Mechanical properties of material jetted zirconia complex geometries with hot isostatic pressing

Mummareddy, Bhargavi; Negro, Dylan; Bharambe, Vivek T.; Oh, Yongduk; Burden, Edward; Ahlfors, Magnus; Choi, Jaewon; Plessis, Anton du; Adams, Jack A.; MacDonald, Eric; Cortes, Pedro

doi:10.1016/j.aime.2021.100052

Cited by 8 publications

(9 citation statements)

References 37 publications

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“…Similar concepts and ways of thinking has been championed by South African researchers and partnering institutions globally [2,51,123,[219][220][221][222][223][224][225][226][227][228][229][230][231][232]. Through these efforts more than a dozen publications have emanated focusing on extrusion-based 3D concrete structures [51,229,230,232], X-ray tomography [219,222,225-227, 233,234], biomimicry in additive manufacturing [51,222,223,231] and critical reviews of AM applications in various industries [2,224].…”

Section: Additive Manufacturing In Building and Constructionmentioning

confidence: 99%

“…The RAPDASA team also forge strong international collaboration with entities such as Global Alliance of Rapid Prototyping Associations (GARPA) [25,33]. These activities are augmented by universities and research councils across South Africa [2,51,123,[219][220][221][222][223][224][225][226][227][228][229][230][231][232][263][264][265][266]. These institutions have additive manufacturing research groupings with medium to highend 3D printers for polymers and metals.…”

Section: Additive Manufacturing Awareness In South Africamentioning

confidence: 99%

“…The rest of the African continent has much to learn from South Africa especially in areas of AM research [2,51,123,[219][220][221][222][223][224][225][226][227][228][229][230][231][232]244,269,270]. The increasing funding programs through the Collaborative Program in Additive Manufacturing is commendable and a case in point.…”

Section: Additive Manufacturing Awareness In South Africamentioning

confidence: 99%

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Global perspective and African outlook on additive manufacturing research − an overview

et al. 2022

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Additive manufacturing (AM) technologies and advances made globally in medicine, construction, aerospace, and energy sectors are discussed. The paper further explores the current state of AM innovation and development landscape in Africa as a late comer to this area of smart manufacturing. Peer-reviewed and published literature were retrieved from Scopus database from 2005 to 2021 and analysed. In Africa, out of 500 published articles, South Africa has the highest research throughput, whereas about two-thirds of the continent is not actively participating in this burgeoning field. The main AM techniques most widely used are selective laser melting, fused deposition modelling, and direct energy deposition. Globally, there is an interplay of computational (machine learning and mechanistic models) and experimental approaches to understanding the physical metallurgy of AM techniques and processes. Though this trend is consistent with global practices, Africa lags the world in AM technologies, a niche that could leapfrog the manufacturing sector. Thus, Africa need to foster collaborative partnership within and globally to become an active global player in this industry.

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Section: Additive Manufacturing In Building and Constructionmentioning

confidence: 99%

Section: Additive Manufacturing Awareness In South Africamentioning

confidence: 99%

Section: Additive Manufacturing Awareness In South Africamentioning

confidence: 99%

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Global perspective and African outlook on additive manufacturing research − an overview

et al. 2022

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“…The margin area of aMJ FDPs shows a higher deviation because the thin restoration margins tended to break during the support removal in water, leading to higher negative deviations. It has been reported that it is possible to acquire highly accurate designs using the XJET printer, but that the printing of complex designs with fine features, like a thin restoration margin, are still challenging due to the support removal [16,58].…”

Section: Subtractive Vs Additive Manufacturing Technologies In Relati...mentioning

confidence: 99%

Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing

et al. 2022

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“…This approach involves the dispersion of nanoparticles of either metal or ceramic suspended in a liquid solution. With the resolution of ink jetting (20 µm after sintering and shrinkage), intricately-detailed geometries have been fabricated with a layer thickness of about 10 µm [32]. A thermal post-processing sintering stage (typically 1450 • C for 40-60 hours) is required for the nano-sized particles to reach nearly-full density as a structure [32].…”

Section: A Materials Jetting Processmentioning

confidence: 99%

High-Temperature Additively Manufactured C-Band Antennas Using Material Jetting of Zirconia and Micro-Dispending of Platinum Paste

Mejias-Morillo

Shivakumar

et al. 2022

IEEE Open J. Antennas Propag.

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Additive manufacturing (AM) enables the development of rapid, low-cost prototypes for adhoc and on-demand manufacturing to repair and keep up the continuous operation of systems, especially in time-sensitive scenarios where the system recovery cannot wait for the shipment of new components. Therefore, the industry, military, and academia continue to invest in these technologies to potentially achieve novel 3D geometries based on high-temperature dielectric and conductors to endure harsh environments, such as commonly found in the oil and gas, defense, and aerospace sectors. This paper reports the electromagnetic properties of 3D-printed Yttria-Stabilized Zirconia (YSZ) for 2-6 GHz and the DC and RF effective conductivity of sintered platinum ink, where the dissipative losses of the additively manufactured coplanar waveguides (CPWs) are less than 0.05 dB/mm when the frequency is below 4 GHz. In addition, the AM CPWs are exposed to thermal cycling up to 600 • C to study the material's thermal fatigue and potential degradation. However, the samples do not exhibit appreciable degradation after thermal cycling. Also, a two-layer back-fed antenna based on 3D-printed YSZ and platinum ink is designed, manufactured, and tested. Results show a measured gain of 2.5 dBi and a front-back ratio of 9.6 dB at 4.1 GHz.

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Mechanical properties of material jetted zirconia complex geometries with hot isostatic pressing

Cited by 8 publications

References 37 publications

Global perspective and African outlook on additive manufacturing research − an overview

Global perspective and African outlook on additive manufacturing research − an overview

Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing

High-Temperature Additively Manufactured C-Band Antennas Using Material Jetting of Zirconia and Micro-Dispending of Platinum Paste

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