some studies highlight that the functionally graded material (FGM) for biomedical scaffolds results in the optimized mechanical behavior of the structure and also helps in cell ingrowth. 12,13 Some studies reported on the role of AM in advanced manufacturing practices have outlined the significance of DMLS printing parameters like LP, and energy density (ED) to localize the effect of heat input on Ti, SS, and Al alloys for controlling the porosity, print quality, microstructure, and mechanical properties of functional prototypes.…”

Section: Introductionmentioning

confidence: 99%

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On failure analysis of three-dimensional printed functionally graded material prepared by direct metal laser sintering

Singh

Khan

Pradhan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the past decade, some studies were reported on the successful three-dimensional printing of meta-structure-inspired functionally graded material with two different alloys (having a wide difference in melting range ≈ 450–500 °C) by direct metal laser sintering. But hitherto little has been reported on failure analysis of such meta-structure-inspired three-dimensional printed functional prototypes of dual alloys (17-4 precipitate hardened (PH) stainless steel (SS) and Ti-6Al-4V) with direct metal laser sintering (while fabrication). This study reports the failure analysis of meta-structure inspired dual alloys printing (as FGM) at different processing parameters of direct metal laser sintering. Initially, a pilot study was performed in which a solid structure of Ti-6Al-4V and 17-4 PH SS was successfully printed by selecting the suitable direct metal laser sintering process parameters as functionally graded material (stage 0). In the next stage, specimens of dual alloys were printed with dodecahedron and octet meta-structure of Ti-6Al-4V as a sandwich between the 17-4 PH SS and Ti-6Al-4V layers (stage 1). It has been observed that the octet-based specimen was successfully printed, while the dodecahedron-based sample failed after attaining some height. After successfully octet meta-structure printing of dual alloys (Ti-6Al-4V and 17-4 PH SS), direct metal laser sintering process parameters were further explored for optimization (stage 2). For failure analysis, the specimens with octet meta-structure were fabricated by fixing energy density (in stage 3), hatching distance (in stage 4), laser power (in stage 5), and energy density, hatching distance, laser power, scanning speed (in stage 6). Finally, for confirmation (stage 7), a single specimen was successfully printed by taking process parameters of the successful octet-based sample of stage 2. All the printing failures as per porosity analysis (such as balling phenomenon, caves, and cervices formation) concerning the number of sintered layers in this study are supported with photomicrographic analysis (based on scanning electron microscopy images).

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“…Biopolymers processed through FDM offer improved mechanical properties required for biomedical scaffolds (Tadeusiewicz, 2000). Materials such as poly-lactic acid (PLA) (Singh et al, 2022a(Singh et al, , 2022b(Singh et al, , 2022c, poly-caprolactone (Gardan, 2016), poly ether-ether ketone (Vaezi and Yang, 2015) and poly methyl-meth acrylate (Espalin et al, 2010) offer good biocompatibility as well as biodegradability and are found suitable for the medical domain. Polyvinylidene fluoride (PVDF), on the other hand, is a semicrystalline fluoropolymer that provides high tensile strength along with high impact toughness and is found suitable for sensing applications because of its piezoelectric behavior (Saxena and Shukla, 2021).…”

Section: Introductionmentioning

confidence: 99%

3D-printed conformal sensors for health monitoring of bovine post diaphragmatic hernia surgery: a review

Barwar,

Kala,

Singh

2024

RPJ

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Purpose Some studies have been reported in the past on diaphragmatic hernia (DH) surgery techniques using additive manufacturing (AM) technologies, symptoms of a hernia and post-surgery complications. But hitherto little has been reported on bibliographic analysis (BA) for health monitoring of bovine post-DH surgery for long-term management. Based on BA, this study aims to explore the sensor fabrication integrated with innovative AM technologies for health monitoring assistance of bovines post-DH surgery. Design/methodology/approach A BA based on the data extracted through the Web of Science database was performed using bibliometric tools (R-Studio and Biblioshiny). Findings After going through the BA and a case study, this review provides information on various 3D-printed meshes used over the sutured site and available Internet of Things-based solutions to prevent the recurrence of DH. Originality/value Research gaps exist for 3D-printed conformal sensors for health monitoring of bovine post-DH surgery.

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Three-Dimensional Printing of Innovative Intramedullary Pin Profiles with Direct Metal Laser Sintering

Cited by 40 publications

References 25 publications

On PVDF composite as partially absorbable smart implants

On PVDF composite as partially absorbable smart implants

On failure analysis of three-dimensional printed functionally graded material prepared by direct metal laser sintering

3D-printed conformal sensors for health monitoring of bovine post diaphragmatic hernia surgery: a review

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