Forming of Additively Manufactured Ceramics by Magnetic Fields

Abstract

The application of additive manufacturing using liquid material extrusion is inherently linked to material-related deformations and limitations in the choice of component geometry. This empirical study addresses the question of how the plasticity of a ceramic composite material can be utilized for a new integrated design and manufacturing process. In the exploratory approach, the liquid material is not limited in its soft plastic state, but its malleability is harnessed for a design-oriented approach. For this purpose, soft magnetic particles are added to a liquid clay mass. The developed composite material can be controlled, stabilized, and shaped by magnetic fields directly in the additive manufacturing process using modified equipment. In this study a permanent magnet and an electromagnet were compared while the distance between the printed part and the magnet was controlled by an optical sensor.

Fiber-Reinforced Clay: An Exploratory Study on Automated Thread Insertion for Enhanced Structural Integrity in LDM

“…The development of the custom-built module primarily hinged on two elements: (1) conceptualizing and creating designs using CAD and 3D modeling software (McNeel's Rhinoceros3d/Grasshopper, see Section 2.2.2) and (2) obtaining mechanical components while generating custom parts using a stereo-lithography (SLA) printer. Given that the module was custom-designed, specific components were not readily available for purchase, necessitating the production of custom parts.…”

“…Accordingly, these preliminary findings pointed towards the selection of hemp thread Nm 28/2 for further testing and studies within this research due to its successful bonding with both the liquid and dried clay, signifying its optimal suitability for this research context. * 1 The hemp thread of type Nm 28/2 was identified as the optimal choice, and as such, it has been employed in all subsequent investigations. * 2 The rating scale, from 1 (poor performance) to 5 (superior performance), is relative to the other samples among the threads tested.…”

“…Liquid deposition modeling (LDM) technology, a pioneering method for 3D printing with ceramics, is making significant strides across multiple engineering domains [1,2]. Clay, a natural and malleable material, serves as the base medium in LDM.…”