Green ceramic machining: A top-down approach for the rapid fabrication of complex-shaped ceramics

Su, Bo; Dhara, Santanu; Wang, L

doi:10.1016/j.jeurceramsoc.2008.02.023

Cited by 67 publications

(35 citation statements)

References 27 publications

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“…With computer-based technology, intricately shaped parts are now available that previously were considered improbable. Subtractive manufacturing is remarkably flexible and ideal for short production runs and rapid-prototyping [631]. Nowadays, almost all ceramic orthopaedic implants are produced using this method, and it is also extensively used to produce custom dental implants [632].…”

Section: Manufacturing Processesmentioning

confidence: 99%

Ceramics and ceramic coatings in orthopaedics

McEntire

Bal

Rahaman

et al. 2015

Journal of the European Ceramic Society

176

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Section: Manufacturing Processesmentioning

confidence: 99%

Ceramics and ceramic coatings in orthopaedics

McEntire

Bal

Rahaman

et al. 2015

Journal of the European Ceramic Society

176

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“…The basic concept for machining ceramics while in the green body state is discussed by Su et al [17], but here it is applied to density evaluation, not shaping, finishing, or rapid prototyping. For a green body of compressed alumina powder, a CNC mill proved to be able to easily mill the body with sufficient precision.…”

Section: Presentation Of the Methodsmentioning

confidence: 99%

Application of tomographic reconstruction techniques for density analysis of green bodies

Swan

Bigoni

2017

Ceramics International

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Progress in the manufacturing of ceramics, but also of sintered metals, strongly relies on the evaluation of the density distribution in green bodies. This evaluation is crucial from many points of view, including the calibration of constitutive models for in-silico simulation of densification processes. To this end, X-ray tomography and other techniques are possible but can be unmanageable for some institutions. Therefore, a destructive method is introduced in the present article to measure the density field of a green body sample using a CNC mill, an analytical balance, and analysis techniques from the field of computational tomography. A virtual experiment is presented where the method is used to reconstruct a simulated green body density field and is found to satisfactorily correspond to the original solution. The green body density field of a truncated cylinder made of alumina powder is evaluated using this method and the reconstructed field is presented.

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“…Typically, green densities in excess of 50% were generally required to effectively achieve densification during firing. Green machining of the pressed blanks was subsequently performed using programmed CNC vertical machining or turning centers (OM1, VF2, and OL1, Haas Automation, Oxnard, CA, USA) [34]. Laser etching and engraving of the machined components were performed next using high-powered Nd-YAG equipment (FOBA G5 Laser Marker, Alltec GmbH, Selmsdorf, Germany).…”

Section: Manufacturing Processesmentioning

confidence: 99%